U.S. patent application number 14/835740 was filed with the patent office on 2015-12-17 for warp knitted fabric and method of manufacturing the same.
The applicant listed for this patent is Pacific Textiles Limited. Invention is credited to Chun Wah Samuel Yeung.
Application Number | 20150361603 14/835740 |
Document ID | / |
Family ID | 51356341 |
Filed Date | 2015-12-17 |
United States Patent
Application |
20150361603 |
Kind Code |
A1 |
Yeung; Chun Wah Samuel |
December 17, 2015 |
WARP KNITTED FABRIC AND METHOD OF MANUFACTURING THE SAME
Abstract
A warp knitted fabric includes a set of non-elastomeric yarn of
substantially the same type, fully threaded from a guide bar at the
front side of the Tricot type warp knitting machine and knitted in
a close 2.times.1 stitch pattern, and a set of elastomeric yarn of
substantially the same type, fully threaded from a guide bar at the
rear side of the Tricot type warp knitting machine and knitted in
an open 1.times.1 pillar stitch pattern. The gripping and gummy
characteristics on the technical face of the fabric composed of the
non-elastomeric and elastomeric yarns are firmly accomplished and
quantifiably exposed. A method of manufacturing the warp knitted
fabric of this type is also disclosed.
Inventors: |
Yeung; Chun Wah Samuel;
(Hong Kong, HK) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Pacific Textiles Limited |
Hong Kong |
|
HK |
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|
Family ID: |
51356341 |
Appl. No.: |
14/835740 |
Filed: |
August 26, 2015 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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14074737 |
Nov 8, 2013 |
|
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14835740 |
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Current U.S.
Class: |
66/204 ; 66/209;
66/211 |
Current CPC
Class: |
D04B 21/16 20130101;
D04B 21/18 20130101 |
International
Class: |
D04B 21/18 20060101
D04B021/18; D04B 21/20 20060101 D04B021/20; D04B 21/16 20060101
D04B021/16 |
Claims
1. A method of manufacturing warp knitted fabrics comprising the
steps of: (a) selecting a machine gauge of a Tricot type warp
knitting machine based on a required fabric weight in the unit of
gram per square meter; and (b) selecting an aggregate linear mass
density of a non-elastomeric yarn with first formulated effective
ranges for an applicable yarn fineness, corresponding to the gauge
of the warp knitting machine being adopted; and (c) selecting an
aggregate linear mass density of an elastomeric yarn with second
formulated effective ranges for an applicable yarn fineness,
corresponding to the gauge of the warp knitting machine being
adopted; and (d) selecting a runner length of the non-elastomeric
yarn with first formulated effective ranges for an applicable yarn
runner length, corresponding to the gauge of the warp knitting
machine being adopted; and (e) selecting a runner length of the
elastomeric yarn with second formulated effective ranges for an
applicable yarn runner length, corresponding to the gauge of the
warp knitting machine being adopted; and (f) knitting a set of the
non-elastomeric yarns of substantially the same type, fully
threaded from a first guide bar at a front side of the Tricot type
warp knitting machine and knitted in a close 2.times.1 stitch
pattern; and (g) knitting a set of the elastomeric yarns of
substantially the same type, fully threaded from a second guide bar
at a rear side of the Tricot type warp knitting machine and knitted
in an open 1.times.1 pillar stitch pattern; (h) wherein the
gripping and gummy characteristics on a technical face of the
knitted fabric comprised of the non-elastomeric and elastomeric
yarns are firmly accomplished and quantifiably uncovered.
2. The method as claimed in claim 1, wherein major processes of
manufacturing the warp knitted fabrics comprise the techniques of:
(a) establishing the first formulated effective ranges of the
aggregate linear mass density, in the unit of denier, of the
non-elastomeric yarn(s) against the machine gauges, ranged
inclusively from 28 needles per inch through 50 needles per inch,
of the Tricot type warp knitting machine where: I. the aggregate
linear mass density at a high side boundary equals
1398.times.e-0.1.times.(machine gauge) with rounded off decimal;
and II. the aggregate linear mass density at a low side boundary
equals 466.times.e-0.1.times.(machine gauge) with rounded off
decimal; and III. the ranges of the effective linear mass densities
are laid between the numerical solutions, with rounded off decimal,
at the high side boundary in 2(a)I and the low side boundary in
2(a)II; and (b) establishing the second formulated effective ranges
of the aggregate linear mass density, in the unit of denier, of the
elastomeric yarn(s) against the machine gauges, ranged inclusively
from 28 needles per inch through 50 needles per inch, of the Tricot
type warp knitting machine where: I. the aggregate linear mass
density at a high side boundary equals
1463.times.e-0.0832.times.(machine gauge) with rounded off decimal;
and II. the aggregate linear mass density at a low side boundary
equals 488.times.e-0.0832.times.(machine gauge) with rounded off
decimal; and III. the ranges of the effective linear mass densities
are laid between the numerical solutions, with rounded off decimal,
at the high side boundary in 2(b)I and the low side boundary in
2(b)II.
3. The method as claimed in claim 1, wherein major processes of
manufacturing the warp knitted fabrics comprise the techniques of:
(a) establishing the first formulated effective ranges of the
runner length, in the unit of millimeter per rack, of the
non-elastomeric yarn(s), fully threaded from a guide bar at the
front side of the Tricot type warp knitting machine, against the
machine gauges, ranged inclusively from 28 needles per inch through
50 needles per inch, where: I. the yarn runner length at a high
side boundary equals 4213.times.e-0.0344.times.(machine gauge) with
rounded off decimal; and II. the yarn runner length at a low side
boundary equals 3447.times.e-0.0344.times.(machine gauge) with
rounded off decimal; and III. the ranges of the effective yarn
runner lengths are laid between the numerical solutions, with
rounded off decimal, at the high side boundary in 3(a)I and the low
side boundary in 3(a)II; and (b) establishing the second formulated
effective ranges of the runner length, in the unit of millimeter
per rack, of the elastomeric yarn, wrapped on the warp beam(s) with
50% accumulated beaming stretch and fully threaded from a guide bar
at the rear side of the Tricot type warp knitting machine, against
the machine gauges, ranged inclusively from 28 needles per inch
through 50 needles per inch, where: I. the yarn runner length at a
high side boundary equals 3246.times.e-0.0456.times.(machine gauge)
with rounded off decimal; and: II. the yarn runner length at a low
side boundary equals 2399.times.e-0.0456.times.(machine gauge) with
rounded off decimal; and III. the ranges of the effective yarn
runner lengths are laid between the numerical solutions, with
rounded off decimal, at the high side boundary in 3(b)I and the
numerical solution at the low side boundary in 3(b)II.
4. The method as claimed in claim 1, wherein major processes of
manufacturing the warp knitted fabrics comprise the techniques of:
(a) establishing effective ranges of fabric pulling tension
immediately after the fabric being formed on the Tricot type warp
knitting machine, also known as take-up tension, in the unit of
course per centimeter, against the machine gauges, ranged
inclusively from 28 needles per inch through 50 needles per inch,
where: I. the take-up tension at a high side boundary equals the
numerical solution, with rounded off decimal, of the product of the
positive rational number of "1.15" and the positive integer number
of the machine gauge being adopted, added by the positive integer
number of "16"; and II. the take-up tension at a low side boundary
equals the numerical solution, with rounded off decimal, of the
product of the positive rational number of "0.85" and the positive
integer number of the machine gauge being adopted, added by the
positive integer number of "12"; and III. the ranges of the
effective take-up tensions are laid between the numerical
solutions, with rounded off decimal, at the high side boundary in
4(a)I and the low side boundary in 4(a)II.
5. The method as claimed in claim 1, wherein the knitting of the
non-elastomeric and elastomeric yarns is carried out by a Tricot
type warp knitting machine.
6. The method as claimed in claim 1, wherein the non-elastomeric
yarns are nylon yarns.
7. The method as claimed in claim 1, wherein the elastomeric yarns
are spandex yarns.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a Divisional application of U.S. patent
application Ser. No. 14/074,737 filed on Nov. 8, 2013, the contents
of which is hereby incorporated by reference.
FIELD OF TECHNOLOGY
[0002] The present application relates to a warp knitted fabric and
a method of manufacturing warp knitted fabrics.
BACKGROUND
[0003] In the contemporary fashion market, designers never stop
looking for new ideas in making fascinating, innovative and
versatile products to catch the eyes of their potential customers,
wherein the shine of various sorts plus the garment of
multifunctional features contributes to the product by adding
remarkably high extra value.
[0004] We have now developed a warp knit fabric that provides not
just an unusual satin-look luster and smoothness on the commercial
face of the fabric but a strong shaping power with good
anti-snagging and gripping attributes.
[0005] Snagging, as we know, is an inherent enemy of all types of
satin fabric. The reason is simply that the highly oriented yarns
of long yarn length, aligning on the surface of the fabric,
provides on one hand a high degree of mirror-like reflection of
light from the fabric surface, but on the other hand a high degree
of snagging attribute as well.
[0006] This fabric is made from a Tricot type warp knitting machine
with the typical looping movements of the guide bars and the
exclusively designed knitting parameters. It can satisfy needs from
different aspects such as the unconventional sheen and smoothness
of different sorts, anti-snagging attribute, good supporting power
with high stretching recovery and gripping with secured touch.
[0007] There exist various end uses for this type of fabric such as
shapewear, high power garments, sportswear, and intimate apparels,
strapless garments on evening gowns or wedding dresses, swimsuits
and so on.
[0008] The above description of the background is provided to aid
in understanding a warp knitted fabric, but is not admitted to
describe or constitute pertinent prior art to the warp knitted
fabric disclosed in the present application, or consider any cited
documents as material to the patentability of the claims of the
present application.
[0009] Although the warp knitted fabric disclosed in the present
application is shown and described with respect to certain
embodiments, it is obvious that equivalents and modifications will
occur to others skilled in the art upon the reading and
understanding of the specification. The present application
includes all such equivalents and modifications, and is limited
only by the scope of the claims.
SUMMARY
[0010] According to one aspect, there is provided a warp knitted
fabric including:
[0011] (a) a set of non-elastomeric yarns of substantially the same
type, fully threaded from a first guide bar at a front side of a
Tricot type warp knitting machine and knitted in a close 2.times.1
stitch pattern with the formulated effective ranges of:
[0012] I. yarn runner length, in the unit of millimeter per rack;
and
[0013] II. aggregate linear mass density of yarn(s), in the unit of
denier,
[0014] in accordance with a gauge of the knitting machine being
adopted; and
[0015] (b) a set of elastomeric yarns of substantially the same
type, fully threaded from a second guide bar at a rear side of a
Tricot type warp knitting machine and knitted in an open 1.times.1
pillar stitch pattern with the formulated effective ranges of:
[0016] I. yarn runner length, in the unit of millimeter per rack;
and
[0017] II. aggregate linear mass density of yarn(s), in the unit of
denier,
[0018] in accordance with the gauge of the knitting machine being
adopted;
[0019] (c) wherein the gripping and gummy characteristics on a
technical face of the knitted fabric comprised of the
non-elastomeric and elastomeric yarns are firmly accomplished and
quantifiably uncovered.
[0020] In one embodiment, the formulated effective ranges of the
yarn runner length, in the unit of millimeter per rack, of the
non-elastomeric yarn against the machine gauge, ranged inclusively
from 28 needles per inch through 50 needles per inch, of the Tricot
type warp knitting machine are:
[0021] (d) the yarn runner length at a high side boundary that
equals 4213.times.e.sup.-0.0344.times.(machine gauge) with rounded
off decimal; wherein "e" equals a constant number of
"2.718281828459045 . . . "; and
[0022] (e) the yarn runner length at a low side boundary that
equals 3447.times.e.sup.-0.0344.times.(machine gauge) with rounded
off decimal; and
[0023] (f) the ranges of the effective yarn runner length between
the numerical solutions, with rounded off decimal, at the high side
boundary in (d) and the low side boundary in (e).
[0024] In one embodiment, the formulated effective ranges of the
yarn runner length, in the unit of millimeter per rack, of the
elastomeric yarn, wrapped on the warp beam(s) with 50% accumulated
beaming stretch, against the machine gauges, ranged inclusively
from 28 needles per inch through 50 needles per inch, of the Tricot
type warp knitting machine are:
[0025] (g) the yarn runner length at a high side boundary that
equals 3246.times.e.sup.-0.0456.times.(machine gauge) with rounded
off decimal; and
[0026] (h) the yarn runner length at a low side boundary that
equals 2399.times.e.sup.-0.0456.times.(machine gauge) with rounded
off decimal; and
[0027] (i) the ranges of the effective yarn runner lengths between
the numerical solutions, with rounded off decimal, at the high side
boundary in (g) and the low side boundary in (h).
[0028] In one embodiment, the formulated effective ranges of the
aggregate linear mass density, in the unit of denier, of the
non-elastomeric yarn(s) against the machine gauges, ranged
inclusively from 28 needles per inch through 50 needles per inch,
of the Tricot type warp knitting machine are:
[0029] (j) the aggregate linear mass density at a high side
boundary that equals 1398.times.e.sup.-0.1.times.(machine gauge)
with rounded off decimal; and
[0030] (k) the aggregate linear mass density at a low side boundary
that equals 466.times.e.sup.-0.1.times.(machine gauge) with rounded
off decimal; and
[0031] (l) the ranges of the effective linear mass densities
between the numerical solutions, with rounded off decimal, at the
high side boundary in (j) and the low side boundary in (k).
[0032] In one embodiment, the formulated effective ranges of the
aggregate linear mass density, in the unit of denier, of the
elastomeric yarn(s) against the machine gauges, ranged inclusively
from 28 needles per inch through 50 needles per inch, of the Tricot
type warp knitting machine are:
[0033] (m) the aggregate linear mass density at a high side
boundary that equals 1463.times.e.sup.-0.0832.times.(machine gauge)
with rounded off decimal; and
[0034] (n) the aggregate linear mass density at a low side boundary
that equals 488.times.e.sup.-0.0832.times.(machine gauge) with
rounded off decimal; and
[0035] (o) the ranges of the effective linear mass densities
between the numerical solutions, with rounded off decimal, at the
high side boundary in (m) and the low side boundary in (n).
[0036] In one embodiment, the threading of the non-elastomeric
yarns is full threading, the threading of the elastomeric yarns is
full threading. The non-elastomeric yarns are nylon yarns and the
elastomeric yarns are spandex yarns.
[0037] According to another aspect, there is provided a method of
manufacturing warp knitted fabrics comprising the steps of:
[0038] (a) selecting a machine gauge of a Tricot type warp knitting
machine based on a required fabric weight in the unit of gram per
square meter; and
[0039] (b) selecting an aggregate linear mass density of a
non-elastomeric yarn with first formulated effective ranges for an
applicable yarn fineness, corresponding to the gauge of the warp
knitting machine being adopted; and
[0040] (c) selecting an aggregate linear mass density of an
elastomeric yarn with second formulated effective ranges for an
applicable yarn fineness, corresponding to the gauge of the warp
knitting machine being adopted; and
[0041] (d) selecting a runner length of the non-elastomeric yarn
with first formulated effective ranges for an applicable yarn
runner length, corresponding to the gauge of the warp knitting
machine being adopted; and
[0042] (e) selecting a runner length of the elastomeric yarn with
second formulated effective ranges for an applicable yarn runner
length, corresponding to the gauge of the warp knitting machine
being adopted; and
[0043] (f) knitting a set of the non-elastomeric yarns of
substantially the same type, fully threaded from a first guide bar
at a front side of the Tricot type warp knitting machine and
knitted in a close 2.times.1 stitch pattern; and
[0044] (g) knitting a set of the elastomeric yarns of substantially
the same type, fully threaded from a second guide bar at a rear
side of the Tricot type warp knitting machine and knitted in an
open 1.times.1 pillar stitch pattern;
[0045] (h) wherein the gripping and gummy characteristics on a
technical face of the knitted fabric comprised of the
non-elastomeric and elastomeric yarns are firmly accomplished and
quantifiably uncovered.
[0046] In one embodiment, the major processes of manufacturing the
warp knitted fabrics comprise the techniques of:
[0047] (p) establishing the first formulated effective ranges of
the aggregate linear mass density, in the unit of denier, of the
non-elastomeric yarn(s) against the machine gauges, ranged
inclusively from 28 needles per inch through 50 needles per inch,
of the Tricot type warp knitting machine where:
[0048] I. the aggregate linear mass density at a high side boundary
equals 1398.times.e.sup.-0.1.times.(machine gauge) with rounded off
decimal; and
[0049] II. the aggregate linear mass density at a low side boundary
equals 466.times.e.sup.-0.1.times.(machine gauge) with rounded off
decimal; and
[0050] III. the ranges of the effective linear mass densities are
laid between the numerical solutions, with rounded off decimal, at
the high side boundary in (p)I and the low side boundary in (p)II;
and
[0051] (q) establishing the second formulated effective ranges of
the aggregate linear mass density, in the unit of denier, of the
elastomeric yarn(s) against the machine gauges, ranged inclusively
from 28 needles per inch through 50 needles per inch, of the Tricot
type warp knitting machine where:
[0052] I. the aggregate linear mass density at a high side boundary
equals 1463.times.e.sup.-0.0832.times.(machine gauge) with rounded
off decimal; and
[0053] II. the aggregate linear mass density at a low side boundary
equals 488.times.e.sup.-0.0832.times.(machine gauge) with rounded
off decimal; and
[0054] III. the ranges of the effective linear mass densities are
laid between the numerical solutions, with rounded off decimal, at
the high side boundary in (q)I and the low side boundary in
(q)II.
[0055] In one embodiment, the major processes of manufacturing the
warp knitted fabrics comprise the techniques of:
[0056] (r) establishing the first formulated effective ranges of
the runner length, in the unit of millimeter per rack, of the
non-elastomeric yarn(s), fully threaded from a guide bar at the
front side of the Tricot type warp knitting machine, against the
machine gauges, ranged inclusively from 28 needles per inch through
50 needles per inch, where:
[0057] I. the yarn runner length at a high side boundary equals
4213.times.e.sup.-0.344.times.(machine gauge) with rounded off
decimal; and
[0058] II. the yarn runner length at a low side boundary equals
3447.times.e.sup.-0.0344.times.(machine gauge) with rounded off
decimal; and
[0059] III. the ranges of the effective yarn runner lengths are
laid between the numerical solutions, with rounded off decimal, at
the high side boundary in (r)I and the low side boundary in (r)II;
and
[0060] (s) establishing the second formulated effective ranges of
the runner length, in the unit of millimeter per rack, of the
elastomeric yarn, wrapped on the warp beam(s) with 50% accumulated
beaming stretch and fully threaded from a guide bar at the rear
side of the Tricot type warp knitting machine, against the machine
gauges, ranged inclusively from 28 needles per inch through 50
needles per inch, where:
[0061] I. the yarn runner length at a high side boundary equals
3246.times.e.sup.-0.0456.times.(machine gauge) with rounded off
decimal; and:
[0062] II. the yarn runner length at a low side boundary equals
2399.times.e.sup.-0.0456.times.(machine gauge) with rounded off
decimal; and
[0063] III. the ranges of the effective yarn runner lengths are
laid between the numerical solutions, with rounded off decimal, at
the high side boundary in (s)I and the numerical solution at the
low side boundary in (s)II.
[0064] In one embodiment, the major processes of manufacturing the
warp knitted fabrics comprise the techniques of:
[0065] (t) establishing effective ranges of fabric pulling tension
immediately after the fabric being formed on the Tricot type warp
knitting machine, also known as take-up tension, in the unit of
course per centimeter, against the machine gauges, ranged
inclusively from 28 needles per inch through 50 needles per inch,
where:
[0066] I. the take-up tension at a high side boundary equals the
numerical solution, with rounded off decimal, of the product of the
positive rational number of "1.15" and the positive integer number
of the machine gauge being adopted, added by the positive integer
number of "16"; and
[0067] II. the take-up tension at a low side boundary equals the
numerical solution, with rounded off decimal, of the product of the
positive rational number of "0.85" and the positive integer number
of the machine gauge being adopted, added by the positive integer
number of "12"; and
[0068] III. the ranges of the effective take-up tensions are laid
between the numerical solutions, with rounded off decimal, at the
high side boundary in (t)I and the low side boundary in (t)II.
[0069] In one embodiment, the knitting of the non-elastomeric and
elastomeric yarns is carried out by a Tricot type warp knitting
machine. The non-elastomeric yarns are nylon yarns and the
elastomeric yarns are spandex yarns.
[0070] In a further aspect, there is provided an article of
clothing made of the warp knitted fabric above-mentioned.
BRIEF DESCRIPTION OF THE DRAWINGS
[0071] Specific embodiments of the warp knitted fabric disclosed in
the present application will now be described by way of example
with reference to the accompanying drawings.
[0072] FIG. 1 is a lapping diagram and a chain notation of a
non-elastomeric yarn threaded from the guide bar at the front side
of the knitting machine and knitted in a close 2.times.1 stitch
loop structure according to an embodiment disclosed in the present
application.
[0073] FIG. 2 is a loop structure of the technical back of warp
knitted non-elastomeric yarns of FIG. 1.
[0074] FIG. 3 is a lapping diagram and a chain notation of an
elastomeric yarn threaded from the guide bar at the rear side of
the knitting machine and knitted in an open 1.times.1 pillar stitch
loop structure according to an embodiment disclosed in the present
application.
[0075] FIG. 4 is a loop structure of the technical back of warp
knitted elastomeric yarns of FIG. 3.
DETAILED DESCRIPTION
[0076] Reference will now be made in detail to a preferred
embodiment of the warp knitted fabric disclosed in the present
application, examples of which are also provided in the following
description. Exemplary embodiments of the warp knitted fabric
disclosed in the present application are described in detail,
although it will be apparent to those skilled in the relevant art
that some features that are not particularly important to an
understanding of the warp knitted fabric may not be shown for the
sake of clarity.
[0077] Furthermore, it should be understood that the warp knitted
fabric disclosed in the present application is not limited to the
precise embodiments described below and that various changes and
modifications thereof may be effected by one skilled in the art
without departing from the spirit or scope of the appended claims.
For example, elements and/or features of different illustrative
embodiments may be combined with each other and/or substituted for
each other within the scope of this disclosure and appended
claims.
[0078] The warp knitted fabric of the present application can be
manufactured by a Tricot type warp knitting machine with at least 2
guide bars, wherein at least one of the guide bars at the front
side of the machine is designed for lapping non-elastomeric yarns
on the knitting needles to perform the knitting action, known as a
fabric or loop formation process, and at least one of the guide
bars at the rear side of the machine is designed for lapping
elastomeric yarns on the knitting needles to perform knitting
action. The lapping motion of guide bars at front precedes that of
the guide bars at rear but the knitting action for all guide bars
takes place at once.
[0079] Considering a machine of two guide bars, the guide bar at
front, named "guide bar 1", can be made for lapping non-elastomeric
yarns on the knitting needles, and the guide bar at rear, named
"guide bar 2", can be made for lapping elastomeric yarns on the
knitting needles at a lagged period of time against that of "guide
bar 1" to perform the same knitting action all together. Yarns can
be threaded through the guide needles of the two guide bars and
knitted in different stitch patterns to form the desired knitted
fabric.
[0080] According to an embodiment of the present application, a
non-elastomeric yarn 10 may be threaded through the guide needles
of "guide bar 1" and knitted in a close 2.times.1 stitch pattern.
FIG. 1 shows a lapping diagram and a chain notation of the
non-elastomeric yarn 10 threaded through the guide needles of
"guide bar 1" and knitted in a close 2.times.1 stitch pattern. The
non-elastomeric yarn 10 may be nylon, or any other suitable
non-elastomeric yarns. A loop structure of the technical back of
warp knitted non-elastomeric yarns 10 is shown in FIG. 2.
[0081] According to an embodiment of the present application, an
elastomeric yarn 20 may be threaded through the guide needles of
"guide bar 2" and knitted in an open 1.times.1 pillar stitch
pattern. FIG. 3 shows a lapping diagram and a chain notation of the
elastomeric yarn 20 threaded through the guide needles of "guide
bar 2" and knitted in an open 1.times.1 pillar stitch pattern. The
elastomeric yarn 20 may be spandex, or any other elastic yarn
having substantially the same characteristics of spandex. A loop
structure of the technical back of warp knitted elastomeric yarns
20 is shown in FIG. 4.
[0082] According to an embodiment of the present application, the
method of threading for both non-elastomeric and elastomeric yarns
10, 20 is full threading. The term "full threading" can be
considered as one of the threading methods for the guide bar(s)
that allows all knitting needles of the machine to lap with a yarn
of a particular type from the corresponding guide needles of one or
more threaded guide bars.
[0083] According to an embodiment of the present application, there
may be formulated effective ranges of yarn runner length, in the
unit of millimeter per rack, of the non-elastomeric and elastomeric
yarns 10, 20 against the machine gauge, ranged inclusively from 28
needles per inch through 50 needles per inch, of the Tricot type
warp knitting machine.
[0084] According to an embodiment of the present application, there
may be formulated effective ranges of aggregate linear mass
density, in the unit denier, of the non-elastomeric and elastomeric
yarns 10, 20 against the machine gauge, ranged inclusively from 28
needles per inch through 50 needles per inch, of the Tricot type
warp knitting machine.
[0085] The warp knitted fabric may be composed of the
non-elastomeric yarns 10 such as nylon or any other suitable
non-elastomeric yarn of proper types and fineness, and elastomeric
yarns 20 such as spandex of different elasticity and fineness. By
using a Tricot type warp knitting machine, one can produce high-end
warp knitted fabrics for garment products meeting different
elasticity and weight requirements for both men and women.
[0086] The warp knitted fabric of the present application is
suitable for many types of high-end underwear and clothing such as
panties, brassieres, shapewears, bodysuits, sportswear, strapeless
evening gowns or wedding dresses, swimsuits and so on.
[0087] To manufacture the warp knitted fabrics of the present
application, an operator may need to follow the steps of: [0088] 1.
selecting an appropriate machine gauge of the Tricot type warp
knitting machine based on the required fabric weight in the unit of
gram per square meter (for example one may use the machine gauge of
40 needles per inch to knit a fabric of 154 gram-per-square meter
weight); and [0089] 2. selecting an appropriate linear mass density
of the non-elastomeric yarn 10 with the formulated effective ranges
for an applicable yarn fineness, corresponding to the gauge of the
warp knitting machine being adopted (for example, one may use 20
denier non-elastomeric nylon yarn if the machine gauge is 40); and
[0090] 3. selecting an appropriate linear mass density of the
elastomeric yarn 20 with the formulated effective ranges for an
applicable yarn fineness, corresponding to the gauge of the warp
knitting machine being adopted (for example, one may use 40 denier
elastomeric spandex yarn if the machine gauge is 40); and [0091] 4.
selecting an appropriate runner length of the non-elastomeric yarn
10 with the formulated effective ranges for an applicable yarn
runner length, corresponding to the gauge of the warp knitting
machine being adopted (for example, one may use a runner length of
1030 mm per rack with a 20-denier non-elastomeric nylon yarn if the
machine gauge is 40); and [0092] 5. selecting an appropriate runner
length of the elastomeric yarn 20 with the formulated effective
ranges for an applicable yarn runner length, corresponding to the
gauge of the warp knitting machine being adopted (for example, one
may use a runner length of 480 mm per rack with a 40-denier
elastomeric spandex yarn of 50% accumulated beaming stretch if the
machine gauge is 40); and [0093] 6. knitting a set of
non-elastomeric yarns 10 of substantially the same type, fully
threaded from a guide bar at the front side of the Tricot type warp
knitting machine and knitted in a close 2.times.1 stitch pattern;
and [0094] 7. knitting a set of elastomeric yarns 20 of
substantially the same type, fully threaded from a guide bar at the
rear side of the Tricot type warp knitting machine and knitted in
an open 1.times.1 pillar stitch pattern.
[0095] To manufacture the warp knitted fabrics of the present
application, an operator may need to apply the techniques of:
[0096] 1. establishing the effective ranges of the aggregate linear
mass density, in the unit of denier, of the non-elastomeric yarn(s)
10 against the machine gauges, ranged inclusively from 28 needles
per inch through 50 needles per inch, of the Tricot type warp
knitting machine where: [0097] (a) the aggregate linear mass
density at a high side boundary equals
1398.times.e.sup.-0.1.times.(machine gauge) with rounded off
decimal; and [0098] (b) the aggregate linear mass density at a low
side boundary equals 466.times.e.sup.-0.1.times.(machine gauge)
with rounded off decimal; and [0099] (c) the ranges of the
effective linear mass densities are laid between the numerical
solutions, with rounded off decimal, at the high side boundary in
1(a) and the low side boundary in 1(b). (For example, one may use a
20-denier non-elastomeric nylon yarn if the machine gauge is ranged
from 36 through 40 inclusively); and [0100] 2. establishing the
effective ranges of the aggregate linear mass density, in the unit
of denier, of the elastomeric yarn(s) against the machine gauges,
ranged inclusively from 28 needles per inch through 50 needles per
inch, of the Tricot type warp knitting machine where: [0101] (a)
the aggregate linear mass density at a high side boundary equals
1463.times.e.sup.-0.0832.times.(machine gauge) with rounded off
decimal; and [0102] (b) the aggregate linear mass density at a low
side boundary equals 488.times.e.sup.-0.0832.times.(machine gauge)
with rounded off decimal; and [0103] (c) the ranges of the
effective linear mass densities are laid between the numerical
solutions, with rounded off decimal, at the high side boundary in
2(a) and the low side boundary in 2(b). (For example, one may use a
40-denier elastomeric spandex yarn if the machine gauge is ranged
from 36 through 40 inclusively.)
[0104] To manufacture the warp knitted fabrics of the present
application, an operator may need to apply the techniques of:
[0105] 1. establishing the effective ranges of the runner lengths,
in the unit of millimeter per rack, of the non-elastomeric yarn(s),
fully threaded from a guide bar at the front side of the Tricot
type warp knitting machine, against the machine gauges, ranged
inclusively from 28 needles per inch through 50 needles per inch,
where: [0106] (a) the yarn runner length at a high side boundary
equals 4213.times.e.sup.-0.0344.times.(machine gauge) with rounded
off decimal; wherein "e" equals a constant number of
"2.718281828459045 . . . "; and [0107] (b) the yarn runner length
at a low side boundary equals
3447.times.e.sup.-0.0344.times.(machine gauge) with rounded off
decimal; and [0108] (c) the ranges of the effective yarn runner
length are laid between the numerical solutions, with rounded off
decimal, at the high side boundary in 1(a) and the low side
boundary in 1(b). (For example, one may use a runner length of 1030
mm per rack with a 20-denier non-elastomeric nylon yarn if the
machine gauge is ranged from 36 through 40 inclusively); and [0109]
2. establishing the effective ranges of the runner lengths, in the
unit of millimeter per rack, of the elastomeric yarn, wrapped on
the warp beam(s) with 50% accumulated beaming stretch and fully
threaded from a guide bar at the rear side of the Tricot type warp
knitting machine, against the machine gauges, ranged inclusively
from 28 needles per inch through 50 needles per inch, where: [0110]
(a) the yarn runner length at a high side boundary equals
3246.times.e.sup.0.0456.times.(machine gauge) with rounded off
decimal; and [0111] (b) the yarn runner length at a low side
boundary equals 2399.times.e.sup.-0.0456.times.(machine gauge) with
rounded off decimal; and [0112] (c) the ranges of the effective
yarn runner lengths are laid between the numerical solutions, with
rounded off decimal, at the high side boundary in 2(a) and the low
side boundary in 2(b). (For example, one may use a runner length of
480 mm per rack with a 40-denier elastomeric spandex yarn of 50%
accumulated beaming stretch if the machine gauge is ranged from 36
through 40 inclusively).
[0113] To manufacture the warp knitted fabrics of the present
application, an operator may need to apply the techniques of:
[0114] 1. establishing the effective ranges of the fabric pulling
tension immediately after the fabric being formed on the Tricot
type warp knitting machine, also known as the take-up tension, in
the unit of course per centimeter, against the machine gauges,
ranged inclusively from 28 needles per inch through 50 needles per
inch, where: [0115] (a) the take-up tension at the high side
boundary equals the numerical solution, with rounded off decimal,
of the product of the positive rational number of "1.15" and the
positive integer number of the machine gauge being adopted, added
by the positive integer number of "16"; and [0116] (b) the take-up
tension at the low side boundary equals the numerical solution,
with rounded off decimal, of the product of the positive rational
number of "0.85" and the positive integer number of the machine
gauge being adopted, added by the positive integer number of "12";
and [0117] (c) the ranges of the effective take-up tensions are
laid between the numerical solutions, with rounded off decimal, at
the high side boundary in 1(a) and the low side boundary in 1(b)
(for example, one may use a pulling tension of 52 courses per inch
if the machine gauge is ranged from 36 through 40 inclusively).
[0118] After the knitting process, other subsequent processes such
as degreasing process, thermal setting process, and dyeing process
can be carried out.
[0119] The examples of manufacturing the warp knitted fabrics of
the present application with an indication of basic knitting
conditions and physical characteristics of the finish products are
shown as below.
Example 1
[0120] Fabric Code: RS1231S
[0121] Color: Purple
[0122] Basic Fabric Parameters: [0123] Non-elastomeric yarns: nylon
yarn (8 deniers, 5 filaments, round bright type luster) [0124]
Elastomeric yarns: spandex yarn (20 deniers, clear type luster)
[0125] Proportion of non-elastomeric yarn (nylon): 59% [0126]
Proportion of elastomeric yarn (spandex): 41% [0127] Weight of the
finished product: 105 (gram per square meter) [0128] Warp density
of the finished product: 88 (courses per centimeter) [0129] Weft
density of the finished product: 47 (wales per centimeter)
[0130] Physical Characteristic Parameters of Finished Product:
[0131] (Testing method LTD-03, 7.5 pounds of stretch force) [0132]
Lengthwise stretch ratio: 238% (at 7.5 pounds of stretch force)
[0133] Widthwise stretch ratio: 125% (at 7.5 pounds of stretch
force) [0134] Lengthwise elastic modulus: 0.34 pound (at 40%
stretch ratio) [0135] Widthwise elastic modulus: 0.46 pounds (at
40% stretch ratio) [0136] Lengthwise elastic modulus: 0.65 pounds
(at 60% stretch ratio) [0137] Widthwise elastic modulus: 0.97
pounds (at 60% stretch ratio) [0138] Lengthwise stretching
recovery: 93% [0139] Widthwise stretching recovery: 96% [0140]
Lengthwise snagging: 2.5 [0141] Widthwise snagging: 3.5
[0142] Physical Characteristic Parameters of Finished Product:
[0143] (Testing method PTL gripping tester, fabric being pulled at
a constant speed of 10 centimeters per minute under the weight of
200 grams) [0144] Lengthwise gripping reading on the technical face
of the fabric: 727 gram-force [0145] Widthwise gripping reading on
the technical face of the fabric: 687 gram-force [0146] Lengthwise
gripping reading on the technical back of the fabric: 55 gram-force
[0147] Widthwise gripping reading on the technical back of the
fabric: 62 gram-force
[0148] Basic Knitting Parameters: [0149] Type of knitting machine:
44 gauges, 2 guide bars, Tricot type warp-knitting machine (HKS
2-3E) [0150] Total number of yarns of the first guide bar: 5712
[0151] Total number of yarns of the second guide bar: 5700 [0152]
Runner length of the first guide bar: 800 mm per rack [0153] Runner
length of the second guide bar: 370 mm per rack (at 50% beaming
stretch) [0154] Machine take-up tension: 64 courses per
centimeter
Example 2
[0155] Fabric Code: RS1247S
[0156] Color: White
[0157] Basic Parameters: [0158] Non-elastomeric yarns: nylon yarn
(10 deniers, 10 filaments, round bright type luster) [0159]
Elastomeric yarns: spandex yarn (20 deniers, clear type luster)
[0160] Proportion of non-elastomeric yarn (nylon): 59% [0161]
Proportion of elastomeric yarn (spandex): 41% [0162] Weight of the
finished product: 113 (gram per square meter) [0163] Warp density
of the finished product: 79 (courses per centimeter) [0164] Weft
density of the finished product: 46 (wales per centimeter)
[0165] Physical Characteristic Parameters of Finished Product:
[0166] (Testing method LTD-03, 7.5 pounds of stretch force) [0167]
Lengthwise stretch ratio: 212% (at 7.5 pounds of stretch force)
[0168] Widthwise stretch ratio: 125% (at 7.5 pounds of stretch
force) [0169] Lengthwise elastic modulus: 0.43 pound (at 40%
stretch ratio) [0170] Widthwise elastic modulus: 0.43 pounds (at
40% stretch ratio) [0171] Lengthwise elastic modulus: 0.73 pounds
(at 60% stretch ratio) [0172] Widthwise elastic modulus: 0.94
pounds (at 60% stretch ratio) [0173] Lengthwise stretching
recovery: 95% [0174] Widthwise stretching recovery: 94% [0175]
Lengthwise snagging: 2.5 [0176] Widthwise snagging: 2.0
[0177] Physical Characteristic Parameters of Finished Product:
[0178] (Testing method PTL gripping tester, fabric being pulled at
a constant speed of 10 centimeters per minute under the weight of
200 grams) [0179] Lengthwise gripping reading on the technical face
of the fabric: 760 gram-force [0180] Widthwise gripping reading on
the technical face of the fabric: 660 gram-force [0181] Lengthwise
gripping reading on the technical back of the fabric: 65 gram-force
[0182] Widthwise gripping reading on the technical back of the
fabric: 50 gram-force
[0183] Basic Knitting Parameters: [0184] Type of knitting machine:
44 gauges, 2 guide bars, Tricot type warp-knitting machine (HKS
2-3E) [0185] Total number of yarns of the first guide bar: 5712
[0186] Total number of yarns of the second guide bar: 5700 [0187]
Runner length of the first guide bar: 820 mm per rack [0188] Runner
length of the second guide bar: 400 mm per rack (at 50% beaming
stretch) [0189] Machine take-up tension: 58 courses per
centimeter
Example 3
[0190] Fabric Code: RS1041SE
[0191] Color: Nude
[0192] Basic Parameters: [0193] Non-elastomeric yarns: nylon yarn
(10 deniers, 5 filaments, round bright type luster) [0194]
Elastomeric yarns: spandex yarn (20 deniers, clear type luster)
[0195] Proportion of non-elastomeric yarn (nylon): 62% [0196]
Proportion of elastomeric yarn (spandex): 38% [0197] Weight of the
finished product: 85 (gram per square meter) [0198] Warp density of
the finished product: 69 (courses per centimeter) [0199] Weft
density of the finished product: 36 (wales per centimeter)
[0200] Physical Characteristic Parameters of Finished Product:
[0201] (Testing method LTD-03, 7.5 pounds of stretch force) [0202]
Lengthwise stretch ratio: 211% (at 7.5 pounds of stretch force)
[0203] Widthwise stretch ratio: 103% (at 7.5 pounds of stretch
force) [0204] Lengthwise elastic modulus: 0.37 pound (at 40%
stretch ratio) [0205] Widthwise elastic modulus: 0.80 pounds (at
40% stretch ratio) [0206] Lengthwise elastic modulus: 0.57 pounds
(at 60% stretch ratio) [0207] Widthwise elastic modulus: 1.54
pounds (at 60% stretch ratio) [0208] Lengthwise stretching
recovery: 97% [0209] Widthwise stretching recovery: 95% [0210]
Lengthwise snagging: 2.5 [0211] Widthwise snagging: 3.0
[0212] Physical Characteristic Parameters of Finished Product:
[0213] (Testing method PTL gripping tester, fabric being pulled at
a constant speed of 10 centimeters per minute under the weight of
200 grams) [0214] Lengthwise gripping reading on the technical face
of the fabric: 495 gram-force [0215] Widthwise gripping reading on
the technical face of the fabric: 470 gram-force [0216] Lengthwise
gripping reading on the technical back of the fabric: 158
gram-force [0217] Widthwise gripping reading on the technical back
of the fabric: 128 gram-force
[0218] Basic Knitting Parameters: [0219] Type of knitting machine:
40 gauges, 2 guide bars, Tricot type warp-knitting machine (HKS
2-3E) [0220] Total number of yarns of the first guide bar: 5010
[0221] Total number of yarns of the second guide bar: 4992 [0222]
Runner length of the first guide bar: 920 mm per rack [0223] Runner
length of the second guide bar: 500 mm per rack (at 50% beaming
stretch) [0224] Machine take-up tension: 52 courses per
centimeter
Example 4
[0225] Fabric Code: RS1007S
[0226] Color: Purple
[0227] Basic Parameters: [0228] Non-elastomeric yarns: nylon yarn
(20 deniers, 24 filaments, bright trilobal type luster) [0229]
Elastomeric yarns: spandex yarn (40 deniers, clear type luster)
[0230] Proportion of non-elastomeric yarn (nylon): 65% [0231]
Proportion of elastomeric yarn (spandex): 35% [0232] Weight of the
finished product: 154 (gram per square meter) [0233] Warp density
of the finished product: 62 (courses per centimeter) [0234] Weft
density of the finished product: 37 (wales per centimeter)
[0235] Physical Characteristic Parameters of Finished Product:
[0236] (Testing method LTD-03, 7.5 pounds of stretch force) [0237]
Lengthwise stretch ratio: 169% (at 7.5 pounds of stretch force)
[0238] Widthwise stretch ratio: 97% (at 7.5 pounds of stretch
force) [0239] Lengthwise elastic modulus: 0.65 pound (at 40%
stretch ratio) [0240] Widthwise elastic modulus: 0.58 pounds (at
40% stretch ratio) [0241] Lengthwise elastic modulus: 1.08 pounds
(at 60% stretch ratio) [0242] Widthwise elastic modulus: 1.26
pounds (at 60% stretch ratio) [0243] Lengthwise stretching
recovery: 94% [0244] Widthwise stretching recovery: 95% [0245]
Lengthwise snagging: 4.5 [0246] Widthwise snagging: 4.0
[0247] Physical Characteristic Parameters of Finished Product:
[0248] (Testing method PTL gripping tester, fabric being pulled at
a constant speed of 10 centimeters per minute under the weight of
200 grams) [0249] Lengthwise gripping reading on the technical face
of the fabric: 500 gram-force [0250] Widthwise gripping reading on
the technical face of the fabric: 500 gram-force [0251] Lengthwise
gripping reading on the technical back of the fabric: 198
gram-force [0252] Widthwise gripping reading on the technical back
of the fabric: 188 gram-force
[0253] Basic Knitting Parameters: [0254] Type of knitting machine:
40 gauges, 2 guide bars, Tricot type warp-knitting machine (HKS
2-3E) [0255] Total number of yarns of the first guide bar: 5010
[0256] Total number of yarns of the second guide bar: 4992 [0257]
Runner length of the first guide bar: 980 mm per rack [0258] Runner
length of the second guide bar: 420 mm per rack (at 50% beaming
stretch) [0259] Machine take-up tension: 54 courses per
centimeter
Example 5
[0260] Fabric Code: RS1221S
[0261] Color: Purple
[0262] Basic Parameters: [0263] Non-elastomeric yarns: nylon yarn
(20 deniers, 34 filaments, round bright type luster) [0264]
Elastomeric yarns: spandex yarn (40 deniers, clear type luster)
[0265] Proportion of non-elastomeric yarn (nylon): 65% [0266]
Proportion of elastomeric yarn (spandex): 35% [0267] Weight of the
finished product: 173 (gram per square meter) [0268] Warp density
of the finished product: 67 (courses per centimeter) [0269] Weft
density of the finished product: 37 (wales per centimeter)
[0270] Physical Characteristic Parameters of Finished Product:
[0271] (Testing method LTD-03, 7.5 pounds of stretch force) [0272]
Lengthwise stretch ratio: 179% (at 7.5 pounds of stretch force)
[0273] Widthwise stretch ratio: 108% (at 7.5 pounds of stretch
force) [0274] Lengthwise elastic modulus: 0.53 pound (at 40%
stretch ratio) [0275] Widthwise elastic modulus: 0.48 pounds (at
40% stretch ratio) [0276] Lengthwise elastic modulus: 0.92 pounds
(at 60% stretch ratio) [0277] Widthwise elastic modulus: 0.96
pounds (at 60% stretch ratio) [0278] Lengthwise stretching
recovery: 93% [0279] Widthwise stretching recovery: 93% [0280]
Lengthwise snagging: 2.0 [0281] Widthwise snagging: 2.0
[0282] Physical Characteristic Parameters of Finished Product:
[0283] (Testing method PTL gripping tester, fabric being pulled at
a constant speed of 10 centimeters per minute under the weight of
200 grams) [0284] Lengthwise gripping reading on the technical face
of the fabric: 765 gram-force [0285] Widthwise gripping reading on
the technical face of the fabric: 653 gram-force [0286] Lengthwise
gripping reading on the technical back of the fabric: 315
gram-force [0287] Widthwise gripping reading on the technical back
of the fabric: 310 gram-force
[0288] Basic Knitting Parameters: [0289] Type of knitting machine:
40 gauges, 2 guide bars, Tricot type warp-knitting machine (HKS
2-3E) [0290] Total number of yarns of the first guide bar: 5010
[0291] Total number of yarns of the second guide bar: 4992 [0292]
Runner length of the first guide bar: 980 mm per rack [0293] Runner
length of the second guide bar: 420 mm per rack (at 50% beaming
stretch) [0294] Machine take-up tension: 54 courses per
centimeter
Example 6
[0295] Fabric Code: RS1249S
[0296] Color: Purple
[0297] Basic Parameters: [0298] Non-elastomeric yarns: nylon yarn
(12 deniers, 6 filaments, round bright type luster) [0299]
Elastomeric yarns: spandex yarn (30 deniers, clear type luster)
[0300] Proportion of non-elastomeric yarn (nylon): 58% [0301]
Proportion of elastomeric yarn (spandex): 42% [0302] Weight of the
finished product: 130 (gram per square meter) [0303] Warp density
of the finished product: 77 (courses per centimeter) [0304] Weft
density of the finished product: 39 (wales per centimeter)
[0305] Physical Characteristic Parameters of Finished Product:
[0306] (Testing method LTD-03, 7.5 pounds of stretch force) [0307]
Lengthwise stretch ratio: 227% (at 7.5 pounds of stretch force)
[0308] Widthwise stretch ratio: 106% (at 7.5 pounds of stretch
force) [0309] Lengthwise elastic modulus: 0.50 pound (at 40%
stretch ratio) [0310] Widthwise elastic modulus: 0.80 pounds (at
40% stretch ratio) [0311] Lengthwise elastic modulus: 0.83 pounds
(at 60% stretch ratio) [0312] Widthwise elastic modulus: 1.68
pounds (at 60% stretch ratio) [0313] Lengthwise stretching
recovery: 96% [0314] Widthwise stretching recovery: 95% [0315]
Lengthwise snagging: 2.0 [0316] Widthwise snagging: 2.0
[0317] Physical Characteristic Parameters of Finished Product:
[0318] (Testing method PTL gripping tester, fabric being pulled at
a constant speed of 10 centimeters per minute under the weight of
200 grams) [0319] Lengthwise gripping reading on the technical face
of the fabric: 658 gram-force [0320] Widthwise gripping reading on
the technical face of the fabric: 585 gram-force [0321] Lengthwise
gripping reading on the technical back of the fabric: 88 gram-force
[0322] Widthwise gripping reading on the technical back of the
fabric: 50 gram-force
[0323] Basic Knitting Parameters: [0324] Type of knitting machine:
40 gauges, 2 guide bars, Tricot type warp-knitting machine (HKS
2-3E) [0325] Total number of yarns of the first guide bar: 5010
[0326] Total number of yarns of the second guide bar: 4992 [0327]
Runner length of the first guide bar: 900 mm per rack [0328] Runner
length of the second guide bar: 430 mm per rack (at 50% beaming
stretch) [0329] Machine take-up tension: 54 courses per
centimeter
Example 7
[0330] Fabric Code: RS1275S
[0331] Color: Black
[0332] Basic Parameters: [0333] Non-elastomeric yarns: nylon yarn
(30 deniers, 34 filaments, round bright type luster) [0334]
Elastomeric yarns: spandex yarn (55 deniers, clear type luster)
[0335] Proportion of non-elastomeric yarn (nylon): 61% [0336]
Proportion of elastomeric yarn (spandex): 39% [0337] Weight of the
finished product: 210 (gram per square meter) [0338] Warp density
of the finished product: 56 (courses per centimeter) [0339] Weft
density of the finished product: 28 (wales per centimeter)
[0340] Physical Characteristic Parameters of Finished Product:
[0341] (Testing method LTD-03, 7.5 pounds of stretch force) [0342]
Lengthwise stretch ratio: 161% (at 7.5 pounds of stretch force)
[0343] Widthwise stretch ratio: 88% (at 7.5 pounds of stretch
force) [0344] Lengthwise elastic modulus: 0.97 pound (at 40%
stretch ratio) [0345] Widthwise elastic modulus: 0.90 pounds (at
40% stretch ratio) [0346] Lengthwise elastic modulus: 1.55 pounds
(at 60% stretch ratio) [0347] Widthwise elastic modulus: 1.86
pounds (at 60% stretch ratio) [0348] Lengthwise stretching
recovery: 95% [0349] Widthwise stretching recovery: 97% [0350]
Lengthwise snagging: 2.5 [0351] Widthwise snagging: 2.5
[0352] Physical Characteristic Parameters of Finished Product:
[0353] (Testing method PTL gripping tester, fabric being pulled at
a constant speed of 10 centimeters per minute under the weight of
200 grams) [0354] Lengthwise gripping reading on the technical face
of the fabric: 635 gram-force [0355] Widthwise gripping reading on
the technical face of the fabric: 610 gram-force [0356] Lengthwise
gripping reading on the technical back of the fabric: 200
gram-force [0357] Widthwise gripping reading on the technical back
of the fabric: 175 gram-force
[0358] Basic Knitting Parameters: [0359] Type of knitting machine:
32 gauges, 2 guide bars, Tricot type warp-knitting machine (HKS
2-3E) [0360] Total number of yarns of the first guide bar: 4032
[0361] Total number of yarns of the second guide bar: 4020 [0362]
Runner length of the first guide bar: 1200 mm per rack [0363]
Runner length of the second guide bar: 650 mm per rack (at 50%
beaming stretch) [0364] Machine take-up tension: 48 courses per
centimeter
Example 8
[0365] Fabric Code: RS1277S
[0366] Color: Black
[0367] Basic Parameters: [0368] Non-elastomeric yarns: nylon yarn
(40 deniers, 34 filaments, dull type luster) [0369] Elastomeric
yarns: spandex yarn (70 deniers, clear type luster) [0370]
Proportion of non-elastomeric yarn (nylon): 68% [0371] Proportion
of elastomeric yarn (spandex): 32% [0372] Weight of the finished
product: 249 (gram per square meter) [0373] Warp density of the
finished product: 47 (courses per centimeter) [0374] Weft density
of the finished product: 27 (wales per centimeter)
[0375] Physical Characteristic Parameters of Finished Product:
[0376] (Testing method LTD-03, 7.5 pounds of stretch force) [0377]
Lengthwise stretch ratio: 96% (at 7.5 pounds of stretch force)
[0378] Widthwise stretch ratio: 70% (at 7.5 pounds of stretch
force) [0379] Lengthwise elastic modulus: 2.13 pound (at 40%
stretch ratio) [0380] Widthwise elastic modulus: 1.74 pounds (at
40% stretch ratio) [0381] Lengthwise elastic modulus: 3.51 pounds
(at 60% stretch ratio) [0382] Widthwise elastic modulus: 4.55
pounds (at 60% stretch ratio) [0383] Lengthwise stretching
recovery: 96% [0384] Widthwise stretching recovery: 95% [0385]
Lengthwise snagging: 3.5 [0386] Widthwise snagging: 3.5
[0387] Physical Characteristic Parameters of Finished Product:
[0388] (Testing method PTL gripping tester, fabric being pulled at
a constant speed of 10 centimeters per minute under the weight of
200 grams) [0389] Lengthwise gripping reading on the technical face
of the fabric: 507 gram-force [0390] Widthwise gripping reading on
the technical face of the fabric: 575 gram-force [0391] Lengthwise
gripping reading on the technical back of the fabric: 142
gram-force [0392] Widthwise gripping reading on the technical back
of the fabric: 180 gram-force
[0393] Basic Knitting Parameters: [0394] Type of knitting machine:
32 gauges, 2 guide bars, Tricot type warp-knitting machine (HKS
2-3E) [0395] Total number of yarns of the first guide bar: 4032
[0396] Total number of yarns of the second guide bar: 4020 [0397]
Runner length of the first guide bar: 1300 mm per rack [0398]
Runner length of the second guide bar: 700 mm per rack (at 50%
beaming stretch) [0399] Machine take-up tension: 46 courses per
centimeter
[0400] While the warp knitted fabric and the method of
manufacturing the same disclosed in the present application have
been shown and described with particular references to a number of
preferred embodiments thereof, it should be noted that various
other changes or modifications may be made without departing from
the scope of the appending claims.
* * * * *