JPS5929698B2 - raised fabric - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fabric having naps made of ultrafine fibers.

More specifically, it relates to a fabric made of a combination of ultrafine fibers and ordinary fibers.

Textile products using ultra-fine fibers have made remarkable progress since the invention of deerskin suede-like artificial leather by the present inventors, and various types of ultra-fine napped fabrics have been developed, including woven fabrics, knitted fabrics, and non-woven fabrics made by needle punching and stitching. Fabrics possessing these characteristics have been produced and are now on the market.

However, such conventional fabrics had the following drawbacks.

That is, (1) When the front side has ultra-fine nape, the back side is often made of fibers of normal denier, but in that case, the fabric becomes extremely lacking in luxury.

(2) In woven and knitted fabrics, ultra-fine napped fabrics are prone to misalignment, and for this reason a small amount of resin (such as polyurethane) was applied, but the drawbacks associated with this resin application were also noticeable.

■ Plump and voluminous, drapey,
There were some areas where the sewing quality was lacking.

It is an object of the present invention to provide a device with fewer of these drawbacks.

For example, if one side has a suede look, the back side has a silk-like look.If we were to compare it to a beautiful woman, if the front side is Cleopatra, the back side is a princess.We provide high-class fabrics on both sides. be.

In addition, in five-ply satin, double-ply weave, triple-ply weave, tricot satin, Turkish satin, velvet weave, etc., the purpose is to reduce the misalignment of the texture of woven and knitted fabrics, and provide fabrics with a sense of fullness and suppleness. .

As a result of intensive study to achieve these objectives, we finally arrived at the present invention.

The outline is as follows.

■The ground structure is mainly composed of multifilament yarns with a cross-sectional shape of three or four protrusions of 0.7 denier or more, and the multifilament yarns are more relaxed than other fibers. 1. A fabric characterized in that it contains at least one fiber in the form of a fiber, and further has raised naps made of ultrafine fibers of 0.3 denier or less on one side.

The present invention will be explained in detail below.

In the present invention, the base texture portion is made of a relatively thick denier of 0.7 denier or more, has a cross-sectional shape with three or four protrusions, and is in a relaxed state than other fibers. It is characterized in that it is mainly composed of filament yarn containing at least one fiber.

This structural requirement is a factor that brings about effects such as swelling, bulkiness, unevenness or wavy surface of the yarn, and is a factor that gives a silk-like luxurious feel to the ground texture.

Such threads are often subject to shrinkage.

When shrinkage is involved, the density increases and the misalignment decreases, but the texture tends to harden.

If there is no or little shrinkage, the effect of improving density is small, but it has the advantage of not having a tendency to harden the texture.
Each has its own effect.

Such bulky yarns can be obtained by subjecting raw yarns such as (5), (E9, and (C) below) to bulk-up treatment as required.

A multifilament yarn that is a mixture of two or more types of fibers that differ in heat shrinkage or chemical solution shrinkage by 3% or more, more preferably by 5% or more.

(B) A multifilament yarn made of various types of fibers, including a portion of the same fiber that differs in heat shrinkage or chemical shrinkage by 3% or more, preferably by 5% or more, from other portions.

(C) Consists of a group of fibers with different yarn lengths, or
A multifilament yarn made of various fibers that has both almost straight parts and crimped parts within the fibers.

-(8), CB), and (C) can be obtained as follows.

For example, if two types of polymer components with different shrinkability are simultaneously discharged from each independent hole and stretched under appropriate stretching conditions, a yarn with a differential shrinkage mix, that is, a mixed fiber multifilament, can be obtained at once.

As one of the yarns shrinks, the other loosens, resulting in a bulky yarn.

A preferred combination of polymer components is, for example, a combination of polyethylene terephthalate and polyethylene terephthalate obtained by copolymerizing about 10 mol % of isophthalic acid.

The method of simultaneous blending and spinning is also preferable, but if the yarn has little or no twist, it is also possible to create a blended yarn by mixing multifilaments with different shrinkage ratios in a scraped manner or by mixing them with air. can.

Although this method is superior in that each yarn can be made independently without being spun simultaneously, it is hard to deny that the mixed fiber state is inferior to the former method.

Other methods include Japanese Patent Publication No. 53-6247, Japanese Patent Publication No. 47-47550, and Japanese Patent Publication No. 51-1853.
The method described in Publication No. 5 can be mentioned.

In order to produce an elegant silky tone, it is necessary for the fibers of 0.7 denier or more, which are the main constituent of such yarns, to have a cross-sectional shape with three or four protrusions. .

Particularly preferred are those having a triangular, T-shaped, Y-shaped fiber cross section, etc., as shown in FIGS. 1 to 4.

Also, if you want to make it bulkier, it is better to use a denier mix or a cross-sectional mix.

This is because these mixes simultaneously become shrinkage stress mixes and exhibit a significant bulking effect.

Further, the bulky yarns constituting the base structure of the fabric of the present invention are the fifth to first
From two-component yarn or three-component yarn fiber as shown in Figure 0,
It can also be obtained by separating and dividing components, or by dissolving and removing one component.

It goes without saying that all of the composite fibers shown in FIGS. 5 to 10 are mixed yarns having a cross-sectional shape with three or four protrusions.

Furthermore, it is preferable that the fibers constituting the bulky yarn have an uneven surface. For example, if the constituent fiber is polyester, it is preferable to impinge on the surface with a chemical solution such as an alkaline hot aqueous solution to form fine irregularities. good.

The fibers used for the raised portion in the present invention are mainly ultrafine fibers of 0.3 denier or less.

Ultrafine fibers can be obtained by various well-known methods, such as exfoliation methods, component removal methods, and combinations thereof.

In the present invention, the fabric is constructed from several types of fibers having different finenesses, and the methods for this are all known.

For example, Turkish satin (broken oblique pattern), satin weave such as five-ply satin, double-ply fabric, triple-ply fabric, tricot satin, velvet weave, veratine, kohl-woven, platen-woven fabric, etc. Preferably, ultra-fine fibers are used. Weave and weave so that more of it floats on one surface.

After that, the fabric is subjected to a raising treatment (sometimes carried out in parallel with the weaving and weaving), a bulking treatment, an ultra-fine treatment if necessary, a chemical treatment with alkali, etc. in an appropriate order depending on the purpose. It will be rubbed.

The surface opposite to the surface having the nap made of ultrafine fibers is mainly composed of multifilament bulky yarns having a specific cross section of normal denier (in the present invention, this refers to a fineness of 0.7 denier or more). There is.

It is a particularly preferred embodiment of the present invention that this surface is a smooth, high-quality silk-like surface.

The fabrics of the present invention are preferably made from polyester yarn fibers such as polyethylene terephthalate, but may also be made from any fiber-forming polymers such as various polyamides, polyacrylonitrile, polyester ethers (natural ones, i.e. acetates, benbelbums, etc.). , in the sense that it includes semi-synthetic or regenerated fibers such as rayon amino acid modified fibers).

It goes without saying that the twist and density of the thread can be selected as appropriate, and that polyurethane, polyacrylic resin, etc. can be added to the fabric.

This fabric can be used in all kinds of fields, including clothing, bags, furniture, interior decoration, and industrial decorations.

Next, actual cases related to the present invention will be shown, but the effectiveness of the present invention is not limited or limited by these actual examples.

Example 1 Using the following three types of yarn, the front side is 5 pieces of satin and the back side is 2 pieces.
A woven fabric with a double weave structure and a fill of /3 was made.

The weaving density was 138 pieces/in vertically and 81 x 2 pieces/in horizontally (first and second in total).

◎First thread (weft thread: mainly front) Polyethylene terephthalate is used as an island component (36 threads),
Island/sea ratio 78/22 with polystyrene as the sea component
45DX40fil polymer array fiber multifilament.

◎Second thread (weft thread: mainly back) A multifilament (50DX20fil) with a T cross section made of polyethylene terephthalate and polyethylene terephthalate containing 9.9 mol% of isophthalic acid.

A blended yarn from each half of a similar multifilament consisting of.

There is a 5% shrinkage difference between both filaments.

◎Third thread (warp thread) Made of polyethylene terephthalate, Special Publication 51-1
Multifilament (50DX36fil) with a T-shaped trilobal cross section made according to the method of 8535.

After weaving, the yarn was placed in a hot 2% sodium hydroxide solution, and the second and third yarns were subjected to shrinkage and bulk-up treatments at the same time.

It was then washed with hot water and dried.

Furthermore, this cloth was washed with a trichlorethylene solution using a washing machine, and most of the polystyrene of the first yarn was removed.

After that, it was applied to a napping machine and raised.

The number of passes was 20.

Thereafter, it was placed in a circular dyeing machine and dyed beige with a disperse dye for finishing.

This item had a high-quality suede-like graceful surface on the front, and a high-quality fabric with a high-grade silk-like graceful surface on the reverse side (it would be more correct to call it the opposite side).

In addition, it was fluffy, had good drape, and had little misalignment.

When we investigated the fiber structure, we found that both warp and weft, except for ultrafine fibers,
It was found that the bulking effect based on the fiber shrinkage difference and yarn length difference worked, making it even more silk-like and puffy (
In particular, it was found that there was a significant difference in structure by comparing it with a product made from raw silk, which does not have a bulking effect.

Example 2 In Example 1, the second thread was made the same as the third thread, and both the first and second threads were woven so that there were 5 sateen layers on the front and back sides,
A fabric was produced in the same manner as in Example 1 except that the alkali treatment was stopped.

The obtained fabric has good drapability and has little misalignment.
It has a graceful brushed surface on one side and a glossy silky surface (based on the absence of alkali treatment) on the other side.
It had a bulge to it.

[Brief explanation of drawings]

FIGS. 1 to 4 are cross-sectional views of fibers preferable as fibers constituting the base structure of the fabric of the present invention. Figures 5 to 10 show cross-sectional views of composite fibers suitable for obtaining fibers used in the base structure of the fabric of the present invention.

Claims (1)

[Claims] 1. The base structure is mainly composed of multifilament yarns having a cross-sectional shape with three or four protrusions of 0.7 denier or more, and the multifilament yarns are looser than other fibers. A fabric characterized in that it contains at least one fiber in a state of 0.3 denier or less, and further has raised naps made of ultrafine fibers of 0.3 denier or less on one side.