JPH04126840A - High-density woven fabric having light and shade pattern - Google Patents

Abstract

PURPOSE:To obtain the title woven fabric having irregular shade of dyed color, having excellent waterproof property and air permeability and suitable as a fabric of clothing, umbrella, etc., by weaving a weft consisting of a specific fibril bundle and warp obtained by doubling the above-mentioned weft and polyester filament. CONSTITUTION:(A) Polyamide and (B) polyethylene are conjugated into a side by side type filament and the filament is used as a weft. The weft and (C) warp obtained by doubling the above-mentioned weft and polyester filaments (having >=1 denier single fiber fineness) are woven and then treated with a fibrillating agent and then subjected to heat treatment with steam, preferably having 70-120 deg.C temperature and the conjugate filament is split to provide the aimed woven fabric having <=0.5 denier average single fiber fineness.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a high-density fabric with a shading pattern, which has excellent waterproofness and appropriate breathability, and has a deep color tone.

[Conventional technology]

Traditionally, fabrics for clothing filled with down (down) and windproof and cold-weather clothing are made by weaving fine-grained cotton with high density in the warp and weft, followed by resin processing, surface pressing, etc. A high-density woven fabric is used. Such high-density woven fabrics have the advantage that they themselves have a certain degree of waterproofness, and that their waterproofness can be easily increased by processing with resin or the like. However, the above-mentioned high-density woven fabrics have problems in that they have poor weaving efficiency because they must be woven by inserting thin threads at a high density in the warp and weft, and the resulting woven fabrics are thick and do not have a good texture. Additionally, products whose waterproof properties have been improved through resin processing or the like have the disadvantage that the effect will fade over time.

In contrast, the present applicant has proposed a method of increasing the density of a woven fabric by using a special fibrillated composite filament 1- and splitting the fibrillated composite filament described in "2" after weaving to give heat shrinkage. has been developed and the rights have been obtained (Special Publication No. 8535/1983). This method has good weaving efficiency because it requires just the same punching as for regular woven fabrics, and because the resulting woven fabric has an ultra-high density, the structure of the woven structure itself provides adequate air permeability. It has the advantage of being waterproof and requiring no special resin processing. The surface has the advantage of being extremely smooth and having good level dyeing properties.

(Problems to be Solved by the Invention) However, the high-density fabric using the special fibrillated composite filament described in item 1 does not have a deep color tone due to its smoothness, and its texture is somewhat hard and softer. Things are now in demand.

Therefore, the present applicant has created false twisted monofilament yarns having a fineness of 20 times or more of the average single fiber fineness of a fibril bundle obtained by splitting the above-mentioned filaments into warp yarns using the above-mentioned special fibrillated composite filaments for the weft yarns. It has been discovered that a soft texture and subtle shading due to grains can be obtained by using this method, and an application has been filed (Japanese Unexamined Patent Publication No. 63-6130). However, since this improved high-density fabric uses monofilament as the warp, the warp density is coarse, and after shrinkage processing, the woven structure is
It has the disadvantage that sufficient waterproofness cannot be obtained.

The present invention was made in view of the above circumstances, and an object of the present invention is to provide a high-density fabric that has excellent waterproofness and appropriate breathability, and has a deep color tone.

[Means to solve the problem]

In order to achieve the above object, the high-density fabric with a light and shade pattern of the present invention is composed of bundles of fibrils having an average single filament fineness of 0.5 denier or less derived from weft yarns or fibrillated composite filaments, and whose warp yarns are A fibril bundle similar to the weft mentioned above and a polyester filament with a single filament fineness of 1 denier or more are used. The fabric is made up of composite yarns that are combined in such a way that the entire fabric is dyed so that the polyester filaments are dyed darker than the fibril bundles, resulting in a fine wavy shading pattern on the fabric surface. It has an irregularly formed structure.

[Effect]

That is, the present inventors have conducted a series of studies in order to obtain a high-density fabric with excellent waterproof properties and a deep color tone.

As a result, a fibrillated composite filament similar to that used in the invention of the previous application was used as the weft, and this fibrillated composite filament was combined with a polyester filament having a significantly larger single yarn fineness than that of the fibrillated composite filament. If composite yarns are used as warp threads so that their appearance on the outer circumferential surface is irregular, the weft threads will appear on the surface of the fabric.
Note: Fine fibril bundles originating from special composite filaments appear regularly in the same direction, and in some areas where the warp yarns appear, 100% fibril bundles appear due to the irregularity of the outer peripheral surface of the composite yarn. It was found that in some parts both fibril bundles and polyester filaments appeared, and the way they appeared (the proportion of fibril bundles and the outside of polyester monofilament I) was found to be uneven. For this reason, when this fabric is heat-shrinked and dyed with disperse dyes, the fibril bundles used in the warp and weft shrink at a high shrinkage rate, resulting in a very dense woven structure with excellent waterproof properties. Moreover, they discovered that when using a thin fibril bundle and a thick polyester filament, the thicker polyester filament is dyed darker, and a fine wavy shading pattern is formed irregularly over the entire fabric surface, leading to this invention. .

The present invention will now be described in detail.

In this invention, the fibril bundles constituting part of the warp and weft are derived from fibrillated composite filaments, and after weaving a fabric using the fibrillated composite filament I. Then, fM can be obtained by splitting the fibers.

The fifurrylated composite filament described in 2. is a filament in which polyamide and a polymer (such as polyester) that has no affinity with the polyamide are joined together along the longitudinal direction by composite spinning. In the cross section, both components A and B (either of which may be a polyamide component) have a zitehyzide type as shown in Figure 1 (1), and (2) in the same figure. , as shown in (3), it has a side-by-side repeating type, and as shown in (4) to (8) of the same figure, it has a component A that has a radial shape and a shape that complements this radiating part. As shown in the same figure (9L 00), it consists of component A with a radial shape and another component B with a shape that complements this radiating part, with one radial shape discontinuing at the center side. As shown in the same figure (11), examples include a side-by-side repeating type with a hollow part.

Examples of the polyamide that is one component of the composite filament include nylon 4. Nylon 6, Nylon 7, Nylon 1], Nylon 12 Nylon: /66, -1-Iron 6/10. Examples include polymethaxylene adipamide, polyparaxylylene decane amide, polyhiscyclohegylicylmethane decane amide, and copolyamides containing these components.

In addition, as polymers having no affinity with polyamide that form composite filaments 1 to 1 with the polyamide described in 1.
Examples include polyester, polyolefin, and polyacrylonitrile, but polyester and polyolefin are preferred from the viewpoint of facilitating melt composite spinning with the above-mentioned polyamide, and among them, polyester is most suitable. That is, when a combination of polyamide and polyester is used, the color tone, gloss, texture, etc. of the obtained fabric are most preferable. Examples of the above-mentioned polyesters include polyethylene terephthalene 1-, bolite I, ramethylene terephthalate 1, polyethylene oxyhenzea I, poly 1,4-cynodylcyclohexane terephthalate 1-, and polypyhalolactone. Examples of the polyolefin include polyethylene, polypropylene, and copolyolefins containing these as components.

Composite filaments 1~, which are a combination of the above two components, are polymers that have no affinity with each other, so they are usually swollen by physical impact such as mechanical bending or friction, or by swelling the polyamide with a chemical solution. The fibrils can be split into bundles of thin fibrils using a chemical method that allows fibrillation. Examples of such chemical solutions (fibrillating agents) include hensyl alcohol, β-phenylethyl alcohol, phenol, m-cresol, formic acid, and acetic acid. It is more suitable to use them as an aqueous solution or an aqueous emulsion than to use them directly.Among them, when an aqueous emulsion of Hensyl alcohol is used,
It is suitable for the shrinkability and fibrillation effect of the fabric, and for the fact that it is relatively easy to take up.

In this invention, the average single fiber fineness of the fibril bundle obtained by splitting the composite filament must be 0.5 denier or less. That is, if the average single yarn fineness exceeds 0.5 denier, the shrinkage rate of the weft will decrease and the texture of the resulting fabric will also deteriorate. In addition, the above-mentioned "average single yarn fineness" is defined by (single yarn fineness before fibrillation)/(number of medium yarn fibers after fibrillation), and for example, the shape shown in FIG. 1 (8) When the single filament fineness of a composite filament is 2 denier and the composite filament becomes nine single filaments (fibrils) by splitting as shown in FIG. 2, the average single filament fineness is 0. 2 denier.

In order to satisfy this condition, the weight ratio of the polyamide and the polymer that has no affinity with the polyamide must be 1:4 to 4:
It is preferable to set it to 1. Outside this range,
Single fibers with large fineness tend to remain after fibrillation.

On the other hand, the composite yarn used for the warp in the present invention is a yarn obtained by splicing the same composite filament as described above and a polyester filament. The polyester filament may be a multifilament or a monofilament, but the single filament fineness must be 1 denier or more.

In other words, if it is less than 1 denier, the difference in fiber thickness between the fibril bundle and the fibril bundle that has been split to have an average single yarn fineness of 0.5 denier or less will be small, resulting in a difference in the color of the yarn after dyeing. That's because there isn't. The polynisdel filament and the composite filament may be twisted together in the same way as normal twisting, or they may be interlaced. You can. However, it is preferable to combine the yarns by plying and twisting, since the resulting composite yarn is more strongly twisted, giving the resulting fabric a fine shading pattern. Further, it is preferable that the number of twists during plying and twisting is set to 400 to 600 T/M. If the twisting is too loose, the shading pattern of the obtained fabric will not be very clear and it will have a heathered flow pattern, whereas if the twisting is too high, the fibers will not be split sufficiently.

This invention involves weaving the special composite filament 1- as the weft and the composite yarn as the warp according to a conventional method, and then soaking or padding the woven fabric in the fibrillating agent or padding it along the longitudinal direction. After splitting into thin fibril bundles, heat at 70°C or higher, preferably at 90°C or higher.
The desired grained peddler density fabric can be obtained by shrinking by heat treatment with steam at 120° C., preferably 90 to 100° C., and further dyeing with a disperse dye or the like. The fabric thus obtained is
As schematically shown in the figure, fine wavy shading patterns are irregularly formed on the surface of the fabric. As shown schematically in Figure 4, this fine shading pattern is formed because, on the surface of the fabric, where the weft threads appear, there are always fine fibril bundles 1 derived from the above-mentioned special composite filaments.
appear regularly in the same direction, and on the other hand, in the part where the warp appears, 100% fibril bundle 1 appears in a certain part P, and fibril bundle 1 and fibril bundle 1 appear in a certain part Q, due to the irregularity of the outer peripheral surface of the composite system. Both polyester filaments 2 appear,
Moreover, this is thought to be due to the fact that the appearance (ratio of fibril bundles 1 and polyester filaments 2 on the surface) is uneven. That is, as mentioned above, the polyester filament 2 is darker than the fibril bundle 1 due to the difference in thickness between the fibril bundle 1 and the polyester filament 1-2, which appear irregularly on the fabric surface. It is dyed and the shading is clearly visible to the naked eye, resulting in a wavy, irregular shading pattern. And, this fabric has 1 fibril bundle used in the warp and weft.
Because it shrinks at a high shrinkage rate, it has a very dense woven structure and exhibits excellent waterproof properties. Incidentally, it has been measured that the fabric of the present invention exhibits water pressure resistance of 700 m/m or more.

In addition, the dyeing of the fabric of this invention is carried out by ordinary polyester dyeing.
There is no problem as long as it is carried out in the same manner as when dyeing nylon mixed fabric. Therefore, examples of the dye to be used include disperse dyes, 2-adzuk dyes, etc., and among them, disperse dyes are preferred.

Further, when the surface of the fabric obtained by the dyeing is subjected to a raising treatment, the shading pattern becomes even more vivid.

Next, examples will be described together with comparative examples.

[Examples 1 to 3, Comparative Example 1.2] High-density woven fabrics were made under the conditions shown in the table below, and the shading pattern of each sample was observed with the naked eye, and the texture was evaluated.

In addition, its water pressure resistance (according to JISL1092) was measured.

These results are also shown in the table below.

(Hereinafter, blank space) From the above results, it can be seen that the high-density fabric with a shaded pattern of the present invention
It can be seen that the product is superior to the comparative example product in terms of the clarity of the shading pattern, texture, and waterproofness.

(Effects of the Invention) As described above, in the high-density fabric with a light and shade pattern of the present invention, the weft is composed of a fibril bundle derived from a fibrillated composite filament, and the warp is composed of the same fibril bundle as above and a special thickness. The fibril east part and the polyester filament part appear irregularly on the fabric surface, and the fibril east part and the polyester filament part appear irregularly on the surface of the fabric. The fabric is dyed with different densities to form a shading pattern. Therefore, the shading pattern gives this fabric a deep color tone and a calm impression.

In addition, since the fibril bundles used in the warp and weft shrink at a high shrinkage rate, the woven structure becomes extremely dense and exhibits excellent waterproof properties. Therefore, it can be applied to various fabrics such as clothing, bags, umbrellas, etc. that require waterproofness for a day, and it is possible to provide products with high added value that have never existed before.

[Brief explanation of drawings]

Figure 1 (1), (2), (3), (4), (5
), (6), (7), (8), (9). 0) and (11) are cross-sectional views showing examples of fibrillated composite filaments used in the present invention, and FIG. 2 is an explanatory diagram of an example of the fibrillated composite filaments in a split state. FIG. 3 is a schematic plan view showing the state of the surface of the fabric of the present invention, and FIG. 4 is a schematic explanatory diagram of the weaving structure of the surface of the fabric. 1... Fibril bundle 2... Polyester filament

Claims (2)

[Claims] (1) The weft is composed of a fibril bundle derived from a fibrillated composite filament and has an average single yarn fineness of 0.5 denier or less, and the warp is a fibril bundle similar to the above-mentioned weft and a polyester filament with a single yarn fineness of 1 denier or more. A woven fabric composed of composite yarns that are combined so that the fibril bundle portion and the polyester filament portion appear irregularly on the outer circumferential surface, and the fabric is dyed as a whole. A high-density fabric with a shading pattern, characterized in that the polyester filament is dyed a darker color than the fibril bundle, and a fine wavy shading pattern is irregularly formed on the surface of the fabric. (2) The high-density fabric with a shaded pattern according to claim (1), which has a water pressure resistance of 700 m/m or more.