JPH01306641A - Union high-density woven fabric - Google Patents

Abstract

PURPOSE:To obtain the title soft woven fabric useful for coat, etc., having waterproofness and water vapor transmission, by using onion yarn comprising multifilament yarn of synthetic fiber, with contracting function, having open loops and closed loops on the surface as warp, etc., and spun yarn as the other weft, etc. CONSTITUTION:Union combined filament yarn comprising multifilament yarn of synthetic fiber (e.g. polyester filament) with contracting function, having open loops and closed loops on the surface is used as warp (or weft) of woven fabric and spun yarn (e.g. polyester spun yarn) is utilized as the other weft (or warp) and yarn having 2,000-3,500 sum of cover factor of the warp and the weft is woven in a plain textile weave) by a repier loom to give the aimed union high-density woven fabric. Union combined filament yarn having >=10% boiling water shrinkage factor is preferably used as the onion combined filament yarn.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a high-density interwoven fabric that is soft and has excellent functionality by interweaving a synthetic fiber multifilament yarn and a spun yarn.

(Prior Art) When textiles are used for clothing, they are required to have functionality such as waterproofness and moisture permeability to the extent that they can be worn with coats and blousons. In addition, even higher levels of waterproofness and moisture permeability are required for sports such as skiing, marine sports, and athletics. In order to achieve this functionality, it has been common practice to impregnate or apply foamed polyurethane resin, acrylic resin, etc. on the back side of the fabric, or to attach it in the form of a film.

In addition, in recent years, the manufacturing technology of synthetic multifilaments has been remarkable, and composite spinning technology has made it possible to manufacture nylon/polyester composite yarns, which are representative of split-fiber type fibers. As shown in Japanese Patent Publication No. 11764.7, there is a method of shrinking the textile structure by chemical treatment to increase the density of the textile structure, as well as Japanese Patent Application Laid-Open No. 59-204941 and Japanese Patent Application Publication No. 60-39438.
As shown in the publication, a high-density fabric is provided by a method in which a fabric made of a mixed yarn of a high-shrinkage yarn and a low-shrinkage yarn is shrunk in a dyeing process to increase the density.

In addition, as for textiles using spun yarn, a typical example is a high-density textile that uses twin yarns of cotton yarn and has a high density on the loom as much as possible, mainly on shuttle looms. ing.

(Problems to be Solved by the Invention) In order to impart functionality such as waterproofness and moisture permeability to textiles, the method of laminating resin or film to the front (back) of textiles has excellent functionality, but it is difficult to This damages the original soft texture of the fabric, and due to the nature of the laminating material,
The fabric has a drawback that leaves it feeling silly. In order to cover this decision, in fabrics made of synthetic multifilament yarns, high-shrinkage yarns and low-shrinkage yarns are combined to achieve high density due to shrinkage behavior during the dyeing process. In this case,
Spinning involves fiber splitting in composite spinning using different polymers, splitting type ultra-fine yarn, high-density weaving by weaving with composite yarn using interlace-type blending technology of high-shrinkage yarn and low-shrinkage yarn, and further dyeing process. It is obtained by shrinking it into a dense fabric. However, all of these still have the feel of synthetic multifilament fibers, and although they are intended to be spun-like by interlacing mixed fibers, both the texture and appearance feel modern.

On the other hand, high-density fabrics using spun yarn have an excellent texture, but due to the fuzz present in the yarn, the higher the warp density, the higher the density of the warp, and even with improvements in weaving technology, there is still a limit. There is. In particular, the longer the fibers are, the longer the fluff becomes, making high-density weaving difficult with yarns made by worsted or hemp spinning. Even with high-density fabrics using spun cotton yarn, there are limits to high-density weaving using single yarns due to the condition of fluff, yarn unevenness, and yarn strength. There is a problem that it is not possible to reduce the basis weight.

Fabrics that use spun yarn for the warp and weft have a nice texture and a natural appearance, and it goes without saying that natural fiber fabrics are the mainstream. However, it is not so easy to obtain high-density fabrics with functionality such as moisture permeability and waterproofness when using fabrics mainly made of natural fibers and spun yarns. Particularly, as has recently been the case, when thin fabrics with fine counts are required, weaving with single yarns is necessary, and high-density JA weaving to obtain fabrics with velcro properties is even more difficult and not easy.

The purpose of the present invention is to focus on the above-mentioned conventional problems, and to provide a high-density fabric that is difficult to weave using spun yarn, without impairing the soft texture and soft appearance characteristics of spun yarn. It is something.

The structure of the present invention that achieves the above object uses an interlaced mixed fiber yarn having an intermediate loop and a closed loop on the yarn surface, which is made of a synthetic fiber multifilament yarn having a contraction function in the warp (or weft) of the fabric, and This is a mixed-weave high-density fabric characterized by using spun yarn for the weft (or warp) and having a total cover factor of the warp and weft of 2000 to 3500.

Due to the above structure, the fluff of the spun yarn on the surface of the fabric, the loops between the multifilaments, and the closed loops are mixed together, creating an unprecedented texture and the appearance of the span. I found that I was able to make the most of it without being discouraged.

Here, we will explain an interlaced mixed fiber yarn having interlaced loops and closed loops on the surface of the yarn, which is made of synthetic fiber multifilament yarn having a contraction function in the warp (or weft) of the fabric.

The above-mentioned interlaced blend yarn is preferably a latent loop yarn. Furthermore, the latent loop yarn is preferably a composite yarn with a core-sheath structure for high-density fabrics, and the single yarn denier of the synthetic fiber multifilament yarn used on the 8th side is too large.
It is better to use synthetic fiber multifilament yarn with a small single yarn denier for use in banknotes. High-density woven fabrics have a large binding force on the threads, so they have high rigidity and a hard texture. Therefore, in order to solve these problems, it is necessary to add 0.0% to the monetary system.
It is preferable to use ultrafine threads of 1 to 2.5 d. In addition, it is preferable to use 0.3 to 15 d on the 8 side,
This provides volume and anti-elasticity in the fabric.

Here is an explanation about latent loop yarn.

The figure is a schematic diagram showing an example of a method for manufacturing a latent loop yarn applied to the present invention.

As shown in the figure, the yarn 2 unwound from the core yarn package 1 is supplied via a first supply roller 3 to a processing device 4 that forms a compressed air turbulent area.

On the other hand, the yarn 6 supplied from the sheath yarn package 5 is supplied to the processing device 4 via the second supply roller 7 . These threads 2, 6 are fed simultaneously to the processing device 4 via suitable guides 8, 9. Note that it is also possible to directly supply the processing device 4 from the guide 8 .

Both yarns 2 and 6 that have passed through the compressed air turbulence area generated in the processing device 4 become a loop yarn 10, pass through a first take-up roller 11 and a second take-up roller 12, and are further passed through a take-up device 13. and is wound up into a package 14. Note that the yarn is tensioned between the first take-off roller 11 and the second take-off roller 12.

This tension is preferable because it is effective in eliminating large loops and curls in the loop yarn, and does not prevent the formation of loops and curls that become apparent during heat treatment. If this tension is too small, the effect of eliminating loops and curls will be small, and if it is too large, even the minute loops of the loop yarn formed in the pressure air turbulence area will be erased, which is not preferable.

It is preferable to eliminate loops to such an extent that the presence of loops on the yarn surface is hardly visible to the naked eye (the presence of minute loops can be seen with a magnifying glass or microscope C).

The method for producing the latent loop yarn described above is preferably carried out under the following conditions.

The core yarn has a boiling water shrinkage rate of 10% or more and the single fiber PL fineness is 0.
．． A multifilament yarn having a diameter of 3 to 15 d is used, and a multifilament yarn having a single fiber fineness of 0.1 to 2.5 d and having a boiling water shrinkage rate difference of at least 5% from the core yarn is used as the sheath yarn.

These yarns are supplied from individual supply rollers to a processing device (compressed air supply amount: 80 to 12 ONr/min) that forms a compressed air turbulent region at different overfeed rates, and are discharged from the processing device, entangled and mixed fibers. The treated latent loop yarn is taken off by the same take-off roller.

The overfeed rate here means that when the surface speed of the supply roller is 1 and the surface speed of the take-up roller is 2, the feed rate is expressed as (%), F (%) = ((Vl- The value of V2)/V2)×100 is (
+) is called the overfeed rate.

Then, the overfeed rate α of the core yarn should be 2 to 15%, the overfeed rate β of the sheath yarn should be 5 to 30%, and roughly the difference β-α between the two should be 3 to 15%.

This condition is suitable for creating many small loops and cruzi in the pressure air turbulence region.

More preferably, the yarn I'I is such that the yarn pulled out from the first take-up roller is fed by a second take-up roller at an underfeed rate of 0.4α to 0.8α with respect to the overfeed rate α of the core yarn. This involves winding it up while keeping it under continuous tension.

The latent loop yarn obtained by the above method is a differentially contracted interwoven synthetic fiber multifilament composite yarn having fine loops and cruzi on the surface of the yarn, and by heat treatment under no tension, the number of fine loops and It is possible to increase the size.

In the above minute loop, loop A formulated below is 30
The number of loops B is 50 or more and the number of loops C is 10 or less. Also, 98°C
When heat-treated by freely shrinking in hot water for 10 minutes, the number of loops B after drying is 1.5 times or more than before heat treatment, and the number of loops C is 50 or more/m.

Loop A, Loop B1 and Loop C here are photoelectric fuzz measuring devices (h) that measure the number of loops and fuzz of running yarn.
TORAY FRAY C0UNTER)
Measured under the conditions of yarn speed 5 Qm/min and running tension 0.1 q/d, the number of loops protruding 0.15 mm or more from the yarn surface/m is determined by loop A1, the number of loops protruding 0.35 mm or more/m from loop B1 and 0. The number of loops protruding by 6 mm or more/m is defined as loop C.

The above-mentioned latent loop yarn increases the number of open loops and closed loops due to heat treatment during the textile dyeing process, and the shrinkage volume of the light itself in the length direction increases due to shrinkage, which further improves the texture of the textile. However, the effect can be enhanced as a high-density fabric.

When a high-density fabric is made by using interlaced and closed loop interlaced yarns made of synthetic multifilaments for the warp yarns and spun yarns for the weft yarns, the above-mentioned interlaced yarns are different from the conventional simple yarns. The loop yarn, which is 1q reduced by the fluid turbulence treatment, is a straight yarn that does not seem to be a loop yarn, so it is possible to weave at a density that is impossible with conventional loop yarns.

Therefore, the warp yarns are woven with as high a density as possible, the weft spun yarns are implanted at a normal density or a high density, and the weft yarns are shrunk in the warp direction through shrinkage treatment in subsequent processes such as the dyeing process. At the same time, the texture of the spun yarn is impaired due to the emergence of loops and the presence of the wings of the spun yarn, loops and closed loops of the synthetic multifilament yarn mixed together on the surface of the fabric. Without,
A high-density fabric that fully expresses the span effect in terms of appearance.
be qed. The above-mentioned interlaced mixed fiber yarn may be additionally twisted. Furthermore, the spun yarn may be natural fibers such as cotton, wool, linen, or silk, synthetic fibers such as polyester, nylon, or acrylic, or a blend of the two. It is preferable to use a finer yarn count of 100 mm or more in order to improve the quality of thin fabrics. In addition, in the case of a high-density fabric using spun yarn for the warp, the weft has a boiling water shrinkage rate of 10% or more, preferably 1.
By using an intertwined mixed fiber yarn in which 5% or more of open loops and closed loops are mixed, the density during weaving is calculated to increase due to shrinkage of the weft yarns compared to the desired density, and it is possible to weave relatively coarsely. By increasing the bulk in the dyeing process, it is possible to achieve further fullness and higher density, and it is also possible to increase the weft insertion density, resulting in a rougher density.

Example 1 A 100% polyester single yarn with a cotton count of 60S was used as the warp, and polyester Neiramen 1 to Yarn 30D-12F with a boiling water shrinkage rate of 20% was used as the weft as a multifilament yarn constituting a relatively core side. As a multifilament yarn that composes a comparatively fine pattern, using round cross-section bright yarn,
Polyester filament yarn 30D with boiling water shrinkage rate of 8%
Using -48F round cross section bright yarn, core yarn side overfeed rate +9%, sheath yarn side overfeed rate +15%,
The feed rate of the first take-up roller and the second take-up roller is -5,
4%, processed with a turbulent nozzle with a compressed air supply rate of 9ON/min, fineness of 63D, boiling water shrinkage rate of 18.4%, number of loops before heat treatment, loop A is 332 pcs/m, loop B is 72 pieces/m, loop C is 1 piece/m, and the number of loops after free contraction in boiling water is 416 pieces/m for loop B.
A latent loop yarn with a loop C of 330 strands/m and a loop C of 88 strands/m was used, and was woven in a flat weave on a rapier loom, and the gray fabric was subjected to a normal relaxing process and then dyed using a jet dyeing machine.

Fabrics finished with water repellent treatment and back calender treatment after finishing Cera 1 have improved functionality due to the higher density of the warp threads, and have an unprecedentedly good finish in both texture and appearance. was gotten.

Moreover, the weavability was good without any problems.

However, in the comparative example, both the warp and weft are 100% cotton (combed yarn>80 single yarn).

Example Comparative example Gray fabric warp/latitude density 114 Xll0 146 X
131 (cover factor> (1920)
(2257) Warp/latitude density after dyeing 152 x 120
157 x 135 (cover factor) (235
0) (2380) Water pressure resistance (+++m)
430 210 Tooru 2! ii1 degree (Cl/
cm/24hr) 8450 Example 2 The latent loop yarn used for the weft in Example 1 was used for the warp, and the weft was 100% cotton (combed) with a set count of 80S.
A plain fabric was woven using a rapier loom using single yarn.

The gray fabric is put into the dyeing process and relaxed - intermediate set -
Dyeing finish set - Water repellent added knee calendar processing (back side)
Processing was done with.

The finished woven fabric had a similar appearance and feel to those made of 100% spun yarn, and had excellent -F functionality.

Warp and weft density of gray fabric: 176 pieces/in x 95 pieces/
in (cover factor>(2168> warp/latitude density after dyeing 183 lines/in x 118 lines/in
(Cover factor>(2410>Water pressure resistance (m)
m) 410 Moisture permeability ((]/ca+'/24hr) 8600
However, cover factor = (warp density (pieces/in) ten weft yarn density (pieces/1n)) x, /7 Also, D: Calculated by the denier of the raw yarn, and the set count is converted to denier by 5315 ÷ cotton count. bell.

(Effects of the Invention) Since the present invention uses an interlaced yarn of latent loop yarns in the warp or weft, heat treatment during the fabric dyeing process increases the number of open loops and closed loops, and shrinks the yarn. Since the shrinkage volume in the longitudinal direction of the fabric itself increases, the feel of the fabric can be improved and the effect as a high-density fabric can be enhanced.

When using an interlaced mixed yarn consisting of open loops and closed loops made of synthetic fiber multifilaments as described above for the warp yarn and a spun yarn for the weft yarn to create a high-density fabric, the above entangled mixed yarn can be used instead of a conventional simple fluid. Unlike loop yarn, which loses 1q due to turbulence treatment, it is a straight yarn that does not seem to be a loop yarn, making it possible to weave at a density that is impossible with conventional loop yarns.

In addition, by weaving the warp yarns with as high a density as possible and placing the spun yarns of the weft yarns at normal density or high density, the shrinkage treatment in the subsequent processes such as the dyeing process shrinks in the warp direction, resulting in a high weft density. At the same time as the fabric is obtained, as the loops become apparent, the fuzz of the spun yarn and the loops and closed loops of the synthetic multifilament system are mixed and covered on the surface of the fabric, which damages the texture of the spun yarn. without any trouble,
The spun effect is fully expressed in terms of appearance, and a thin, high-density fabric that has not been previously available can be obtained.

In addition, by using spun yarn for the warp and intertwined yarn with interlaced loops and closed loops for the weft, the density during weaving can be increased due to the shrinkage of the weft, compared to the desired density. By calculating the density, it is possible to weave relatively coarsely,
By bulking up in the rough dyeing process, fullness and high density are achieved, and it is also possible to increase the weft insertion density, making it possible to create a fabric with a high density that was previously unobtainable.

[Brief explanation of the drawing]

The figure is a VIR schematic diagram showing an example of a method for manufacturing an interlaced mixed fiber yarn preferably used in the present invention. 1: Core yarn package 2: Core yarn 3: First supply roller 4: Processing device 5: Sheath yarn package 6: Sheath yarn 7: Second supply roller 10: Loop yarn 11: First take-up roller 12: First 2 take-up roller 13: take-up device

Claims (3)

[Claims] (1) The warp (or weft) of the fabric is made of synthetic fiber multifilament yarn with a shrinkage function, and the yarn surface has open loops and closed loops.
or warp), and the total cover factor of the warp and weft is 2000 to 350.
A mixed-woven high-density fabric characterized by having a density of 0. (2) The interwoven high-density fabric according to claim 1, wherein the interlaced mixed fiber yarn has a boiling water shrinkage rate of 10% or more. (3) The interlaced mixed yarn consists of a synthetic fiber multifilament yarn located relatively on the core side and a synthetic fiber multifilament yarn located relatively on the sheath side, and the synthetic fiber multifilament yarn is located relatively on the core side. 3. The mixed-woven high-density fabric according to claim 2, wherein the yarn has a boiling water shrinkage rate greater than that of a synthetic fiber multifilament yarn located relatively on the sheath side.