JPH0130936B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a high-density fabric having irregularities on the surface of the fabric.

(Prior Art) Many means for imparting irregularities to the surface of textiles have been known. Among these known techniques, those that utilize the difference in shrinkage of the threads that make up the fabric include:
Satsuka textiles have been known since ancient times. Since synthetic fibers have come into use, satsuka fabrics have been obtained by combining heat-set synthetic fiber yarns (threads with low shrinkage) and untreated yarns (yarns with high shrinkage).

However, in order to provide unevenness to the surface using such low-shrinkage yarns and high-shrinkage yarns, it is necessary for the high-shrinkage yarns to freely shrink in the fabric.
For this purpose, the density of the fabric is low and the structure is rough, or the method of using soluble fibers in combination with low shrinkage yarns and high shrinkage yarns (Japanese Patent Laid-Open No. 52
103564), it was necessary to shrink the high shrinkage yarn freely or to shrink the high shrinkage yarn after giving a convex shape to the low shrinkage yarn.

However, with these methods, it is difficult to make a high-density woven fabric because the woven fabric density is low, and it is similarly difficult to increase the density of the woven fabric when using soluble fibers. Ta.

Furthermore, in order to obtain a high-density fabric with an uneven surface using a low-shrink yarn and a high-shrink yarn,
By combining the two points of increasing the design density and making the shrinkage difference between the low-shrinkage yarn and the high-shrinkage yarn sufficiently large so that the finished density of the woven fabric is sufficiently high, the fabric has a high density and One possible method is to obtain a fabric having irregularities on its surface.

However, this method has the drawback that while the structure of the fabric becomes denser due to shrinkage, the binding force between the constituent yarns of the fabric increases, making the texture stiff and unusable. Ta. Furthermore, with this method, it was impossible to form minute irregularities with a grain size of 2 to 3 mm or less.

(Object of the invention) The object of the present invention is to improve such conventional drawbacks,
The purpose of the present invention is to propose a fabric that is a high-density fabric, has irregularities on its surface, and has a good texture.

(Structure of the Invention) The woven fabric of the present invention is a high-density woven fabric having a cover factor of 1800 or more based on the fabric finishing density, and wherein the warp and/or weft constituting the high-density woven fabric are , an ultra-fine multifilament yarn with a single filament fineness of 1.0 denier or less and a synthetic fiber multifilament yarn with a single filament fineness of more than 1.0 denier are used, and the ultrafine multifilament yarn and the synthetic fiber multifilament yarn are mixed every 1 to 10 yarns. By making the yarn length of the ultra-fine multifilament yarn shorter and by making the difference in yarn length between the synthetic fiber multifilament yarn and the ultra-fine multifilament yarn 3% or more, It is characterized by the formation of minute irregularities, and furthermore, by applying a water repellent treatment to the fabric, the surface of the minute unevenness of the fabric meets JIS L.
-1092 water repellency (spray test) measurement method, the fabric can have a high degree of water repellency such that the water repellency L ₅ is 90 or more.

This will be explained in detail below.

The cover factor (CF) of the finished fabric density as used in the present invention is: CF = warp density x √ warp denier + weft density x √ weft denier However, the warp density is the warp density of the finished fabric (warp density /
2.54cm) and the weft density of the finished fabric (strands/2.54cm).The fabric of the present invention must have a cover factor of 1800 or more, preferably 2000 to 2000. 2400 is exemplified. If the cover factor is less than 1800, it is not preferable because the high-density fabric targeted by the present invention cannot be obtained.

Next, as the yarns constituting the fabric of the present invention, ultrafine multifilament yarns with a single filament fineness of 1.0 denier or less and synthetic fiber multifilament yarns with a single filament fineness of more than 1.0 denier are used.

Since the ultra-fine multifilament yarn has a yarn length difference from the synthetic fiber multifilament yarn to form a woven fabric, it is desirable that the ultra-fine multifilament yarn has high shrinkage. A preferable example is 10% or more.

Furthermore, it is preferable to use the ultrafine multifilament yarn that becomes bulky after shrinking, and such bulky yarn is made of fiber-forming polyester polymer (P) and fiber-forming polyamide polymer (N ) are alternately arranged adjacent to each other a plurality of times. In such a composite yarn, the adjacent interface is peeled and divided at random finite length points,
By distributing the peeled divisions along the yarn axis direction, it becomes a multi-filament yarn with different fineness, and a part of the multi-filament yarn has (P)-(N), (P)-(N)-( P), (N)
−
It is preferable that the split fibers can be formed into split fibers having an adjacent arrangement such as (P)-(N), and such split fibers can be formed by mechanically processing the composite yarn before weaving. Those that are processed to become the above-mentioned split fibers, and those that are made into split fibers by performing exfoliation and splitting treatment at a low temperature of 60°C or less using a swelling agent such as ortho, phenyl, phenol, etc. etc. are exemplified.

Furthermore, the composite yarn from which such split fibers can be easily obtained has a hollow annular cross section in the direction perpendicular to the fiber axis direction, and the above (P) is formed in the tangential direction of the hollow. The best example is a hollow annular composite yarn in which (N) and (N) are arranged adjacent to each other.

Next, examples of the synthetic fiber multifilament yarn include those made of synthetic fibers such as polyacid, polyester, and polyacrylic, with polyester fibers being preferred from the viewpoint of the texture of woven or knitted fabrics. Furthermore, in order to provide unevenness to the surface like the fabric of the present invention, the synthetic fiber multifilament yarn should have thick portions and thin portions alternately and randomly along the yarn axis direction. It may also be a thick and thin multifilament yarn.

The woven fabric of the present invention is obtained by weaving using such threads, and the woven fabric may have a plain weave structure or a modified structure thereof. What is important when weaving is that the ultrafine multifilament yarn and the synthetic fiber multifilament yarn have a
They are arranged alternately for each book. This alternating arrangement does not require that the same number of ultrafine multifilament yarns and synthetic fiber multifilament yarns be alternately arranged. Furthermore, the arrangement of yarns in such an alternating arrangement is not limited to warp yarns, but also warp yarns, weft yarns,
Like only the weft, the warp and warp threads can be freely selected.

The fabric woven in this way can be obtained as a textured fabric by passing through the usual dyeing and finishing processes. However, in the case where a peeling and dividing treatment is performed using a swelling agent, it is desirable that the greige fabric is subjected to a peeling and dividing treatment and then subjected to a dyeing/finishing process, but the present invention is not limited to this method.

In the resulting fabric, 3% was added between the ultrafine multifilament yarn and the synthetic fiber multifilament yarn.
It is important that the ultrafine multifilament yarn has the above yarn length difference and that the yarn length of the ultrafine multifilament yarn is short. If the yarn length difference is less than 3%, minute irregularities will hardly appear on the surface of the fabric, which is not preferable.

The fine irregularities on the surface of the fabric are caused by the above-mentioned alternating arrangement and yarn length difference, and it is effective to apply a water repellent finish to the surface having such fine irregularities. A known method is used for the water repellent treatment.
This is done by applying it to the fabric by a spraying method, a patting method, a dipping method, a coating method, or the like. In addition, in the present invention, water repellency L ₅ is JIS
5 in accordance with the method shown in 0217 (1) How to wash (103)
The water repellency after washing twice was measured using the JIS L-1092 water repellency (spray test) test method.

(Action of the Invention) Since the woven fabric of the present invention has the above-described configuration, it has minute irregularities on its surface and is extremely dense.

Conventional high-density fabrics use high-shrinkage threads to achieve high density, and in order to increase the effect of density,
The woven fabric of the present invention has a smooth surface due to heat and pressure treatment using a calendar, etc., but the woven fabric of the present invention is characterized by having minute irregularities.
In addition, some fabrics with minute irregularities on the surface have uneven textures developed by the torque of highly twisted yarns or highly crimped yarns. had to be small, and it was not possible to obtain the high density of the fabric of the present invention.

In the woven fabric of the present invention, ultra-fine multifilament yarns and synthetic fiber multifilament yarns are arranged alternately to shorten the length of the ultra-fine multifilament yarns, so unevenness appears on the surface of the woven fabric. It is.

FIG. 1 is a plan view schematically showing an example of the fabric of the present invention, in which 1 is a group of ultra-fine multifilament yarns (1 to 10 yarns), and 2 is a group of synthetic fiber multifilament yarns (1 to 10 yarns). 10 pieces) are shown. In part A in Figure 1, the warp and weft are made of high-shrinkage ultra-fine multifilament yarn, and in part B, the warp and weft are made of low-shrinkage synthetic fiber multifilament yarn. The part is a part where the ultra-fine multifilament yarn and the synthetic fiber multifilament yarn are mixed and woven. With this arrangement, a high-density woven fabric can be obtained by shrinking the ultra-fine multifilament yarn, and A
The part B has a concave shape, and the part B has a convex shape, forming minute irregularities on the surface of the fabric. These minute irregularities occur because the threads are arranged at a fine pitch of 1 to 10, and these minute irregularities appear in the form of ripples. In addition, since the minute irregularities are formed by the difference in yarn length and the intersection of the yarns, the fine irregularities have the advantage of being uniformly formed. In conventional satsukare-like fabrics in which high-shrinkage yarns and low-shrinkage yarns are simply arranged alternately, even if the high-shrinkage yarns shrink, surface irregularities do not appear if the yarns are arranged in narrow pitches as described above. However, in the case of using ultra-fine multifilament yarn, it is assumed that because the rigidity of the yarn is weak, an uneven surface is easily formed. Moreover, even if high shrinkage yarn is used, the texture will not become stiff because it is an ultra-fine multifilament yarn.

Furthermore, in the case of ultra-fine multifilament yarns using composite yarns such as those described above, bulkiness is imparted to the filament yarns, so despite the high density,
A soft and voluminous fabric with good texture can be obtained.

Furthermore, fabrics that have been treated to be water-repellent and have such a surface with minute irregularities tend to trap air between the water droplets and the minute irregularities on the fabric, and therefore exhibit excellent water repellency. be.

Example 1 As an ultra-fine multifilament yarn, it has a hollow annular cross section, and polyacid (N) and polyester (P) are arranged in the tangential direction of the hollow (P)-(N)-(P).
- (N) - Hollow annular composite yarn 75 denier / 20 filament ((P) /
(N) ratio = 50:50, 16 layers, boiling water shrinkage rate 14%)
As a synthetic fiber multifilament yarn,
Using polyester multifilament 75/36 (boiling water shrinkage rate 6%), these two yarns were arranged alternately at a ratio of 2:2 and woven in a plain weave structure for the warp and weft, and then Tetrosin OE-N was added as a swelling agent.
Using a 3% aqueous solution (manufactured by Yamakawa Pharmaceutical Co., Ltd.), peel and divide treatment is performed at a temperature of 30℃ for 60 minutes, followed by a normal dyeing finish process that includes hot water treatment to sufficiently shrink the yarn. provided. The obtained fabric is
Cover factor CF due to finishing density is CF=2180
It was a high-density fabric. In addition, the yarn length of the ultra-fine multifilaments that make up the fabric is shorter, and the yarn length difference from the synthetic fiber multifilaments is 5.
%, and about 0.3mm to 0.5mm vertical/
A fabric with an excellent texture was obtained, which uniformly had fine irregularities in the width and height, and was flexible and had a dry touch due to the fine irregularities.

Example 2 The fabric obtained in Example 1 was treated with Asahi Vanguard AG710 (manufactured by Asahi Glass Co., Ltd.) 10% Unicare Resin 380K (manufactured by Union Chemical Co., Ltd.) 0.3% Sumitex Accelerator ACX (Sumitomo Chemical Co., Ltd.) as a water repellent treatment agent. (KK)
A water-repellent treatment was applied using a patting method using 0.1% of the product. The obtained woven fabric had extremely excellent water repellency, and the water repellency as determined by the JIS L-1092 spray measurement method was L ₅ =100.

Example 3 A superfine multifilament yarn similar to that used in Example 1 was used, and a 75 denier/36 filament thick-and-thin yarn (birefringence △n of the thick part) was used as a synthetic fiber multifilament yarn. ₁ = 51×10 ^-3 , birefringence of thin part △n ₂ =
^Example 1
The fabric is woven into a plain weave structure using the same arrangement method as above, and then subjected to peeling and division treatment, and dyed.・The difference in yarn length from the and thin yarn is 4.5%, and there are 0.3 to 0.5 mm of vertical, horizontal, and
A novel fabric with a soft texture and a cool feeling due to the fine irregularities with high saps was obtained.

[Brief explanation of drawings]

FIG. 1 is a plan view schematically showing an example of the fabric of the present invention. 1...Extra-fine multifilament yarn, 2...Synthetic fiber multifilament yarn.

Claims (1)

[Claims] 1. Cover factor due to fabric finish density is 1800
In the above high-density woven fabric, the warp and/or weft, or any one of them, constituting the high-density woven fabric includes an ultrafine multifilament yarn with a single yarn fineness of 1.0 denier or less, and a single yarn fineness of 1.0 denier. Using synthetic fiber multifilament yarn that exceeds
The ultrafine multifilament yarn and the synthetic fiber multifilament yarn are arranged alternately every 1 to 10, and the length of the ultrafine multifilament yarn is made shorter, and the synthetic fiber multifilament yarn and the synthetic fiber multifilament yarn are arranged alternately. 1. A high-density fabric with uneven surfaces, characterized in that minute unevenness is formed on the surface of the fabric by making the yarn length difference between ultra-fine multifilament yarns 3% or more. 2. The fabric according to claim 1, wherein the surface of the fabric on which minute irregularities are formed is a water-repellent surface.