U.S. patent application number 11/606876 was filed with the patent office on 2007-05-03 for waterproof zipper.
This patent application is currently assigned to Yen-Ping Sun. Invention is credited to Shin-Jen Wang.
Application Number | 20070094852 11/606876 |
Document ID | / |
Family ID | 37994421 |
Filed Date | 2007-05-03 |
United States Patent
Application |
20070094852 |
Kind Code |
A1 |
Wang; Shin-Jen |
May 3, 2007 |
Waterproof zipper
Abstract
A waterproof zipper having a back surface of each fastener strip
is permeated with solvent-based PU adhesive contains solid contents
34.about.36% toluene or methyl-ethyl-ketone 64.about.66% with a
viscosity 60,000.about.90,000 cps at 25.degree. C. and hardener
contains butyl-acetate 23.about.27%, polyisocyanate 73.about.77%;
and then a PU film is adhered to the back surface by thermal
plastic stage so as to be formed as a waterproof layer which
includes an inner layer permeating into the fastener strips and an
outer layer at an outer side of the fastener strips.
Inventors: |
Wang; Shin-Jen; (Taipei,
TW) |
Correspondence
Address: |
SALLY CHANG
7F, NO. 3, ALLEY 32, SEC. 6 CHUNG-HSIAO EAST RD.
TAIPEI, TAIWAN, R.O.C. 115
TAIPEI
115
TW
|
Assignee: |
Sun; Yen-Ping
|
Family ID: |
37994421 |
Appl. No.: |
11/606876 |
Filed: |
December 1, 2006 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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11207735 |
Aug 22, 2005 |
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11606876 |
Dec 1, 2006 |
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10734912 |
Dec 9, 2003 |
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11207735 |
Aug 22, 2005 |
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Current U.S.
Class: |
24/389 |
Current CPC
Class: |
A44B 19/32 20130101;
Y10T 24/2514 20150115 |
Class at
Publication: |
024/389 |
International
Class: |
A44B 19/32 20060101
A44B019/32 |
Foreign Application Data
Date |
Code |
Application Number |
May 27, 2003 |
TW |
92114291 |
Claims
1. A nylon waterproof zipper comprising two symmetric fastener
strips; each fastener strip has a front surface and a back surface;
an inner side of the front surface of each fastener strip having a
cord thread protruded from the surface; two chains being mounted
along the cord threads, respectively; the cord threads being fixed
to the fastener strips, respectively; the two chains being engaged
by a coupling slider; a back surface of each fastener strip being
combined with a thin waterproof layer; characterized in that: a
back surface of each fastener strip is permeated with solvent-based
PU adhesive contains solid contents 34.about.36% toluene or
methyl-ethyl-ketone 64.about.66% with a viscosity
60,000.about.90,000 cps at 25.degree. C. and hardener contains
butyl-acetate 23.about.27%, polyisocyanate 73.about.77%; and then a
PU film is adhered to the back surface by thermal plastic stage so
as to be formed as a waterproof layer which includes an inner layer
permeating into the fastener strips and an outer layer at an outer
side of the fastener strips.
2. The nylon waterproof zipper as claimed in claim 1, wherein the
waterproof layer is formed with textures.
3. The nylon waterproof zipper as claimed in claim 1, wherein the
waterproof layer is formed with printing patterns.
4. The nylon waterproof zipper as claimed in claim 1, wherein a
thickness of the inner layer is over one third of each fastener
strip.
5. The nylon waterproof zipper as claimed in claim 1, wherein a
thickness of the inner layer is over one half of each fastener
strip.
Description
CROSS REFERENCE TO RELATED APPLICATION
[0001] This is a C-I-P application of U.S. application Ser. No.
11/207,735, which is a divisional application of U.S. application
Ser. No. 10/734.912, filed Dec. 9, 2003 divided by products in its
entirety herein.
FIELD OF THE INVENTION
[0002] The present invention relates to waterproof zippers.
BACKGROUND OF THE INVENTION
[0003] In the prior art of manufacturing slide fastener, it is
found that the slide fastener can be immersed in repellant liquid
so that mist will not be absorbed by stringer tapes easily.
However, the result cannot be maintained for a longer time. When it
is flushed by large amount of water, the stringer tapes always
exposes in the steam, the waterproof effect will be reduced.
[0004] In U.S. Pat. No. 4,607,416 entitled "Fluid tight slide
fastener" to Tanikawa on Aug. 26, 1986, it taught sealing strip is
substantially coextensive with the tape but having an inner edge
projecting slightly beyond the extremity of the inner longitudinal
edge of the tape. The tape includes stretchable threads in the
intermediate region to render this region stretchable transversely
of the tape, while the inner and outer edge regions are
non-stretchable.
[0005] In U.S. Pat. No. 5,642,525 entitled "Elbow protective
garment" to Ketola on Jul. 1, 1997, it taught closure of the zipper
is accomplished by pulling the slide 15 up the zipper to effect
meshing of the zipper teeth, which is well known. The elasticity
and resilience function make the garment self-securable. The body
of the protective garment is preferably fabricated from a soft,
thick, woven material, and has full center cut, so that when the
body is closed by the closure means the body defines a modified
tube having an enlarged or balloon-like central area.
[0006] In U.S. Pat. No. 6,537,658 entitled "Film-based dressing
material with imprint" to Bruss et al. on Mar. 25, 2003, it taught
transparent film bearing an imprint. This imprint is applied in
particular by reversal printing. In a reversal printing process, a
mirror-inverted print is used. When the impression/inscription is
viewed through the film, it is perceived in normal form; a
self-adhesive layer is arranged as a non-elastic adhesive film on
its reverse side. One further film is present on the transparent
film with the imprint; the impression excludes interactions between
the printed PU film side with the solvent-based adhesive
composition.
[0007] Moreover, in U.S. Pat. No. 6,105,214 patent, "water proof
slide fastener and process for preparing the same" assigned to
Stuart Press on 22 Aug. 2000. The characteristics of the invention
are a water resistant slide fastener, including a pair of stringer
tapes each having first and second opposed surfaces and each having
a series of gripper elements positioned along edges of said first
surface; and a water resistant layer on said second surfaces,
wherein said water resistant layer has an adhesion to said stringer
tapes of at least about 6 lb/in. Thus, a combined multi-layer film
adheres to the surface of stringer tapes. As they oriented outward
to bear the abrasion or impact directly, they will be damaged. The
water proof effect is reduced.
[0008] In U.S. Pat. No. 6,427,294 "water proof slide fastener and
manufacturing method thereof" assigned to YKK Co. on 6 Aug. 2002,
disclosed a multi-layer film laminated to the stringer tapes.
Providing a waterproof slide fastener in which a synthetic resin
film is fused to a fastener tape in order to prevent a perforation
phenomenon that the synthetic resin film does not exist locally. A
laminated synthetic resin film composed of low melting point resin
layer having melting point of, for example, 100-140.degree. C. and
high melting point resin layer having melting point of, for
example, 150-230.degree. C. is fused to a surface or both surfaces
of a pair of the fastener tapes with the low melting point resin
layer being in contact with and opposing the fastener tape by
heating with pressure. Fastener elements are mounted onto a side
edge of the fastener tape and the laminated synthetic resin film is
formed so as to protrude outward from the side edge of the fastener
tape and a center point of coupling of the fastener elements.
Because the high melting point resin layer disposed on the surface
of the fastener tape is not melted, no perforation phenomenon
occurs. Further, because the laminated synthetic resin film
protrudes from the side edge, waterproof function is secured.
[0009] The various objects and advantages of the present invention
will be more readily understood from the following detailed
description when read in conjunction with the appended drawing.
SUMMARY OF THE INVENTION
[0010] Accordingly, the present invention is to provide a nylon
waterproof zipper comprising two symmetric fastener strips; each
fastener strip has a front surface and a back surface; an inner
side of the front surface of each fastener strip having a cord
thread protruded from the surface; two chains being mounted along
the cord threads, respectively; the cord threads being fixed to the
fastener strips, respectively; the two chains being engaged by a
coupling slider; a back surface of each fastener strip being
combined with a thin waterproof layer; characterized in that: a
back surface of each fastener strip is permeated with solvent-based
PU adhesive contains solid contents 34.about.36% toluene or
methyl-ethyl-ketone 64.about.66% with a viscosity
60,000.about.90,000 cps at 25.degree. C. and hardener contains
butyl-acetate 23.about.27%, polyisocyanate 73.about.77%; and then a
PU film is adhered to the back surface by thermal plastic stage so
as to be formed as a waterproof layer which includes an inner layer
permeating into the fastener strips and an outer layer at an outer
side of the fastener strips.
[0011] Another object of the present invention is to provide a
nylon waterproof zipper wherein the waterproof layer is formed with
textures; wherein a thickness of the inner layer is over one third
of each fastener strip; wherein a thickness of the inner layer is
over one half of each fastener strip; and wherein the waterproof
layer is formed with printing patterns.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] FIG. 1 is a front view of the waterproof zipper of the
present invention.
[0013] FIG. 2A is backside perspective view of the waterproof
zipper of the present invention.
[0014] FIG. 2B is a backside perspective view of the waterproof
zipper of the present invention, wherein the zipper is
patterned.
[0015] FIG. 2C is a backside elevation perspective view of the
waterproof zipper with patterns.
[0016] FIG. 3 is a block diagram of the first stage of the first
embodiment of the present invention.
[0017] FIG. 4 is a manufacturing flow diagram of the first stage of
the first embodiment of the present invention.
[0018] FIG. 4A is a cross sectional view showing the nylon zipper
of the present invention.
[0019] FIG. 4B is a cross sectional view showing the nylon zipper
added with inner layer.
[0020] FIG. 4C is a cross sectional view showing that the inner
layer is permeated into the fibers of the fastener strips of the
present invention.
[0021] FIG. 5 is a manufacturing block diagram of the second stage
of the first embodiment of the present invention.
[0022] FIG. 6 is a manufacturing flow diagram of the second stage
of the first embodiment of the present invention.
[0023] FIG. 6A is a cross sectional view showing the nylon zipper
of the present invention.
[0024] FIG. 6B is a cross sectional view about the nylon zipper
with PU film in the present invention, where the PU film is
combined with the inner layer.
[0025] FIG. 6C is a cross sectional view about the nylon zipper of
the present invention, where the nylon zipper is combined with a
waterproof layer by thermal plastics, and the PU film is combined
with the inner layer.
[0026] FIG. 7 is a block diagram for the manufacturing stage in the
second embodiment of the present invention.
[0027] FIG. 8 is a flow diagram about the manufacturing stage of
the second embodiment of the present invention.
[0028] FIG. 9 is a block diagram about the manufacturing stage of
the third embodiment of the present invention.
[0029] FIG. 10 is a flow diagram about the manufacturing stage of
the third embodiment of the present invention.
[0030] FIG. 11 is a block diagram about the manufacturing stage of
the fourth embodiment of the present invention.
[0031] FIG. 12 is a cross sectional view about the nylon zipper of
the present invention after screen printing.
[0032] FIG. 13 is a cross sectional view about the nylon zipper of
the present invention after press-printing.
DETAILED DESCRIPTION OF THE INVENTION
[0033] In order that those skilled in the art can further
understand the present invention, a description will be described
in the following in detail. However, these descriptions and the
appended drawings are only used to cause those skilled in the art
to understand the objects, features, and characteristics of the
present invention, but not to be used to confine the scope and
spirit of the present invention defined in the appended claims.
[0034] Referring to FIG. 1, the nylon waterproof zipper 10 of the
present invention includes two symmetric fastener strips 11, 12.
Each fastener strip has a front surface and a back surface. An
inner side of the front surface of each fastener strip 11, 12 has a
cord thread 13, 14 protruded from the surface thereof. The chains
15, 16 are mounted along the cord threads 13, 14, respectively. The
cord threads 13, 14 are fixed to the fastener strips 11, 12,
respectively. Two chains 15, 16 are meshed with a coupling
slider.
[0035] Referring to FIG. 2A, the back surfaces of the fastener
strips 11, 12 are illustrated. It is illustrated that the cord
threads 13, 14 and chains 15, 16 are hidden in the fastener strips
11, 12. Each back surface is combined with a thin waterproof layer
17, 18. After engaging the chains 15, 16 closely, the waterproof
layers 17, 18 have the effect of waterproof so that water will not
drain into the fastener strips 11, 12.
First Embodiment
[0036] In this embodiment, the performance is described in two
stages. FIG. 3 shows the first stage and FIG. 5 shows the second
stage. At first, referring to FIG. 3, the first stage includes the
steps of feeding material 21, gluing 22, pressing 23, drying 24,
and outputting 25.
[0037] As shown in FIG. 4, in the feeding stage 21, the nylon
zipper 10 passes through a feeding device (formed by an upper and a
lower rollers 32, 33) and is taken out from the feeding tank 31 so
that the nylon zipper 10 is extended properly to be in flat state.
The cross section view thereof is shown in FIG. 4A.
[0038] Next, a gluing step 22 is performed. In this step, the
fastener strips 11, 12 are gluing so that the back sides of the
fastener strips 11, 12 are coated with a layer of solvent-based PU
adhesive contains solid contents 34.about.36% toluene or
methyl-ethyl-ketone 64.about.66% with a viscosity
60,000.about.90,000 cps at 25.degree. C. and hardener contains
butyl-acetate 23.about.27%, polyisocyanate 73.about.77%. Thereby,
the back side of the fastener strip is permeated with such a PU
adhesive 37. The gluing device is made of a gel storage tank 34
with a gluing roller 35 therein. A pressing roller 36 with a
rotation direction opposite to the gluing roller 35 is installed at
one side of the nylon zipper 10 opposite to the gluing roller 35.
When the gluing roller 35 is adhered with the PU adhesive 37 in the
gel storage tank 34, the pressing roller 36 presses the fastener
strips 11, 12 so that the PU adhesive 37 is transferred to the back
sides of the fastener strips 11, 12 and is combined to the
polyester fibers as to form an inner layer. The cross sectional
view of the gluing nylon zipper 10 is illustrated in FIG. 4B. If
material of the fastener strips are changed the PU adhesive can be
replaced by other adhesives.
[0039] Next, a pressing step 23 is performed. When the fastener
strips 11, 12 pass through the pressing rollers 38, 39, the PU
adhesive is pressed into the polyester fibers of the fastener
strips 11, 12. The capillary is helpful to the addition of the PU
adhesive by pressing without increasing the thickness of the
fastener strips 11, 12. Meanwhile, a good combining force is
generated. At this time, the cross sectional view of the nylon
zipper 10' is illustrated in FIG. 4C. Besides, the pressing rollers
38, 39 have further function of extending and smoothing the
fastener strips 11, 12 with the guide rollers 41, 42 for
drying.
[0040] In drying step 24, the fastener strips 11, 12 are heated in
the heating box 40 so that solvent of the PU adhesive 37 vaporizes.
The temperature of the drying box is about 120.about.180.degree. C.
The heating time is determined by temperature, for example, about
12 seconds in 150.degree. C.
[0041] Finally, the guiding step 25 is performed. In the guide
device formed by the rollers 41, 42, when the active roller 41
rotates, the fastener strips 11, 12 will be driven so as to output
the nylon zipper 10 coated with PU adhesive 37 as an inner layer.
Besides, the two rollers move speedily with a pull force for
adjusting fastener strips 11, 12.
[0042] In above stages, the first stage can be repeated 1 to 3
times for increasing the coating and adhering effect between the PU
adhesive 37 and the fastener strips 11, 12. This is related to the
combining effect of the second manufacturing stage and PU adhesive
37.
[0043] With reference to FIG. 5, the block diagram of the second
stage of the present invention is illustrated. Moreover, FIG. 6
shows the flow diagram of the second stage. From FIG. 5, it is
shown that the stage includes the steps of feeding 26, adhering 27,
heating and extruding 28, cutting 29 and guiding 30.
[0044] In above feeding step 26, the nylon zipper 10 coated with PU
adhesive 37 are driven by two rollers 44, 45 and then are taken out
from the feeding tank 43. The nylon zipper 10 is extended properly.
The cross sectional view of the structure of the nylon zipper 10 is
illustrated in FIG. 6A.
[0045] Next, the adhering step 27 is executed. A compound film
formed by a release paper 50 and PU film 51 is wound along a
winding roller 46. The width of the film is equal to that of the
nylon zipper 10 coated with PU adhesive 37. When the compound film
and nylon zipper are pressed by the rollers 47, 48, the PU film 51
is tightly adhered to the PU adhesive 37 at the backside of the
fastener strips, as shown in FIG. 6B. Furthermore, the release
paper 50 of the film is separated from the PU film 51 behind the
roller 47, then separated release paper 50 guided out by another
roller 49. Generally, the thickness of the PU film 51 is about
2.about.5 mm, which can be increased based on the manufacturing
conditions. The PU film 51 is a single layer film. It is especially
suited for batch production with a variety of types of different
colors. Besides, the pigment can be added in the manufacturing of
the film for getting the desired colors. If no pigment is added,
agents for preventing change of color or yellowing can be added for
getting a transparent PU film. Moreover, anti-freeze agent,
anti-acid agent, anti-alkali agent, anti-hardening agent,
plasticizer etc. can be added. Moreover, since the coarseness of
the surface of the release paper is not uniform, when it is
separated from the PU film 51, the inner surface of the PU film 51
may be coarse or smooth. If it is a coarse surface, the waterproof
layer has a dim surface. If it is smooth, the waterproof layer is
bright. In other words, a bright surface is transparent, and the
dim surface is semi-transparent.
[0046] Then, the heating step 28 is executed. Mainly, the nylon
zipper 10'' adhering on the PU film 51 is transferred to a heating
box 52 to be heated in a temperature of 120.about.200.degree. C.
through 12.about.17 seconds so that the PU film 51 is combined with
the PU adhesive 37 by thermal plastics (referring to FIG. 6C).
Since the PU film 51 and PU adhesive 37 are main components, after
overheating, they are provided as plasticizer on the compatiblility
of the zipper and then they are combined. Furthermore, a rear end
of the heating box 52 may be installed with an extruding device
formed by an upper press roller 54 and a lower press roller 53. The
rollers presses the zipper 10 so that the backsides of the fastener
strips 11, 12 are formed with waterproof layers 17, 18 combined
with the inner layer of PU adhesive. Since the adhesion of the
waterproof layers and the fastener strips 11, 12 are concrete, the
two are firmly secured.
[0047] Next, the cutting stage 29 is performed. A thin knife 55
between the two fastener strips 11, 12 cut the moving PU film 51
through the median line thereof so that the original single sheet
waterproof layer is cut into a left waterproof layer 17 and a right
waterproof layer 18 (referring to FIG. 2A). The cutting depth can
be determined by the thickness of the PU film 51. Since the
waterproof layer cut by the cutting knife 55, so general sliders
can be adapted to the well-formed zipper after it is finished.
There is no need to design a special kind of slider for the zipper
products of the present invention.
[0048] Finally, a guide device formed by a set of upper and lower
rollers 56 and 57 are used in the guide step 30. The roller 56 is a
driving wheel and the roller 57 is a driven roller. The driving
wheel 56 rotates to drive the fastener strips 11, 12 so as to
output the nylon zipper 10 with waterproof layers 17 and 18 at the
backside thereof. Besides, the two rollers 56, 57 have the function
of adjusting the pull force and speed of the fastener strips.
Furthermore, when a rear end of the heating box 52 is not installed
with two press rollers 53, 54, the rollers 56, 57 can be used to
replace the two press rollers 53, 54 for pressing the PU film 51,
PU adhesive 37 and the fastener strips 11, 12 so as to have an
optimum effect.
[0049] Above mentioned is one preferred embodiment of the present
invention for describing the present invention in detail, however,
some modified embodiments within the spirit of the present
invention can be used without confine the scope of the present
invention. For example, in the first stage, the feeding step 21 and
the gluing step 2 with a preheat step (not shown). Thereby, the
unglued zipper 10' is preheated in temperature between
70.about.120.degree. C. Thereby, the unglued nylon zipper 10' is
more suitable to be adhered to the PU adhesive 37. In other words,
heated unglued nylon zipper 10 has a preferred adhesion coating
effect to the PU adhesive 37.
[0050] Moreover, in the second step 22, other adhesive combinable
to the PU film 51, such as base material polymer (polyester polyol
or acrylic acid polyol) or micro inorganic stuff agent) which is
formed by bridging and hardening). Thereby, it is not confined to
above said PU adhesive 37.
[0051] Further, in second stage, the heating box 52 can be changed
as many sets of heating and pressing rollers necessary. Besides, a
plurality of press rollers or a plurality of heating sections can
be used in the present invention so that the PU film 51, PU
adhesive 37 and fastener strips 11, 12 have an optimum combining
effect.
Second Embodiment
[0052] In this embodiment, the first and second manufacturing
stages are integrated as a continuous production line, as shown in
FIGS. 7 and 8. The steps are feeding step 21, gluing step 22,
pressing step 23, drying step 24, adhesion step 27, heating step
28, cutting step 29, guide step 30. In this embodiment, the guide
device 25 in the first step and the feeding step 26 in the second
stage can be reduced.
Third Embodiment
[0053] To simplify the manufacturing lines in FIGS. 7 and 8, the
block diagram in FIG. 9 can be performed. The stages includes the
step of feeding step 21, gluing step 22, adhesion step 27, heating
step 28, cutting step 29 and guide step 30, as shown in FIG. 10. In
this embodiment, not only the manufacturing stage is simplified,
but also a batch of small amount in manufacturing can be performed
easily. From above description, it is known that the embodiments in
FIGS. 9 and 10 are basic and simple manufacturing method in the
present invention.
Fourth Embodiment
[0054] In above mentioned three manufacturing method, a printing
step 221 or a press step 222 is added between the gluing step 22
and the adhesion step 23 (referring to FIG. 11). In the printing
step 221, the inner surface of the PU film 51 (not outer surface)
is printed with beautiful pattern 512 (referring to FIG. 12) by
screen printing. If it is presented by a perspective view, as shown
in FIG. 2B, and practical view is illustrated in FIG. 16. In the
press step 222, the convex or concave textures are printed on the
inner surface (not outer surface) of the PU film 51 to form
textures 513 (referring to FIG. 13). A perspective view is
illustrated in FIG. 2C. In this embodiment, after the PU film 51 is
combined with the PU gel 37, the patterns 512 or the texture 513
will not disappear out due to friction or scraping. Since the
waterproof layer is transparent, the pattern or texture is clear
and it can be identified easily. Moreover, the transparent texture
513 can be presented as protrusion texture according to the concave
or convex textures already formed on the inner surface of the PU
film.
[0055] In above FIGS. 12, 13, it is found that for example, the
waterproof layer 18 includes an inner layer 18a due to the PU
adhesive 37 first permeated into the fastener strips 12 made of
polyester fibers and an outer layer 18b, most of it is composed of
the PU film, laminated at the outer side of the fastener strips 12.
The thickness of the inner layer 18a permeated with PU adhesive 37
is over 1/3 of the fastener strips, preferably, over 1/2.
[0056] In In U.S. Pat. No. 6,105,214, a waterproof film is glued
with adhesive; or a lower hardness film is already transferred to
the backside of the fastener strip; then the waterproof film can be
adhered to the backside of the fastener strip by heating, PU
adhesive and PU film combined as a waterproof layer by thermal
plastic stage. Therefore, in the present invention, the physical
properties, such as adhesion, heat-tolerance, etc. of the single
layer waterproof layer are improved so that the waterproof layer
can be generated with pattern or texture. This is not disclosed by
the prior art.
[0057] Effect of the present invention will be described herein. In
the present invention, the PU adhesive is permeated into the fibers
of the fastener strip so that the fastener strip is adhesive and
has the function of waterproof. That is to say, when the outer PU
film is destroyed by external force, the inner PU adhesive has the
effect of waterproof. The PU adhesive and PU film are combined as a
single film by thermal plastic stage and thus the manufacturing
stage is simple and cost-efficient. The present invention can be
suitable for different climate factors even boiled in water, which
is also designed for preventing from yellowing and deformation. The
solvent of the inner PU adhesive can vaporize completely so as not
to harm the body. The inner texture or pattern of the waterproof
layer can prevent from scraping and have the function of
counterfeit-proof.
Comparison of the Present Invention with Prior Arts
[0058] In the following, the present invention is compared with a
waterproof zipper adhered by thermal melting adhesive.
[0059] The waterproof zipper of the present invention (black) and
the prior art waterproof zipper (white) are used as examples. In a
temperature of 100.degree. C. and boiling in water through 30
minutes, the waterproof layer of the waterproof zipper of the
present invention is retained in a good condition and the
waterproof layer of the prior art waterproof zipper scraped.
[0060] When the two waterproof zippers are sunk in organic solvent
(ether) through 5 minutes. The waterproof layer of the waterproof
zipper of the present invention is retained as the original
condition, but the waterproof layer of the prior art has been
scraped.
[0061] Both in physical and chemical tests, the waterproof zipper
of the present invention matches the requirement of international
standard.
[0062] Determination of Amines in Dyestuff
[0063] As per Adidas-Salomon A-01 requirement with reference to
German test procedure for detection of carcinogenic amine in dyed
materials published in German official compilation of test and
inspection procedures, extracted by citrate buffered solution pH 6
at 70.degree. C. and detected by combination of gas
chromatographic-mass spectrometric (GC-MS) and this layer
chromatographic (TLC) analysis. Based on German Texture method
(B82.02-2 January 1998) and polyester method (B82.02-4 January
1998) Following amino material is tested:
[0064] 4-Aminodiphenyl
[0065] Benzidin
[0066] 4-Chlor-O-Toluidin
[0067] 2-Naphthylamin
[0068] O-Aminoazotoluol
[0069] 2-Amino-4-Nitrotoluol
[0070]
P-Chloroanilin2,4'-Diaminoanisol(4-Methoxy-M-Phenylenediamin)
[0071] 4,4'-Diaminodiphenylmethan
[0072] 3,3'-Dichlorobenzidin
[0073] 3,3'-Dimethoxybenzidin
[0074] 3,3'-Dimethylbenzidin
[0075] 3,3'-Dimethyl-4,4'Diaminodiphenylmethan
[0076] P-Kresidin(2-Methoxy-5-Methylanilin)
[0077] 4,4'-Methylen-Bis-(2-Chloranilin)
[0078] 4,4'-Oxydianilin
[0079] 4,4'-Thiodianilin
[0080] O-Toluidin
[0081] 2,4-Toluylendiamin
[0082] 2,4,5-Trimethylanilin
[0083] O-Anisidine
[0084] 2,4-Xylidine
[0085] 2,6-Xylidine
[0086] 4-Aminoazobenzene
[0087] The test result is below 5 ppm, it can assure that the
minimum and maximum capacity is 30 ppm. The result is matched to
the test standard.
[0088] (2) Detection by German standard test method: the heavy
metal in the chromatography of the waterproof layer is lower than
standard value. TABLE-US-00001 Tested item Test method Result Limit
Sb DIN38405D 32 <1 10 ppm Cd DIN38406D 19 <0.01 0.1 ppm Pb
DIN38406D 6 <0.1 1 ppm Hg DIN38406D 12 <0.01 0.02 ppm Cr
DIN38406D 10 <0.1 2 ppm
[0089] Remarks: <=Less than
[0090] ppm=Parts per million
[0091] (3) Referring to German Industrial Standard (DIN53314:1996),
the content of the six bond chromium by the ultraviolet ray
analysis: TABLE-US-00002 Test component Result in ppm Limit
ppm(Max) Cr ND(<0.1) 3
[0092] Remarks: ppm=Parts per million
[0093] <=Less than
[0094] ND=Not detected
[0095] (4) Referring to Japan 112 by spectrophotometer analysis to
detect the content of Formaldehyde. TABLE-US-00003 Test component
Result in ppm Limit ppm Formaldehyde <1 75 ppm
[0096] Remarks: ppm=Parts per million
[0097] <=Less than
[0098] (5) By Analysis by gas chromatography TABLE-US-00004 Test
sample Result (ppm As Sn) Limit (ppm As Sn) Mono-butyl tin (MBT)
0.19 ppm 1 ppm
[0099] Remarks: ND=Not detected
[0100] Detection limit=0.05 ppm As Sn
[0101] ppm=Parts per million
[0102] (6) Analysis by gas chromatography TABLE-US-00005 Test
sample Result (ppm As Sn) Limit (ppm As Sn) Di-butyl tin (DBT) 0.40
1 ppm
[0103] Remarks: ND=Not detected
[0104] Detection limit=0.05 ppm As Sn
[0105] ppm=Parts per million
[0106] (7) Analysis by gas chromatography TABLE-US-00006 Test
sample Result(ppm As Sn) Limit(ppm As Sn) Tri-butyl tin(TBT) ND
ND
[0107] Remarks: ND=Not detected
[0108] Detection limit=0.05 ppm As Sn
[0109] ppm=Parts per million
[0110] (8) (PH) Vaule detection TABLE-US-00007 Test sample pH value
Limit PH 5.67 4.0-7.5
[0111] Result
[0112] All the test is in safety range: TABLE-US-00008 Item:
Result: Dry containing nitrogen qualified Components of heavy metal
qualified Content chromium qualified Content of Formaldehyde
qualified Mono-butyl tin(MBT) qualified Contents of Di-butyl
tin(DBT) qualified Contents of Tri-butyl tin(TBT) qualified PH
value qualified
[0113] Although the present invention has been described with
reference to the preferred embodiments, it will be understood that
the invention is not limited to the details described thereof.
Various substitutions and modifications have been suggested in the
foregoing description, and others will occur to those of ordinary
skill in the art. Therefore, all such substitutions and
modifications are intended to be embraced within the scope of the
invention as defined in the appended claims.
* * * * *