U.S. patent application number 13/819548 was filed with the patent office on 2013-06-27 for fastener stringer and slide fastener.
This patent application is currently assigned to YKK Corporation. The applicant listed for this patent is Takayuki Aiko, Takahiro Asami, Yoshito Ikeguchi, Hiroyuki Konokawa, Akira Takano. Invention is credited to Takayuki Aiko, Takahiro Asami, Yoshito Ikeguchi, Hiroyuki Konokawa, Akira Takano.
Application Number | 20130160249 13/819548 |
Document ID | / |
Family ID | 45831306 |
Filed Date | 2013-06-27 |
United States Patent
Application |
20130160249 |
Kind Code |
A1 |
Aiko; Takayuki ; et
al. |
June 27, 2013 |
Fastener Stringer and Slide Fastener
Abstract
For this fastener stringer, at least two stitching lines
configured of stitching thread are disposed along the longitudinal
direction of a tape on one surface side of the fastener elements.
Each of the stitching lines has a stitch at least every two pitches
of the fastener elements in the longitudinal direction of the tape
and the stitches of each line are disposed so as to deviate from
the stitches of the adjacent line, by at least one pitch of the
fastener elements in the longitudinal direction of the tape. The
fastener stringer thereby has superior fastener element dimensional
precision, stitch line abrasion resistance, and flexibility. The
multiple stitch lines can be made to look like a tape fabric to be
inconspicuous. Moreover, in producing the fastener stringer, a
stitching process of the fastener element can be performed
efficiently and stably.
Inventors: |
Aiko; Takayuki; (Toyama,
JP) ; Konokawa; Hiroyuki; (Toyama, JP) ;
Asami; Takahiro; (Toyama, JP) ; Takano; Akira;
(Toyama, JP) ; Ikeguchi; Yoshito; (Toyama,
JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Aiko; Takayuki
Konokawa; Hiroyuki
Asami; Takahiro
Takano; Akira
Ikeguchi; Yoshito |
Toyama
Toyama
Toyama
Toyama
Toyama |
|
JP
JP
JP
JP
JP |
|
|
Assignee: |
YKK Corporation
Tokyo
JP
|
Family ID: |
45831306 |
Appl. No.: |
13/819548 |
Filed: |
May 16, 2011 |
PCT Filed: |
May 16, 2011 |
PCT NO: |
PCT/JP2011/061157 |
371 Date: |
February 27, 2013 |
Current U.S.
Class: |
24/395 |
Current CPC
Class: |
A44B 19/406 20130101;
Y10T 24/2525 20150115 |
Class at
Publication: |
24/395 |
International
Class: |
A44B 19/40 20060101
A44B019/40 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 17, 2010 |
JP |
PCT/JP2010/066223 |
Claims
1. A fastener stringer for a slide fastener in which a fastener
element having a continuity shape is sealed along a tape-side edge
of a fastener tape by a stitching thread, wherein: at least two
rows of stitching lines constituted by the stitching thread are
disposed on one surface side of the fastener element in the
longitudinal direction of a tape, the stitching lines has stitches
in which the stitching thread stitches the fastener tape at least
every two pitches of the fastener element in the longitudinal
direction of the tape, respectively, and the stitches formed on the
respective rows are disposed to deviate from each other in the
longitudinal direction of the tape for at least one pitch of the
fastener element between the adjacent rows.
2. The fastener stringer according to claim 1, wherein: the
stitching line includes a first stitching line and a second
stitching line that are disposed in parallel in the longitudinal
direction of the tape, the first stitching line and the second
stitching line are disposed on one surface side of the fastener
element sequentially from a coupling head side of the fastener
element, the stitches formed on the respective rows are disposed
every two pitches of the fastener element, respectively, and the
stitch of the first stitching line is disposed to deviate from the
stitch of the second stitching line by one pitch of the fastener
element in the longitudinal direction of the tape.
3. The fastener stringer according to claim 1, wherein: the
stitching line includes a first stitching line, a second stitching
line, and a third stitching line that are disposed in parallel in
the longitudinal direction of the tape, the first stitching line,
the second stitching line, and the third stitching line are
disposed on one surface side of the fastener element sequentially
from the coupling head side of the fastener element, the stitches
formed on the respective rows are disposed every two pitches of the
fastener element, respectively, and the stitch of the second
stitching line is disposed to deviate from the stitch of the first
stitching line and the stitch of the third stitching line by one
pitch of the fastener element in the longitudinal direction of the
tape.
4. The fastener stringer according to claim 1, wherein: the
stitching line includes a first stitching line, a second stitching
line, and a third stitching line that are disposed in parallel in
the longitudinal direction of the tape, the first stitching line,
the second stitching line, and the third stitching line are
disposed on one surface side of the fastener element sequentially
from the coupling head side of the fastener element, the stitches
formed on the respective rows are disposed every three pitches of
the fastener element, respectively, the stitch of the second
stitching line is disposed to deviate from the stitch of the first
stitching line by one pitch or two pitches of the fastener element
at one side in the longitudinal direction of the tape, and the
stitch of the third stitching line is disposed to deviate from the
stitch of the second stitching line by one pitch of the fastener
element in the longitudinal direction of the tape and disposed to
deviate from the stitch of the first stitching line by two pitches
or one pitch of the fastener element at one side in the
longitudinal direction of the tape.
5. The fastener stringer according to claim 1, wherein: one of the
stitches is disposed between the adjacent fastener elements.
6. The fastener stringer according to claim 1, wherein: the number
of the stitching threads pressing an upper leg of each of the
fastener elements is larger than that of the stitching threads
shown on the other surface side of the fastener tape.
7. The fastener stringer according to claim 1, wherein: each of the
stitching lines is configured by a dual circular rod of the
stitching thread.
8. The fastener stringer according to claim 1, wherein: colors
colored to the respective stitching threads are differently
combined in the stitching lines which are adjacent to each
other.
9. The fastener stringer according to claim 8, wherein: colors
respectively colored to a needle thread and a looper thread
constituting each of the stitching threads are differently
combined.
10. The fastener stringer according to claim 1, wherein: the colors
colored to the respective stitching threads are the same as each
other in the stitching lines which are adjacent to each other.
11. The fastener stringer according to claim 8, wherein: the color
colored to the stitching thread and the color colored to the
fastener tape are differently combined.
12. A slide fastener, wherein: a pair of fastener stringers
according to claim 1 is provided at left and right sides thereof.
Description
TECHNICAL FIELD
[0001] The invention relates to a fastener stringer in which a
continuity-shaped fastener element is sealed along a tape-side edge
of a fastener tape by a stitching thread and a slide fastener
having a pair of the fastener stringers at left and right sides
thereof.
BACKGROUND ART
[0002] A fastener stringer for a slide fastener is configured in
such a manner that fastener elements are attached to a woven or
knitted narrow fastener tape to form an element row. Further, in
general, as one of the fastener elements forming the element row, a
continuity-shaped fastener element acquired by forming a
monofilament in a coil shape or a zigzag shape has been known.
[0003] For example, a fastener element which is formed in a coil
shape generally has a coupling head, a pair of upper and lower legs
that extend in a tape width direction from the coupling head, and a
connecting portion (may be called an inverting portion) connecting
an upper leg and a lower leg between adjacent fastener elements in
the longitudinal direction of the tape. As such, the
continuity-shaped fastener element is configured.
[0004] In the coil-shaped fastener element, the upper and lower
legs are stitched along a tape-side edge of the fastener tape by a
dual circular rod of a stitching thread while a core thread is
inserted between the upper and lower legs.
[0005] The stitching thread used to stitch the upper and lower legs
to the fastener tape includes a looper thread configured to press
the upper and lower legs of each of the fastener elements from a
surface side (a top side of the upper leg) and a needle thread
disposed on a rear surface side of the fastener tape, and
configured to stitch the fastener tape every pitch of the fastener
element and interlace with the looper thread. The fastener elements
are stitched to the fastener tape by the stitching thread, and as a
result, one row of stitching lines configured by the stitching
thread is formed along the longitudinal direction of the tape on
the surface of the fastener element.
[0006] Further, for example, Japanese Patent Application Laid-Open
No. 51-90645 (Patent Document 1) discloses a fastener stringer 60
illustrated in FIG. 12. In the fastener stringer 60 of Patent
Document 1, a fastener element 61 is stitched to a fastener tape 63
by two rows of stitching lines 64 in order to stably stitch a
coil-shaped fastener element 61 to the fastener tape 63 by a
stitching thread 62. A slide fastener is configured by using a pair
of fastener stringers 60 configured as above.
[0007] In addition, the stitching lines 64 configuring each row are
respectively configured by a dual circular rod of the stitching
thread 62. A needle thread of the stitching thread 62 is interlaced
with a looper thread of the stitching thread 62 while forming a
stitch 65 by stitching the fastener tape 63 every pitch of the
fastener element 61, in order to solidly seal the fastener element
61.
[0008] Thus the coil-shaped fastener element 61 is sealed to the
fastener tape 63 by the two rows of the stitching lines 64, and as
a result, the position of the fastener element 61 is difficult to
deviate in the longitudinal direction of the tape, thereby
increasing dimensional precision of the fastener element 61.
[0009] Further, in the fastener stringer 60, since the two rows of
the stitching lines 64 are formed on the surface of the fastener
element 61, when the slide fastener is configured by using the
fastener stringer 60, the stitching thread 62 contacting a slider
is difficult to cut although the slider is repeatedly slid, and as
a result, abrasion resistance of the stitching line 64 can be
improved.
PRIOR ART DOCUMENT
Patent Document
[0010] Patent Document 1: Japanese Patent Application Laid-Open No.
51-90645
SUMMARY OF THE INVENTION
Problems to be Solved by the Invention
[0011] There are many cases in which the coil-shaped fastener
element is generally appropriately used for a slide fastener which
needs flexibility. However, in the configuration of the fastener
stringer 60 disclosed in Patent Document 1, the stitches 65
respectively formed on two rows of stitching lines 64 are formed
every one pitch of the fastener element 61 in the longitudinal
direction of the tape of the fastener tape 63.
[0012] Thus two rows of stitching lines 64 are used to seal the
fastener element 61 to the fastener tape 63 and moreover, the
stitch 65 formed on each of the rows is configured in such a manner
that the stitching thread 62 is stitched to the fastener tape 63
every one pitch in the longitudinal direction of the tape. As a
result, the density of the stitching thread 62 to the fastener
element 61 is consequently increased, and thus the flexibility of
the fastener stringer 60 may deteriorate.
[0013] Further, when the fastener elements 61 are sealed by two
rows of stitching lines 64 as disclosed in Patent Document 1,
stitching needs to be performed by making two sewing needles
disposed in parallel in forming the two rows of stitching lines 64,
respectively to penetrate the fastener tape 63. In addition, two
swing needles penetrate the fastener tape 63 every one pitch of the
fastener element 61.
[0014] However, for example, when the size of the fastener element
61 is small, in the stitching process, it is difficult that two
sewing needles penetrate the tape in parallel in the width
direction of the tape between the respective fastener elements 61
and in some cases, the sewing needles interfere with each other to
cause the sewing needles to be damaged.
[0015] Further, in general, in order to achieve high efficiency of
the stitching process in manufacturing the fastener stringer, a
stitching speed when the fastener element is stitched to the
fastener tape is required to be as high as possible. However, like
the fastener stringer 60 of Patent Document 1, when stitching is
performed by making two sewing needles to penetrate the fastener
tape 63 every one pitch of the fastener element 61, the
transportation amount of the sewing machine is limited to the size
of one pitch of the fastener element 61. As a result, in
manufacturing the fastener stringer 60 of Patent Document 1, there
is a limit to increase the stitching speed to stitch the fastener
element 61, and as a result, it was difficult to achieve advanced
efficiency of the stitching process.
[0016] Further, in the fastener stringer 60 of Patent Document 1,
two rows of stitching lines 64 are formed on the surface of the
fastener element 61 and further, the stitch 65 of each of the
stitching lines 64 is disposed every one pitch of the fastener
element 61. As a result, two rows of stitching lines 64 may be
convex or look convex on the fastener element 61 depending on the
thickness or material of the stitching thread 62.
[0017] In addition, when the slider slides to the convex portion,
there is a case in which sliding resistance of the slider is large.
Further, when the stitching line 64 is not convex on the fastener
element 61, but two rows of stitching lines 64 look convex on the
fastener element 61, there was a case in which the fastener element
61 or the stitching line 64 damages designs of, for example,
clothes or bags at the time of attaching the slide fastener having
the fastener stringer 60 to the clothes or the bags.
[0018] The invention has been made by considering the problems in
the related art and a detailed object of the invention is to
provide a fastener stringer in which dimensional precision of the
fastener element, abrasion resistance of the stitching line, and
flexibility are excellent, which can prevent the stitching line
from being convex or looking convex, improve designability of the
fastener stringer, and stitch the fastener element efficiently and
stably within a short time, and a slide fastener having the
fastener stringer.
Means for Solving the Problems
[0019] In order to achieve the object, in a fastener stringer for a
slide fastener provided by the invention in which a fastener
element having a continuity shape is sealed along a tape-side edge
of a fastener tape by a stitching thread,
[0020] at least two rows of stitching lines constituted by the
stitching thread are disposed on one surface side of the fastener
element in the longitudinal direction of a tape, and the stitching
lines have stitches in which the stitching thread stitches the
fastener tape at least every two pitches of the fastener element in
the longitudinal direction of the tape, respectively, and
[0021] the stitches formed on the respective rows are disposed to
deviate from each other in the longitudinal direction of the tape
for at least one pitch of the fastener element between the adjacent
rows.
[0022] In the fastener stringer according to the invention, the
stitching line includes a first stitching line and a second
stitching line that are disposed in parallel in the longitudinal
direction of the tape, and the first stitching line and the second
stitching line are disposed on one surface side of the fastener
element sequentially from the coupling head side of the fastener
element, and
[0023] the stitches formed on the respective rows are disposed
every two pitches of the fastener element, respectively, and the
stitch of the first stitching line is disposed to deviate from the
stitch of the second stitching line by one pitch of the fastener
element in the longitudinal direction of the tape.
[0024] Further, in the fastener stringer according to the
invention, the stitching line includes a first stitching line, a
second stitching line, and a third stitching line that are disposed
in parallel in the longitudinal direction of the tape and the first
stitching line, the second stitching line, and the third stitching
line are disposed on one surface side of the fastener element
sequentially from a coupling head side of the fastener element,
and
[0025] the stitches formed on the respective rows are disposed
every two pitches of the fastener element, respectively, and the
stitch of the second stitching line may be disposed to deviate from
the stitch of the first stitching line and the stitch of the third
stitching line by one pitch of the fastener element in the
longitudinal direction of the tape.
[0026] Further, in the fastener stringer according to the
invention, the stitching line includes the first stitching line,
the second stitching line, and the third stitching line that are
disposed in parallel in the longitudinal direction of the tape, and
the first stitching line, the second stitching line, and the third
stitching line are disposed on one surface side of the fastener
element sequentially from the coupling head side of the fastener
element, and
[0027] the stitches formed on the respective rows are disposed
every three pitches of the fastener element, respectively, the
stitch of the second stitching line is disposed to deviate from the
stitch of the first stitching line by one pitch or two pitches of
the fastener element at one side in the longitudinal direction of
the tape, and the stitch of the third stitching line may be
disposed to deviate from the stitch of the second stitching line by
one pitch of the fastener element in the longitudinal direction of
the tape and disposed to deviate from the stitch of the first
stitching line by two pitches or one pitch of the fastener element
at one side in the longitudinal direction of the tape.
[0028] Further, in the fastener stringer according to the
invention, one of the stitches is preferably disposed between the
adjacent fastener elements.
[0029] In addition, in the fastener stringer according to the
invention, the number of the stitching threads pressing an upper
leg of each of the fastener elements is preferably larger than that
of the stitching threads shown on the other surface side of the
fastener tape, and particularly, each of the stitching lines is
preferably configured by a dual circular rod of the stitching
thread.
[0030] Further, in the fastener stringer according to the
invention, colors colored to the respective stitching threads are
preferably differently combined in stitching lines which are
adjacent to each other. In particular, colors respectively colored
to a needle thread and a looper thread constituting each of the
stitching threads are preferably differently combined.
[0031] In addition, in the fastener stringer according to the
invention, the colors colored to the respective stitching threads
are preferably the same as each other in the stitching lines which
are adjacent to each other. Further, the color colored to the
stitching thread and the color colored to the fastener tape are
preferably differently combined.
[0032] Further, according to the invention, there is provided a
slide fastener having a pair of fastener stringers having the above
configuration at left and right sides thereof.
Effect of the Invention
[0033] In the fastener stringer according to the invention, at
least two rows of stitching lines that seal the fastener element to
the fastener tape are disposed on one surface side of the fastener
element in the longitudinal direction of the tape. As a result, the
fastener element does not easily deviate in the longitudinal
direction of the tape, and as a result, the dimensional precision
of the fastener element can be increased.
[0034] Further, since two or more rows of stitching lines in the
longitudinal direction of the tape are disposed on the fastener
element, the stitching thread contacting the slider is not easily
cut although the slider is repeatedly slid when the slide fastener
is configured by using the fastener stringer, and as a result,
abrasion resistance of the stitching line can be improved.
[0035] Further, the stitch that stitches the fastener tape is
disposed at least every two pitches of the fastener element
throughout the longitudinal direction of the tape in each of the
stitching lines of the fastener stringer. As a result, like, for
example, the fastener stringer of Patent Document 1, the density of
the stitching thread for the fastener element can be configured to
be lower and flexibility of the fastener stringer can be increased
as compared with the case in which the stitch is disposed every one
pitch of the fastener element.
[0036] Further, in the fastener stringer of the invention, since
the stitch is disposed every two pitches of the fastener element,
the transportation amount of the sewing machine can be set to a
large value in the stitching process of manufacturing the fastener
stringer. In addition, since the transportation amount of the
sewing machine can be set to the large value, the stitching speed
can be increased and the fastener element can be stitched
efficiently within a short time.
[0037] Furthermore, in the fastener stringer, the stitch of each
row formed by each of the stitching lines is disposed to deviate in
the longitudinal direction of the tape for at least one pitch of
the fastener element between adjacent rows.
[0038] As a result, although the stitch of each row is disposed at
least every two pitches of the fastener element, the fastener
element can be substantially sealed to the fastener tape by each of
the stitching lines. Further, when the fastener element is
stitched, the sewing needle that forms each of the stitching lines
can be disposed to deviate in the longitudinal direction of the
tape. As a result, for example, even when the size of the fastener
element is small, adjacent sewing needles can be prevented from
interfering with each other and the fastener element can be
stitched smoothly and stably without damaging the sewing
needle.
[0039] Further, since the stitches formed on the respective
stitching lines are disposed alternately in the longitudinal
direction of the tape between the adjacent stitching lines, a
plurality of stitching lines disposed on the fastener element is
made to look like a tape fabric such as the fastener tape to be
less conspicuous. In particular, in the invention, the stitches
formed on the stitching lines of the respective rows are installed
at an interval of a size more than two pitches of the fastener
element in the longitudinal direction of the tape.
[0040] Thus in the invention, since a span can be lengthened
between the adjacent stitches in each of the stitching lines, each
of the stitching lines can be prevented from being convex on the
fastener element or looking like a convex state. As a result, the
stitching line can be made to be more inconspicuous and a new
appearance different from the related art can be given to the
fastener stringer of the invention. Further, since each stitching
line is not convex on the fastener element, a sliding resistance of
the slider can be reduced.
[0041] As a first aspect in the fastener stringer of the invention,
a first stitching line and a second stitching line which are
disposed in parallel in the longitudinal direction of the tape can
be provided as a stitching line. In addition, the first stitching
line and the second stitching line are disposed on one surface side
of the fastener element in this order from the coupling head side
of the fastener element. Further, the stitches disposed on the
stitching lines of the respective rows are disposed every two
pitches of the fastener element throughout the longitudinal
direction of the tape and further, the stitch of the first
stitching line is disposed to deviate from the stitch of the second
stitching line by one pitch of the fastener element in the
longitudinal direction of the tape.
[0042] In the fastener stringer according to the first aspect
configured as above, the position of the fastener element cannot
easily deviate in the longitudinal direction of the tape, and
abrasion resistance of the first stitching line and the second
stitching line can be excellent. Further, the stitches of the
respective stitching lines throughout the longitudinal direction of
the tape are disposed every two pitches of the fastener element. In
addition, since the stitch of the first stitching line and the
stitch of the second stitching line are disposed alternately
throughout the longitudinal direction of the tape, the sewing
needle that forms the first stitching line and the sewing needle
that forms the second stitching line can be disposed to deviate in
the longitudinal direction of the tape.
[0043] As a result, in manufacturing the fastener stringer, the
fastener element can be stitched efficiently and stably within a
short time. Further, the first stitching line and the second
stitching line may be made to look like the tape fabric to be
inconspicuous. Further, the flexibility of the fastener stringer
can be easily secured.
[0044] As a second aspect in the fastener stringer of the
invention, a first stitching line, a second stitching line, and a
third stitching line which are disposed in parallel in the
longitudinal direction of the tape can be provided as the stitching
line. In addition, the first stitching line, the second stitching
line, and the third stitching line are disposed on one surface side
of the fastener element in this order from the coupling head side
of the fastener element.
[0045] Further, the stitches of the respective stitching lines
throughout the longitudinal direction of the tape are disposed
every two pitches of the fastener element. Further, the stitch of
the second stitching line is disposed to deviate from the stitch of
the first stitching line and the stitch of the third stitching line
by one pitch of the fastener element in the longitudinal direction
of the tape.
[0046] In the fastener stringer according to the second aspect
configured as above, the position of the fastener element does not
easily deviate in the longitudinal direction of the tape and
further, the abrasion resistance of each of the stitching lines is
very excellent. Further, the stitches of the respective stitching
lines are disposed every two pitches of the fastener element,
respectively. In addition, the respective stitches are disposed
alternately in the longitudinal direction of the tape between the
second stitching line, and the first stitching line and the third
stitching line.
[0047] As a result, the sewing needle that forms the second
stitching line, and the sewing needle that forms the first
stitching line and the sewing needle that forms the third stitching
line can be disposed to deviate from each other in the longitudinal
direction of the tape. Further, the sewing needle that forms the
first stitching line and the sewing needle that forms the third
stitching line can be disposed to be spaced apart from each other
by the width of the second stitching line or more in the width
direction of the tape. By this configuration, in manufacturing the
fastener stringer, the fastener element can be stitched efficiently
and stably within a short time.
[0048] Further, in the fastener stringer according to the second
aspect, since three rows of stitching lines in the longitudinal
direction of the tape are disposed on one surface side of the
fastener element, the fastener element is concealed by the
stitching lines to be inconspicuous from the outside. In addition,
the first stitching line to the third stitching line exposed onto
the fastener element are made to further look like the tape fabric
to be further inconspicuous.
[0049] By configuring the slide fastener by using the fastener
stringer, the slide fastener can be appropriately used for the
clothes, the bags, and the like which are excellent in design.
[0050] As a third aspect in the fastener stringer of the invention,
as the stitching line, a first stitching line, a second stitching
line, and a third stitching line which are disposed in parallel in
the longitudinal direction of the tape can be provided. In
addition, the first stitching line, the second stitching line, and
the third stitching line are disposed on one surface side of the
fastener element in this order from the coupling head side of the
fastener element.
[0051] Further, the stitches of the respective stitching lines
throughout the longitudinal direction of the tape are disposed
every three pitches of the fastener element, respectively. Further,
the stitch of the second stitching line is disposed to deviate from
the stitch of the first stitching line at one side in the
longitudinal direction of the tape by one pitch or two pitches of
the fastener element. Further, the stitch of the third stitching
line is disposed to deviate from the stitch of the second stitching
line in the longitudinal direction of the tape by one pitch of the
fastener element and further, disposed to deviate from the stitch
of the first stitching line at one side in the longitudinal
direction of the tape by two pitches or one pitch of the fastener
element.
[0052] In the fastener stringer according to the third aspect
configured as above, the position of the fastener element does not
easily deviate in the longitudinal direction of the tape and
further, three stitching lines can be used as the stitching line,
and thus the stitching line which is very excellent in abrasion
resistance can be configured.
[0053] Further, the sewing needle that forms the third stitching
line from the sewing needle that forms the first stitching line can
be disposed to deviate from each other in the longitudinal
direction of the tape and further, the sewing needle that forms the
first stitching line and the sewing needle that forms the third
stitching line can be disposed to be spaced apart from each other
by the width of the second stitching line or more in the width
direction of the tape.
[0054] By this configuration, in manufacturing the fastener
stringer, the fastener element can be stitched efficiently and
stably within a short time. Further, the flexibility of the
fastener stringer can be easily secured.
[0055] Further, in the fastener stringer according to the third
aspect, since three rows of stitching lines in the longitudinal
direction of the tape are disposed on one surface side of the
fastener element, the fastener element can be concealed by the
stitching lines to be inconspicuous from the outside. In addition,
the first stitching line to the third stitching line exposed onto
the fastener element is made to look like the tape fabric to be
further inconspicuous.
[0056] Further, in the fastener stringer of the invention, at least
one stitch of any one stitching line is disposed between the
fastener elements adjacent to each other throughout the
longitudinal direction of the tape. Although two or more rows of
stitching lines are disposed on one surface side of the fastener
element as described above, at least one stitch is disposed between
the fastener elements adjacent to each other throughout the
longitudinal direction of the tape. By this configuration, in the
stitching process of the fastener element, a plurality of sewing
needles that form two rows or more of stitching lines, respectively
is disposed so as not to interfere with each other and the
stitching processing can be easily and efficiently performed.
[0057] In addition, in the fastener stringer of the invention, the
number of stitching threads that press one surface side of each
fastener element is larger than the number of stitching threads
shown on the other surface side of the fastener tape. As a result,
the abrasion resistance of each of the stitching lines disposed on
one surface side of the fastener element is further improved and it
is possible to make the fastener element be inconspicuous by the
stitching line.
[0058] Furthermore, in the fastener stringer of the invention, of
the stitching lines is configured by the dual circular rod of the
stitching thread. As a result, the fastener element can be
substantially sealed to the fastener tape.
[0059] Further, in the fastener stringer of the invention, the
colors colored to the respective stitching threads are differently
combined from each other in the adjacent stitching lines. By this
configuration, instead of making the stitching line be
inconspicuous, the stitching line can be made to be conspicuous and
designability in the fastener stringer can be remarkably improved.
In addition, a design of the clothes, the bags, and the like
mounted with the slide fastener using the fastener stringer can be
made to stand out.
[0060] In addition, the colored color has been described, but
transparency or translucency is included as one kind of the colored
color, in the invention.
[0061] Further, for example, when the stitching lines are
configured by three rows, all of the colors of the respective rows
may be combined to be different from each other. In addition, the
colors are combined so that only a color of a row disposed at the
center is different from colors of the remaining rows, that is,
color combination can be determined by considering designability,
and the like. In addition, even when the stitching lines are
configured in four rows or more, the combination of the respective
colors between the respective rows may be determined by considering
the designability, and the like.
[0062] Further, in the fastener stringer of the invention, the
colors respectively colored to the needle thread and the looper
thread constituting each of the stitching threads are differently
combined. By this configuration, the stitches with which the needle
thread and the looper thread are interlaced can serve as charming
points. In addition, variation when a design of the clothes or the
bags mounted with the slide fastener using the fastener stringer is
made to stand out can be richened.
[0063] Furthermore, in the fastener stringer of the invention, the
colors colored to the respective stitching threads are configured
to be the same as each other in the adjacent stitching lines. In
this case, when the color colored to each of the stitching threads
is transparent, the color of the core thread inserted into the
fastener element is made to be conspicuous and when the color
colored to each of the stitching threads is not transparent, it may
look as if one tape were provided by a plurality of stitching
lines.
[0064] Further, when the color colored to each of the stitching
threads is transparent, the color of the core thread inserted into
the fastener element and the color of the fastener tape may be
appropriately combined with each other. When the fastener elements
are directly sealed to the fastener tape to constitute the element
row, the color of the fastener tape can be made to be conspicuous
through each transparent stitching thread. Thus designability by
the color of the core thread and the color of the fastener tape can
be improved.
[0065] Further, in the fastener stringer of the invention, the
color colored to the stitching thread and the color colored to the
fastener tape are differently combined. By this configuration,
designability in the fastener stringer can be remarkably improved.
In addition, a design of the clothes, the bags, and the like
mounted with the slide fastener using the fastener stringer can be
made to be conspicuous.
[0066] In addition, in the slide fastener of the invention, which
has a pair of fastener stringers having the above configuration, at
the left and right sides thereof, the left and right fastener
elements are sealed to the fastener tape by two rows or more of
stitching lines, respectively and the stitches formed on the
respective stitching lines are disposed at least every two pitches
of the fastener element. By this configuration, the slide fastener
in which the dimensional precision of the fastener element, the
abrasion resistance of the stitching line, and flexibility are
excellent can be provided.
[0067] Further, in the slide fastener of the invention, since the
stitch formed on each of the rows is disposed to deviate from the
stitch of the row adjacent thereto by at least one pitch of the
fastener element in the longitudinal direction of the tape, the
plurality of stitching lines is made to be look like the tape
fabric to be inconspicuous. In addition, on the contrary, by
changing the color colored to the stitching thread or the fastener
tape, the stitching thread or the fastener tape is easily
conspicuous, and as a result, designability can be excellent. Thus
the slide fastener can be appropriately used for the clothes, the
bags, and the like which are excellent in design.
BRIEF DESCRIPTION OF THE DRAWINGS
[0068] FIG. 1 is a front view illustrating a slide fastener having
a fastener stringer according to a first embodiment of the
invention.
[0069] FIG. 2 is an enlarged front view illustrating a part of the
fastener stringer.
[0070] FIG. 3 is a cross-sectional view of line illustrated in FIG.
2.
[0071] FIG. 4 is a cross-sectional view illustrating a stitch type
of a stitching thread in the fastener stringer.
[0072] FIG. 5 is a cross-sectional view of a slide fastener having
a fastener stringer according to a modified example of the first
embodiment.
[0073] FIG. 6 is an enlarged front view illustrating a part of a
fastener stringer according to a second embodiment of the
invention.
[0074] FIG. 7 is an enlarged front view illustrating a part of a
fastener stringer according to a third embodiment of the
invention.
[0075] FIG. 8 is a front view illustrating primary parts when the
fastener stringer according to the first embodiment of the
invention is configured by using a colored stitching thread.
[0076] FIG. 9 is a bottom view of the fastener stringer illustrated
in FIG. 8.
[0077] FIG. 10 is a front view illustrating a state in which a pair
of fastener stringers illustrated in FIG. 8 is used and fastener
elements which face each other are coupled with each other.
[0078] FIG. 11 is a front view illustrating a state in which a pair
of fastener stringers using stitching threads colored with
different colors is used and the fastener elements which face each
other are coupled with each other.
[0079] FIG. 12 is a front view illustrating a slide fastener in the
related art.
MODE FOR CARRYING OUT THE INVENTION
[0080] Hereinafter, appropriate embodiments of the invention will
be described in detail with reference to the accompanying drawings
by using embodiments. Further, the invention is not particularly
limited to each embodiment to be described below and only if the
substantially the same configuration is provided and the same
operational effect is shown, various changes can be made.
[0081] For example, in embodiments described below, a fastener
stringer in which fastener elements which are continuous in a coil
shape are sealed along a tape-side edge of a fastener tape to form
an element row will be described. However, the invention is not
limited to this configuration and when the fastener elements are
configured in the continuity shape, the invention may have, for
example, a configuration in which zigzag-shaped fastener elements
are sealed to the tape-side edge of the fastener tape to form the
element row.
[0082] Further, in the embodiments described below, a stitching
line configured to seal the fastener elements to the fastener tape
is configured by a dual circular rod of a stitching thread, but the
stitching line in the invention may be configured by other stitch
types such as a single circular rod, and the like.
First Embodiment
[0083] FIG. 1 is a front view illustrating a slide fastener having
a fastener stringer according to a first embodiment. Further, FIG.
2 is an enlarged front view illustrating a part of the fastener
stringer and FIG. 3 is a cross-sectional view taken along line
illustrated in FIG. 2. In addition, FIG. 4 is a cross-sectional
view illustrating the stitch type of the stitching thread in the
fastener stringer.
[0084] Further, in a description below, an anteroposterior
direction represents the longitudinal direction of the fastener
tape and is the same direction as a sliding direction in which a
slider slides, and in FIG. 1, an upper side to a plane of paper is
set as a front side and a lower side is set as a rear side. In
addition, a horizontal direction represents the tape width
direction of the fastener tape and represents a direction which is
parallel to a tape surface of the fastener tape and orthogonal to
the longitudinal direction of the tape. Furthermore, a vertical
direction represents a tape two-face direction orthogonal to the
tape surface of the fastener tape and in particular, a direction of
a side where the fastener elements are attached to the fastener
tape is defined as an upper side and a direction opposite thereto
is defined as a lower side.
[0085] In a fastener stringer 10 according to the first embodiment,
two fastener stringers 10 are used as one group to configure a
standard type slide fastener 1 as illustrated in FIG. 1. In this
case, the slide fastener 1 includes a pair of left and right
fastener stringers 10 according to the first embodiment, an upper
stopper 6 fixed to one end of an element row 21 of the fastener
stringer 10, a lower stopper 7 fixed to the other end of the
element row 21 of the fastener stringer 10, and a slider 8 slidably
attached along the element row 21.
[0086] Further, the slide fastener 1 is configured by sliding the
slider 8 toward the upper stopper 6 side to close the slide
fastener 1 by engaging the left and right element rows 21 and
further, sliding the slider 8 toward the lower stopper 7 side to
open the slide fastener 1 by separating the left and right element
rows 21. In addition, the upper stopper 6, the lower stopper 7, and
the slider 8 in the slide fastener 1 are configured similarly as
those generally used in the related art.
[0087] Further, one fastener stringer 10 is bent on the way and
ends of the fastener stringers 10 face each other, and as a result,
the element rows may be configured to face up to bent portions. In
this configuration, the upper stopper 6 illustrated in FIG. 1 is
not used.
[0088] The fastener stringer 10 according to the first embodiment
configuring the slide fastener 1 includes a fastener tape 20 woven
in a narrow shape and an element row 21 disposed along a tape-side
edge 20b of the fastener tape 20. The element row 21 is configured
in such a manner that fastener elements 22 which are continuous in
the coil shape are sealed to the fastener tape 20 by using a
stitching thread 11 while a core thread 27 is inserted in upper and
lower legs 24 and 25, as described below. Further, in the
invention, the element row may also be configured by sealing the
fastener element 22 to the fastener tape 20 without the core thread
27.
[0089] The fastener tape 20 of the first embodiment includes a tape
main body portion 20a which becomes a portion stitched to a
fastener attached product such as a cloth or a bag and a tape-side
edge 20b (may be called an element attachment portion) disposed at
one edge of the tape main body portion 20a and attached with the
fastener element 22.
[0090] Further, the fastener tape 20 of the first embodiment is
configured by weaving, but the configuration of the fastener tape
20 is not particularly limited in the invention and for example,
materials and thicknesses of warp threads and weft threads forming
the fastener tape 20 may be arbitrarily set. In addition, the
fastener tape may be configured by knitting structure.
[0091] The fastener element 22 of the first embodiment has the
continuous coil shape and is formed by forming a swollen-shaped
coupling head 23 by pressing a monofilament made of a synthetic
resin such as polyamide or polyester at a predetermined interval
and thereafter, winding the coupling head 23 in the coil shape.
[0092] Further, the fastener element 22 has the coupling head 23
formed to protrude in an anteroposterior direction (the
longitudinal direction of the fastener tape), a pair of upper and
lower legs 24 and 25 that extend in the width direction of the tape
from the coupling head 23, and a connecting portion 26 connecting
the upper leg 24 and the lower leg 25 between the fastener elements
22 adjacent in the longitudinal direction of the tape. In this
case, a dimension between a center line in the longitudinal
direction of the fastener tape 20 in one coupling head 23 and a
center line in the longitudinal direction of the fastener tape 20
in a coupling head 23 adjacent to the corresponding coupling head
23 is defined as a size for one pitch of the fastener element
22.
[0093] In the first embodiment, the coil-shaped fastener element 22
is disposed such that the coupling head 23 protrudes from a side
edge of the fastener tape 20 while the core thread 27 is inserted
between the upper and the lower legs 24 and 25, and the fastener
element 22 is stitched to the tape-side edge 20b of the fastener
tape 20 by the stitching thread 11. Two rows of stitching lines 12
of a first stitching line 12a disposed at the coupling head 23 side
and a second stitching line 12b disposed at the connecting portion
26 side are formed in the longitudinal direction of the tape on the
top of the upper leg 24 in the fastener element 22.
[0094] Further, as illustrated in FIGS. 2 and 3, each of the first
stitching line 12a and the second stitching line 12b is configured
by the dual circular rod of the stitching thread 11. The stitching
thread 11 of each of the rows includes a needle thread 11a stitched
to a tape part between the fastener elements 22 to form a stitch 13
while traveling on an undersurface side of the tape of the fastener
tape 20 and a looper thread lib pressing a top of the fastener
element 22 by traveling on the upper leg 24 side of the fastener
element 22 while being interlaced with the needle thread 11a by the
stitch 13.
[0095] In this case, as illustrated in FIG. 3, in a horizontal
cross-section of the fastener stringer 10, the number of the needle
threads 11a disposed on the tape undersurface side of the fastener
tape 20 is one, while the number of the looper threads 11b disposed
on the top of the fastener element 22 is three, on the stitching
line 12 of each of the rows. That is, the number of the looper
threads 11b disposed on the top of the fastener element 22 is
larger than the number of the needle threads 11a disposed on the
tape undersurface side of the fastener tape 20.
[0096] Further, in the first embodiment, the stitch 13 formed in
each of the first stitching line 12a and the second stitching line
12b is disposed every two pitches of the fastener element 22 in the
longitudinal direction of the tape and the looper thread 11b of
each of the first stitching line 12a and the second stitching line
12b is interlaced with the needle thread 11a throughout the upper
and lower legs 24 and 25 of the two fastener elements 22.
[0097] As a result, two upper legs 24 and two lower legs 25 are
disposed between the stitches 13 of the first stitching line 12a as
illustrated in FIG. 4 and further, two upper legs 24 and two lower
legs 25 are similarly disposed between the stitches 13 of the
second stitching line 12b. Further, a size for one pitch of the
fastener element 22 is the same as a dimension between center lines
in the longitudinal direction of the tape in two upper legs 24
which are adjacent to each other and the stitches 13 are disposed
every two pitches of the fastener element 22 throughout the
longitudinal direction of the tape.
[0098] Further, in this case, as illustrated in FIG. 2, the
position of the stitch 13 on the first stitching line 12a is
installed to deviate in the longitudinal direction of the tape by
the size for one pitch of the fastener element 22 with respect to
the position of the stitch 13 on the second stitching line 12b. In
addition, the stitch 13 formed on the first stitching line 12a and
the stitch 13 formed on the second stitching line 12b are
alternately disposed by each one between the respective fastener
elements 22 when seen in the longitudinal direction of the tape.
That is, the stitch 13 is certainly formed between the fastener
elements 22 which are adjacent to each other.
[0099] Subsequently, a method of manufacturing the fastener
stringer 10 according to the first embodiment will be
described.
[0100] First, the fastener tape 20 is prepared. A carrier bar
reciprocates in an opening of the warp thread by using, for
example, a weaving machine to insert the weft thread, and as a
result, the fastener tape 20 is woven by desired weaving.
[0101] Continuously, a stitching process of sealing the coil-shaped
fastener element 22 by the dual circular rod of the stitching
thread 11 is performed along the tape-side edge 20b of the woven
fastener tape 20 by using a sewing machine. In the stitching
process of the first embodiment, while two sheets of fastener tapes
20 are arranged in parallel in the width direction of the tape to
be supplied to a stitching unit of the sewing machine, two
coil-shaped fastener elements 22 respectively sealed to the
fastener tapes 20 are supplied to the stitching unit of the sewing
machine together with the fastener tape 20 with two coil-shaped
fastener elements 22 coupled with each other. In addition, in the
corresponding stitching unit, the fastener elements 22 are
respectively stitched to the left and right fastener tapes 20 by
the stitching thread 11 as it is while two fastener elements 22 are
coupled with each other.
[0102] In this case, the stitching unit of the sewing machine used
in stitching includes two sewing needles that stitch one fastener
element 22 by two rows of first and second stitching lines 12a and
12b and two sewing needles that stitch the other fastener element
22 by two rows of first and second stitching lines 12a and 12b.
Stitching processing performed with respect to one fastener element
22 and stitching processing performed with respect to the other
fastener element 22 are symmetrically performed at the same time.
Further, hereinafter, in order to avoid a rambling description,
stitching processing performed with respect to one fastener element
22 will be described in detail.
[0103] The stitching unit of the sewing machine has two sewing
needles that stitch one fastener element 22 by two rows of first
and second stitching lines 12a and 12b as described above, and the
two sewing needles are disposed at an upstream side or a downstream
side in a transportation direction of the fastener tape 20 to
deviate from each other with the size for one pitch of the fastener
element 22.
[0104] Therefore, in the corresponding stitching unit, two sewing
needles which deviate from each other in the longitudinal direction
of the tape may vertically reciprocate at the same time with
respect to the fastener tape 20 and the coil-shaped fastener
element 22 which are supplied. In addition, the fastener tape 20 to
which the fastener element 22 is stitched is intermittently
transported downstream in accordance with reciprocation of the two
sewing needles, and as a result, the fastener element 22 is
stitched by the dual circular rod by two rows of stitching threads
11.
[0105] In this case, in the first embodiment, since two sewing
needles are disposed to deviate from each other in the
transportation direction, the stitch 13 formed on the first
stitching line 12a and the stitch 13 formed on the second stitching
line 12b may be disposed to significantly deviate from each other
in the longitudinal direction of the tape with the size for one
pitch of the fastener element 22.
[0106] Further, in the first embodiment, for example, even when the
size of the fastener element 22 is small, since two sewing needles
are disposed to deviate from each other in the longitudinal
direction of the tape, two sewing needles may be prevented from
interfering with each other at the time of stitching the fastener
element 22 to the fastener tape 20. By this configuration,
stitching the fastener element 22 may be performed smoothly and
stably and further, efficiently in a short time while the stitches
13 respectively formed on the first stitching line 12a and the
second stitching line 12b are alternately formed in the
longitudinal direction of the tape without damaging the sewing
needle.
[0107] In addition, in the first embodiment, in the stitching
processing of the fastener element 22, since the stitch 13 of each
of the stitching lines 12 is formed every two pitches of the
fastener element 22, the fastener tape 20 and the fastener element
22 may be sent downstream with a transportation amount for two
pitches of the fastener element 22 with respect to one-time
reciprocation of the sewing needle.
[0108] As a result, in the first embodiment, a stitching speed may
be increased by configuring a transportation amount of the sewing
machine more largely than the case in which the stitch 13 of the
stitching thread 11 is formed every pitch of the fastener element
22 like, for example, the fastener stringer 10 (see FIG. 12) of
Patent Document 1. As a result, the stitching process of the
fastener element 22 may be efficiently performed within a short
time.
[0109] By performing the above stitching process, the fastener
element 22 having a predetermined length is sealed along the
tape-side edge 20b of the fastener tape 20 by two rows of stitching
lines 12 by the dual circular rod of the stitching thread 11. In
addition, the fastener stringer 10 of the first embodiment may be
manufactured.
[0110] In the fastener stringer 10 of the first embodiment
manufactured as above, the fastener element 22 is stitched to the
fastener tape 20 by two rows of stitching lines 12 by the first
stitching line 12a and the second stitching line 12b. Further, the
respective stitches 13 in the first stitching line 12a and the
second stitching line 12b are alternately disposed every pitch of
the fastener element 22 throughout the longitudinal direction of
the tape. That is, the stitch 13 is certainly formed between the
fastener elements 22 which are adjacent to each other.
[0111] As a result, the fastener element 22 may be stably fixed so
as not to deviate from a predetermined position by the first
stitching line 12a and the second stitching line 12b, and
dimensional precision of the fastener element 22 may be
increased.
[0112] Further, the rows of the first stitching line 12a and the
second stitching line 12b are arranged in parallel, and as a
result, even when such a slide fastener 1 illustrated in FIG. 1 is
configured by using the fastener stringer 10, friction force with
the slider 8 is scattered to the first stitching line 12a and the
second stitching line 12b although the slider 8 is repeatedly slid.
As a result, although the stitching thread 11 of each of the rows
contacts the slider 8, the stitching thread 11 is difficult to cut,
thereby improving abrasion resistance of the stitching line 12.
[0113] In addition, in the fastener stringer 10 of the first
embodiment, although the fastener element 22 is sealed by two rows
of first stitching line 12a and second stitching line 12b, the
stitch 13 of each of the stitching lines 12 is disposed every two
pitches of the fastener element 22, thereby easily securing
flexibility in the fastener stringer 10.
[0114] Furthermore, in the fastener stringer 10, the stitch 13 of
the first stitching line 12a and the stitch 13 of the second
stitching line 12b are disposed to deviate from each other so that
forming positions of the stitches 13 are alternately formed. By
this configuration, a plurality of stitching lines 12 themselves
disposed on the fastener element 22 may be made to look like tape
fabric such as the fastener tape 20, and the like as compared with,
for example, the configuration in which the stitches of two rows of
stitching lines are arranged between the respective fastener
elements like the slide fastener of Patent Document 1.
[0115] As a result, for example, by matching a color of the
fastener tape 20 in the fastener stringer 10 and a color of the
stitching thread 11 in the first stitching line 12a and the second
stitching line 12b, it is possible to make the first stitching line
12a and the second stitching line 12b to be inconspicuous. Further,
in the invention, the respective colors of the fastener tape 20,
the fastener element 22, and the stitching thread 11 in the
stitching line 12 may be arbitrarily selected or changed.
[0116] That is, as illustrated in FIG. 8, colors colored to the
stitching threads 11 in the first stitching line 12a and the second
stitching line 12b in the fastener stringer 10 may be different
from each other. In this case, the colors colored to the respective
stitching threads 11 in the first stitching line 12a and the second
stitching line 12b, and the color colored to the fastener tape 20
may be different from each other. Further, in this case, the
fastener element 22 may be made of a transparent or
semi-transparent material or may also be colored with arbitrary
colors.
[0117] In addition, as illustrated in FIG. 9 which is a back view
of the fastener stringer 10 illustrated in FIG. 8, when even the
needle thread 11a is colored, a color of the needle thread 11a is
configured as a color with which a rear surface of the fastener
tape 20 is painted. As colors colored to the needle thread 11a and
the looper thread 11b constituting one stitching line 12, the
needle thread 11a and the looper thread 11b may be colored with the
same color or different colors.
[0118] By making the color colored to the needle thread 11a and the
color colored to the looper thread lib different, the color colored
to the needle thread 11a may be expressed to an interlacing portion
of the needle thread 11a and the looper thread 11b like a point at
the stitch 13 on the stitching line 12. In addition, a peculiar
color may be expressed as a color with respect to the stitching
line 12. Further, the color colored to the needle thread 11a and
the color colored to the fastener tape 20 may be configured by the
same color or different colors.
[0119] When the color colored to the needle thread 11a and the
color colored to the fastener tape 20 are the same as each other,
the needle thread 11a may be made to be inconspicuous. Further,
when the color colored to the needle thread 11a and the color
colored to the fastener tape 20 are different from each other, a
color may be given to even the rear surface side of the fastener
tape 20.
[0120] As the stitching thread 11, a dyed thread may be used.
Further, as threads (weaving thread and knitting thread)
constituting the fastener tape 20, dyed threads may be used
similarly as the stitching thread 11. The dyed thread may be
configured by dyeing a thread before stitching, weaving, or
knitting. Alternatively, the dyed thread may be made by mixing a
pigment with the thread.
[0121] When the color is colored to the fastener element 22,
coloring may be performed by dyeing the fastener element itself or
adding the pigment to the material configuring the fastener element
22 before stitching the fastener element 22 to the fastener tape
20.
[0122] FIG. 10 illustrates a state in which the fastener elements
22 of each of the fastener stringers 10 are coupled with each other
by using a pair of left and right fastener stringers 10 illustrated
in FIG. 8. While the fastener elements 22 are coupled with each
other, the first stitching lines 12a in a pair of left and right
fastener stringers 10 are disposed in the same color and the second
stitching lines 12b are disposed in the same color which is a color
different from the color of the first stitching lines 12a.
[0123] FIG. 11 illustrates a state in which the fastener elements
22 of each of the fastener stringers 10 are coupled with each other
by using a pair of left and right fastener stringers 10. The color
in the stitching line 12 disposed in the left fastener stringer 10
in FIG. 11 and the color in the stitching line 12 disposed in the
right fastener stringer 10 in FIG. 11 are different from each
other.
[0124] That is, the color of the first stitching line 12a and the
color of the second stitching line 12b in the stitching line 12
disposed in the left fastener stringer 10 in the figure are the
same as each other. Further, the color of the stitching line 12
disposed in the right fastener stringer 10 in the figure is
configured to be different from the color of the stitching line 12
disposed in the left fastener stringer 10 and further, the color of
the first stitching line 12a and the color of the second stitching
line 12b in the stitching line 12 disposed in the right fastener
stringer 10 are the same as each other. In addition, in this case,
the fastener elements 22 may be colored in the same color or in
different colors between the left and right fastener stringers
10.
[0125] In FIGS. 8 to 11, a configuration in which two rows of
stitching lines 12 are formed in the fastener stringer 10 is
described, but the stitching threads 11 of all of the stitching
lines 12 may be colored so that the colors in the stitching threads
11 are combined appropriately even with respect to a case in which
three or more rows of stitching lines 12 are formed in the fastener
stringer 10. Further, expression called coloring in this
application includes transparency and semi-transparency other than
the color and coloring in the invention.
[0126] Further, a combination of the colors in the stitching
threads 11 of all of the stitching lines 12, a combination of the
colors of the fastener tapes 20, a combination of the colors of the
fastener elements 22, and a color colored to the upper stopper 6
(see FIG. 1), a color colored to the lower stopper 7, and a
combination of the colors may be configured as an appropriate
combination by considering a design property or designability.
[0127] In addition, the slider 8 (see FIG. 1) may be configured by
the same color as the stitching thread 11 or configured by a color
different from the stitching thread 11. As coloring to the slider
8, an appropriate coloring method such as coloring by painting or a
configuration by a resin material added with the pigment may be
adopted.
[0128] When the core thread 27 (see FIG. 3) is inserted into the
fastener element 22, the core thread 27 may be configured by the
same color as the stitching thread 11 or configured by the same
color as the fastener tape 20. Further, the color of the core
thread 27 may be configured by the same color as the fastener
element 22.
[0129] The core thread 27 may be visually seen from the outside
when the stitching line 12 is transparent or semi-transparent, but
it is generally difficult to see the core thread 27 from the
outside. As a result, by considering an aspect of a manufacturing
cost, the core thread 27 may be configured by a color different
from the color of the stitching thread 11, for example, a white
color.
[0130] Further, although the white color is exemplified as the
color different from the color of the stitching thread 11, the
white color is not limited as the color colored to the core thread
27 and as necessary, the white color may be used as the color in
the fastener element 22, the fastener tape 20, or the stitching
thread 11.
[0131] In addition, the upper stopper 6 or the lower stopper 7 (see
FIG. 1) may be transparent, or may be colored by the same color as
the stitching thread 11 or by a different color from the stitching
thread 11. Even as coloring to the upper stopper 6 and the lower
stopper 7, an appropriate coloring method may be adopted similarly
as above.
[0132] In the first embodiment, the fastener stringer 10 used in
the standard type slide fastener 1 has been described as above, but
in the invention, the type of the slide fastener is not
particularly limited and for example, the invention may also be
appropriately applied to a fastener stringer for a concealed slide
fastener.
[0133] Herein, the concealed slide fastener which is a modified
example of the first embodiment will be described in detail with
reference to FIG. 5. A concealed slide fastener 1a is configured by
a pair of left and right fastener stringers 10a according to the
modified example of the first embodiment. Further, the concealed
slide fastener 1a has even the upper stopper, the lower stopper,
and the slider (not illustrated) which are generally used in the
related art.
[0134] The fastener stringers 10a constituting the concealed slide
fastener 1a have a fastener tape 30 and the element rows 21
disposed along a tape-side edge 30c of the fastener tape 30. The
element row 21 is configured by sealing the fastener element 22
which is continuous in the coil shape to the fastener tape 30 by
the dual circular rod by two rows of stitching threads 11.
[0135] In this case, the fastener tape 30 includes a tape main body
portion 30a, a tape bending portion 30b that is extended from one
periphery of the tape main body portion 30a and bent in a U shape,
and a tape-side edge 30c further extended from the tape bending
portion 30b, to which the fastener element 22 is sealed. Further,
the fastener tape 30 is configured in such a manner that the
concealed slide fastener 1a is configured and the tape bending
portions 30b of the left and right fastener tapes 30 thus contact
each other when the left and right element rows 21 are coupled to
each other.
[0136] Further, the coil-shaped fastener element 22 in the modified
example is configured in the same form as the case of the first
embodiment described above and includes the coupling head 23, the
upper and lower legs 24 and 25, and the connecting portion 26.
However, in the modified example which is the concealed slide
fastener 1a, a direction of the fastener element 22 sealed to the
fastener tape 30 is different from that of the first embodiment
described above.
[0137] That is, in the modified example, when the fastener element
22 is stitched, the core thread 27 is inserted between the upper
and lower legs 24 and 25 of the fastener element 22 before the
fastener tape 30 is bent. In addition, the upper and lower legs 24
and 25 are stitched to the tape-side edge 30c of the fastener tape
30 by two rows of stitching lines with the coupling head 23 facing
the tape main body portion 30a side of the fastener tape 30. Two
rows of stitching lines are formed by the dual circular rods of the
stitching threads 11, respectively.
[0138] In this case, two rows of stitching lines 12 of a first
stitching line 12a disposed at the coupling head 23 side and a
second stitching line 12b disposed at the connecting portion 26
side are formed on the top of the fastener element 22 in the
longitudinal direction of the tape. The first stitching line 12a
and the second stitching line 12b are configured similarly as the
case of the first embodiment described above.
[0139] Further, after the fastener element 22 is sealed to the
fastener tape 30, the fastener tape 30 is bent in the U shape by
the tape bending portion 30b. In addition, the bent fastener tape
30 is thermally set. As a result, the fastener stringer 10a is
acquired in which the coupling head 23 of the fastener element 22
protrudes outward from the tape bending portion 30b of the fastener
tape 30.
[0140] By combining two fastener stringers 10a acquired as above as
one group, the concealed slide fastener 1a is configured. By
sliding a slider (not illustrated), the coupling heads 23 of the
left and right fastener elements 22 may be appropriately coupled
with each other.
[0141] Further, in the concealed slide fastener 1a, when the left
and right element rows 21 are coupled with each other, the tape
bending portions 30b of the left and right fastener tapes 30 may be
closely attached to each other. Since the concealed slide fastener
1a is configured as above, the left and right element rows 21 which
are coupled with each other may be concealed by the fastener tape
30 (particularly, the tape bending portion 30b) when the slide
fastener 1a is viewed from the tape main body portion 30a side of
the fastener tape 30.
[0142] In addition, the concealed slide fastener 1a may be attached
and used to the fastener attached product such as the clothes or
the bag, for example, so that the fastener element 22 is disposed
on an outer surface side (a side exposed to the outside) of the
slide fastener 1a.
[0143] In the fastener stringer 10a according to the modified
example, the dimensional precision of the fastener element 22 or
the abrasion resistance of the stitching line 12 is excellent and
flexibility may be easily secured, similarly as the first
embodiment described above. Further, even when the concealed slide
fastener 1a is used, for example, so that the left and right
fastener elements 22 are disposed on the outer surface side, the
first stitching line 12a and the second stitching line 12b are made
to look like the tape fabric to be inconspicuous.
[0144] Further, as the configuration colored to the stitching line
12, and the like, is described by using FIGS. 8 to 11, the
concealed slide fastener 1a may be configured so that the color of
the stitching thread 11 constituting the first stitching line 12a
and the second stitching line 12b, the color of the fastener tape
20, the color of the fastener element 22, and the color of the core
thread 27 are appropriately combined with each other.
[0145] Thus by considering the color in the stitching line 12, and
the like, designability for the concealed slide fastener la may be
improved. In addition, when the concealed slide fastener 1a is
opened, a preening degree on a rear surface side of the clothes,
the bag, and the like on which the concealed slide fastener 1a is
mounted may be significantly increased.
Second Embodiment
[0146] FIG. 6 is an enlarged front view illustrating a part of a
fastener stringer according to a second embodiment.
[0147] Further, in a fastener stringer 40 according to the second
embodiment, the number of stitching lines 42 that seals the
fastener element 22 to the fastener tape 20 is set to three. The
fastener stringer 10 according to the second embodiment is
different from the configuration of the fastener stringer 40
according to the first embodiment in view of the configuration in
which the number of stitching lines 42 is three.
[0148] The fastener tape 20 and the fastener element 22 are
configured similarly as the first embodiment. Therefore, the same
members and parts in the second embodiment and a third embodiment
to be described below as the first embodiment described above are
represented by the same reference numerals, and as a result, a
description thereof will be omitted.
[0149] The fastener stringer 40 according to the second embodiment
includes a fastener tape 20 and an element row 21 disposed along a
tape-side edge 20b of the fastener tape 20. Further, the element
row 21 is configured in such a manner that fastener elements 22
which are continuous in the coil shape are sealed to the fastener
tape 20 by using a stitching thread 41 while a core thread 27 is
inserted in upper and lower legs 24 and 25.
[0150] On the top of the fastener element 22, three rows of
stitching lines 42 of a first stitching line 42a disposed on the
coupling head 23 side, a second stitching line 42b disposed to be
adjacent to the first stitching line 42a in the width direction of
the tape, and a third stitching line 42c adjacent to the second
stitching line 42b and disposed at a connecting portion 26 side are
formed in the longitudinal direction of the tape.
[0151] In this case, the first stitching line 42a to the third
stitching line 42c are configured by the dual circular rods by the
stitching thread 41. The stitching thread 41 of each row
constituting the first stitching line 42a to the third stitching
line 42c includes a needle thread stitched to a tape part between
the fastener elements 22 to form a stitch 43 while traveling on an
undersurface side of the tape of the fastener tape 20 and a looper
thread pressing a top of the fastener element 22 by traveling on
the upper leg 24 side of the fastener element 22 while being
interlaced with the needle thread by the stitch 43.
[0152] In particular, in the second embodiment, the stitches 43
formed on the respective rows of the first stitching line 42a to
the third stitching line 42c are disposed every two pitches of the
fastener element 22. The stitch 43 on the first stitching line 42a
and the stitch 43 on the third stitching line 42c are disposed in a
region of the same tape part between the same fastener elements 22
in the longitudinal direction of the tape.
[0153] Further, a forming position of the stitch 43 on the second
stitching line 42b is disposed to deviate from forming positions of
the stitches 43 on the first stitching line 42a and the third
stitching line 42c by one pitch of the fastener element 22 in the
longitudinal direction of the tape.
[0154] Accordingly, the forming positions of the stitches 43 on the
first stitching line 42a and the third stitching line 42c, and the
forming position of the stitch 43 on the second stitching line 42b
are disposed to deviate from each other by one pitch of each of the
fastener elements 22 in the longitudinal direction of the tape.
That is, the stitch 13 is certainly formed between the fastener
elements 22 which are adjacent to each other.
[0155] When the fastener stringer 40 according to the second
embodiment, which has the above configuration, is manufactured, the
coil-shaped fastener element 22 is sealed to the fastener tape 20
while a pair of left and right coil-shaped fastener elements 22 are
coupled to each other by using the sewing machine similarly as the
first embodiment described above.
[0156] In this case, in the second embodiment, three sewing needles
are provided in the stitching unit of the sewing machine in order
to seal one fastener element 22 to one fastener tape 20 (that is, a
total of six sewing needles in three at each of left and right
sides are provided in the stitching unit of the sewing machine in
order to stitch two coil-shaped fastener elements 22 which are
coupled to each other).
[0157] Further, in three sewing needles that seal one coil-shaped
fastener element 22 provided in the stitching unit of the sewing
machine, the position of a sewing needle that forms the second
stitching line 42b deviates from an upstream side or a downstream
side in the transportation direction of the fastener tape 20 with
respect to the position of the sewing needles that form the first
stitching line 42a and the third stitching line 42c,
respectively.
[0158] As a result, in the second embodiment, the stitch 43 of the
second stitching line 42b formed by stitching the fastener element
22 may be disposed to surely deviate from the stitches 43 of the
first stitching line 42a and the third stitching line 42c in the
longitudinal direction of the tape by the size for one pitch of the
fastener element 22 as described above. Further, the sewing needle
that forms the first stitching line 42a and the sewing needle that
forms the third stitching line 42c are disposed to be spaced apart
from each other by the width of the second stitching line 42b.
[0159] By the above configuration, the sewing needle that forms the
second stitching line 42b, and the sewing needles that form the
first stitching line 42a and the third stitching line 42c may
reciprocate vertically without interfering with each other. In
addition, the fastener element 22 may be smoothly and stably sealed
to the fastener tape 20 without damaging each of the sewing
needles.
[0160] Further, in the second embodiment, since the fastener tape
20 and the fastener element 22 may be transported to the downstream
side by a transportation amount for two pitches of the fastener
element 22 by one-time reciprocation of the sewing needle, in the
stitching processing of the fastener element 22 similarly as the
first embodiment described above, the stitching process of the
fastener element 22 may be performed efficiently within a short
time.
[0161] Further, in the fastener stringer 40 according to the second
embodiment, which is manufactured by performing the aforementioned
stitching process, the fastener element 22 is substantially
stitched to the fastener tape 20 by the first stitching line 42a to
the third stitching line 42c. In addition, the stitch 43 formed on
the second stitching line 42b, and the stitches 43 formed on the
first stitching line 42a and the third stitching line 42c are
disposed alternately every pitch of the fastener element 22, in
stitching the fastener element 22. That is, the stitch 13 is
certainly formed between the fastener elements 22 which are
adjacent to each other.
[0162] By the above configuration, the fastener element 22 may be
stably fixed so as not to deviate from a predetermined position and
the dimensional precision of the fastener element 22 may be
increased. Further, flexibility in the fastener stringer 40 may be
appropriately secured. In addition, in the fastener stringer 40,
since the first stitching line 42a to the third stitching line 42c
are disposed in parallel, the stitching thread 41 of each of the
rows is difficult to cut although a slider (not illustrated) slides
on the stitching line 42, and as a result, the abrasion resistance
of the stitching line 42 may be improved.
[0163] Further, in the fastener stringer 40 according to the second
embodiment, three rows of stitching lines 42 are disposed on the
fastener element 22, and the positions of the stitches 43 deviate
from each other in such a manner that the stitch 43 formed on the
second stitching line 42b, and the stitches 43 formed on the first
stitching line 42a and the third stitching line 42c, respectively
are disposed to deviate from each other.
[0164] As a result, since the first stitching line 42a to the third
stitching line 42c may be made to look like a tape fabric having a
larger width than that of the first embodiment described above, it
is difficult to see the fastener element 22 from the outside by
concealing the fastener element 22 with the first stitching line
42a to the third stitching line 42c and it is possible to make the
first stitching line 42a to the third stitching line 42c exposed on
the fastener element 22 inconspicuous.
[0165] Further, as the configuration colored to the stitching line
12, and the like is described in the first embodiment described
above, even in the configuration of the second embodiment, the
concealed slide fastener 1a may be configured so that the color of
the stitching thread 41 constituting the first stitching line 42a
to the third stitching line 42c, the color of the fastener tape 20,
the color of the fastener element 22, and the color of the core
thread 27 are appropriately combined with each other.
[0166] Thus by considering the color in the stitching line 12, and
the like, designability for the slide fastener manufactured by the
configuration of the second embodiment may be improved and
designability for the clothes, the bag, and the like mounted with
the slide fastener may also be improved.
Third Embodiment
[0167] FIG. 7 is an enlarged front view illustrating a part of a
fastener stringer according to a third embodiment.
[0168] A fastener stringer 50 according to the third embodiment
includes a fastener tape 20 and an element row 21 disposed along a
tape-side edge 20b of the fastener tape 20. Further, the element
row 21 is configured in such a manner that fastener elements 22
which are continuous in the coil shape are sealed to the fastener
tape 20 by using a stitching thread 51 while a core thread 27 is
inserted in upper and lower legs 24 and 25.
[0169] On the top of the fastener element 22, three rows of
stitching lines 52 of a first stitching line 52a disposed on the
coupling head 23 side, a second stitching line 52b disposed to be
adjacent to the first stitching line 52a in the width direction of
the tape, and a third stitching line 52c adjacent to the second
stitching line 52b and disposed at the connecting portion 26 side
are formed in the longitudinal direction of the tape.
[0170] In this case, the first stitching line 52a to the third
stitching line 52c are configured by configuring the stitching
thread 51 with the dual circular rods. The stitching thread 51 of
each row includes a needle thread stitched to a tape part between
the fastener elements 22 to form a stitch 53 while traveling on an
undersurface side of the tape of the fastener tape 20 and a looper
thread pressing a top of the fastener element 22 by traveling on
the upper leg 24 side of the fastener element 22 while being
interlaced with the needle thread by the stitch 53.
[0171] In the third embodiment illustrated in FIG. 7, the stitches
53 formed on the respective rows of the first stitching line 52a to
the third stitching line 52c are disposed every three pitches of
the fastener element 22 in the longitudinal direction of the tape,
respectively. Further, the stitch 53 formed on the second stitching
line 52b is disposed to deviate from the stitch 53 formed on the
first stitching line 52a by one pitch of the fastener element 22 at
one side (front side) in the longitudinal direction of the
tape.
[0172] Further, the stitch 53 formed on the third stitching line
52c is disposed to deviate from the stitch 53 of the second
stitching line 52b by one pitch of the fastener element 22 at one
side (front side) in the longitudinal direction of the tape and
further, disposed to deviate from the stitch 53 formed on the first
stitching line 52a by two pitches of the fastener element 22 at one
side (front side) of the longitudinal direction of the tape.
[0173] That is, the stitches 53 formed on the stitching lines 52a
to 52c, respectively are disposed to deviate at one side (front
side) in the longitudinal direction of the tape by each one pitch
of the fastener element 22, in the width direction of the tape.
Further, the stitch 53 is certainly formed between the fastener
elements 22 which are adjacent to each other.
[0174] In addition, as a modified example of the position of the
stitches 53 formed on the stitching lines 52a to 52c according to
the third embodiment, the stitch 53 formed on the second stitching
line 52b may be disposed to deviate from the stitch 53 formed on
the first stitching line 52a by each two pitches of the fastener
element 22 at one side (front side) in the longitudinal direction
of the tape and the stitch 53 formed on the third stitching line
52c may be disposed to deviate from the stitch 53 formed on the
first stitching line 52a by one pitch of the fastener element 22 at
one side (front side) in the longitudinal direction of the
tape.
[0175] That is, in regard to the positions of the stitches 53
formed on the stitching lines 52a to 52c, respectively, the stitch
53 formed on the second stitching line 52b may be disposed to
deviate from the stitch 53 formed on the first stitching line 52a
by each two pitches of the fastener element 22 at one side (front
side) in the longitudinal direction of the tape and the stitch 53
formed on the third stitching line 52c may be disposed to deviate
from the stitch 53 formed on the second stitching line 52b by each
one pitch of the fastener element 22 at the other side (rear side)
in the longitudinal direction of the tape, in the width direction
of the tape.
[0176] Further, a configuration in which the stitch 53 formed on
the second stitching line 52b is installed to deviate from the
stitch 53 formed on the first stitching line 52a by two pitches of
the fastener element 22 at one side (front side) in the
longitudinal direction of the tape and the stitch 53 formed on the
third stitching line 52c is disposed to deviate from the stitch 53
formed on the second stitching line 52b by each one pitch of the
fastener element 22 at the other side (rear side) in the
longitudinal direction of the tape is not illustrated.
[0177] When the fastener stringer 50 according to the third
embodiment, which has the above configuration, is manufactured, two
coil-shaped fastener elements 22 are sealed to the fastener tape 20
by using the sewing machine with two coil-shaped fastener elements
22 coupled to each other, similarly as the first and second
embodiments described above. In this case, in the third embodiment,
three sewing needles are provided in the stitching unit of the
sewing machine to manufacture one fastener stringer 50 in order to
seal one fastener element 22 to one fastener tape 20 by three rows
of stitching lines 52a to 52c.
[0178] When a pair of left and right fastener stringers 50 are
manufactured with two coil-shaped fastener elements 22 coupled to
each other, three sewing needles are provided at each of the left
and right sides.
[0179] Further, in the case of three sewing needles provided in the
stitching unit of the sewing machine, the sewing needle that forms
the second stitching line 52b and the sewing needle that forms the
third stitching line 52c are disposed to deviate from the sewing
needle that forms the first stitching line 52a at an upstream side
or a downstream side in the transportation direction of the
fastener tape 20 by the size for one pitch or two pitches of the
fastener element 22.
[0180] As a result, in the third embodiment, the respective
stitches 53 on the first stitching line 52a to the third stitching
line 52c may be disposed to deviate from each other according to
the positional relationship as described above. In addition, the
stitch 53 may be certainly formed between the adjacent fastener
elements 22.
[0181] By this configuration, the respective sewing needles that
form the first stitching line 52a to the third stitching line 52c
may reciprocate vertically without interfering with each other. In
addition, the fastener element 22 may be smoothly and stably sealed
to the fastener tape 20 without damaging the respective sewing
needles.
[0182] Further, in the third embodiment, when the fastener element
22 is stitched, the sewing needle reciprocates once vertically to
transport the fastener tape 20 and the fastener element 22
downstream with a transportation amount for three pitches of the
fastener element 22. As a result, the stitching process of the
fastener element 22 may be more efficiently performed within a
shorter time.
[0183] In addition, the fastener stringer 50 according to the third
embodiment, which is manufactured by performing the aforementioned
stitching process, may easily secure flexibility while increasing
the dimensional precision of the fastener element 22, and further,
improve even the abrasion resistance of the stitching line 52,
similarly as the first embodiment described above, and the
like.
[0184] Further, in the fastener stringer 50 according to the third
embodiment, three rows of stitching lines 52 are disposed on the
fastener element 22, and the stitches 53 formed on the respective
rows of the first stitching line 52a to the third stitching line
52c are prevented from overlapping with each other in the width
direction of the tape, and moreover, are disposed to, deviate from
each other even in the longitudinal direction of the tape.
[0185] As a result, the first stitching line 52a to the third
stitching line 52c may be made to look like the tape fabric having
the larger width similarly as the case of the second embodiment
described above. In addition, the fastener element 22 may be
concealed by the first stitching line 52a to the third stitching
line 52c, and the fastener element 22 may be made to be difficult
to be seen from the outside. As a result, it is possible to make
the first stitching line 52a to the third stitching line 52c
exposed onto the fastener element 22 to be inconspicuous.
[0186] Further, as the configuration colored to the stitching line
12, and the like, is described in the first embodiment described
above, the concealed slide fastener 1a may be configured so that
the color of the stitching thread 51 constituting the first
stitching line 52a to the third stitching line 52c, the color of
the fastener tape 20, the color of the fastener element 22, and the
color of the core thread 27 are appropriately combined with each
other, even in the configuration of the third embodiment.
[0187] Thus by considering the color in the stitching line 52, and
the like, designability for the slide fastener manufactured by the
configuration of the third embodiment may be improved and even
designability for the clothes, the bag, and the like mounted with
the slide fastener may be improved.
DESCRIPTION OF REFERENCE NUMERALS
[0188] 1 Slide fastener [0189] 1a (Concealed) slide fastener [0190]
6 Upper stopper [0191] 7 Lower stopper [0192] 8 Slider [0193] 10
Fastener stringer [0194] 10a Fastener stringer [0195] 11 Stitching
thread [0196] 11a Needle thread [0197] 11b Looper thread [0198] 12
Stitching line [0199] 12a First stitching line [0200] 12b Second
stitching line [0201] 13 Stitch [0202] 20 Fastener tape [0203] 20a
Tape main body portion [0204] 20b Tape-side edge [0205] 21 Element
row [0206] 22 Fastener element [0207] 23 Coupling head [0208] 24
Upper leg [0209] 25 Lower leg [0210] 26 Connecting portion [0211]
27 Core thread [0212] 30 Fastener tape [0213] 30a Tape main body
portion [0214] 30b Tape bending portion [0215] 30c Tape-side edge
[0216] 40 Fastener stringer [0217] 41 Stitching thread [0218] 42
Stitching line [0219] 42a First stitching line [0220] 42b Second
stitching line [0221] 42c Third stitching line [0222] 43 Stitch
[0223] 50 Fastener stringer [0224] 51 Stitching thread [0225] 52
Stitching line [0226] 52a First stitching line [0227] 52b Second
stitching line [0228] 52c Third stitching line [0229] 53 Stitch
* * * * *