JPS6245347B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a method for producing a modified polyester fiber/natural polyamide fiber blend fabric that has a soft feel and a warm touch. Raised fabrics are generally produced by raising and cutting the fibers on the surface of the fabric using a cloth, emery paper, or the like. Conventionally, natural fibers such as cotton and wool, and chemical fibers such as rayon and acetate have been widely used as raised fabrics. However, products using natural fibers or chemical fibers have drawbacks in wrinkle resistance, easy care properties, dimensional stability, etc., and there is a strong desire to develop fabrics using synthetic fibers with excellent properties. However, synthetic fibers, especially polyester fibers, are difficult to raise due to their toughness, and not only are the workability of the raising process inferior, but they also have the disadvantage of having a hard texture, and it is difficult to obtain raised fabrics that are uniform and have an excellent appearance. It has difficult drawbacks. Furthermore, when producing a raised fabric made from a mixture of polyester fiber and wool, due to the difference in the strength of the fibers, there is a noticeable difference in napping, which not only makes it impossible to obtain a raised fabric with a uniform appearance, but also causes what is called pilling. Pill-like defects occur, significantly deteriorating the appearance quality. In the past, attempts have been made to raise fabrics that are a mixture of polyester fibers and wool, but due to drawbacks such as poor workability and pilling in the raising process of polyester fibers, it has been difficult to raise the fabrics using a mixture of polyester fibers and wool. The fabric is limited to raised fabrics on the outer wool side of cross-knitted woven fabrics with the following texture structure, and therefore, generally, raised fabrics are acrylic/wool blend fabrics. The present inventors have solved the above drawbacks and created a polyester/natural polyamide blend fabric that has a soft texture, warm touch, and excellent anti-pilling properties.
As a result of intensive research, we have arrived at the method of the present invention. That is, the present invention contains 0.5 to 5 mol% of the metal sulfonate group-containing carboxylic acid component based on the total acid component and 1 to 10% by weight of the glycol represented by the following general formula [] based on the polyester _. O(CjH ₂ jO)nH
...[] (In the formula, R is a divalent monovalent hydrogen group having 4 to 20 carbon atoms,
m and n are the same or different integers, 1≦m+n≦
15, i, and j are integers from 2 to 4. ) is immersed in an acidic aqueous solution with a pH of 2 to 6 at a temperature of 70 to 120°C or after applying an aqueous solution with a pH of 2 to 6. ~
This is a method for producing a raised fabric, which is characterized in that it is subjected to a wet heat treatment at 150°C and then subjected to a raising process. When using the method of the present invention, the raising process is easy;
Moreover, it has the feature that not only a uniform nap can be obtained, but also a nap product that has a soft texture and a warm touch can be obtained. The modified polyester fiber used in the present invention contains an acid component mainly (80 mol% or more) of terephthalic acid or its ester-forming component and a glycol such as ethylene glycol, tetramethylene glycol, 1,4-cyclohexanedimethanol, etc. An alkylene terephthalate polyester obtained by polymerizing a glycol component as the main component (80 mol% or more), with a metal salt sulfonate group-containing carboxylic acid component of 0.5 to 0.5% to the total acid component.
It is a fiber obtained by spinning, stretching, and optionally heat-treating a modified polyester copolymerized with 5 mol%, preferably 1 to 3.5 mol%. Modified polyester fibers are produced by copolymerizing isophthalic acid in an amount of 12 mol% or less based on the total acid component as an additional copolymerization component, or by copolymerizing isophthalic acid in an amount of 12 mol% or less based on the total acid component, or
Modified polyesters containing 1 to 10% by weight of glycols having ether bonds, particularly 1 to 10% by weight of glycols represented by the formula [ ] are preferred. The latter modified polyester is particularly preferred in terms of nap quality and texture. HO (CiH ₂ iO) − _n R−O (−CjH ₂ jO) − _o H
...[] (In the formula, R is a divalent hydrocarbon group having 4 to 20 carbon atoms,
m and n are the same or different integers, 1≦m+n≦
15, i, and j are integers from 2 to 4. ) In addition, the intrinsic viscosity of the modified polyester fiber (phenol/tetrachloroethane 6/4 weight ratio, 30℃
) is preferably about 0.35 to 0.6. In addition, as specific examples of R in the above formula [], for example, a linear aliphatic hydrocarbon group such as (-CH ₂ ) _-6 ,

It has a side chain like [formula] aliphatic hydrocarbon group,

Hydrocarbon groups having an aliphatic ring such as [Formula] may be mentioned, and among them, aliphatic hydrocarbon groups having a side chain are particularly preferred.

A 2,2-dimethylpropylene group represented by the formula is most preferred. Furthermore, examples of natural polyamide fibers include wool, cashmere, mohair, camel, alpaca, etc., and the fibers may be preshrink-proofed. The mixed form of modified polyester fiber and natural polyamide fiber in the present invention is not particularly limited, such as a knitted woven fabric of blended yarn, a mixed knitted woven fabric of both fibers, etc., but as a raised fiber, the modified polyester fiber of the present invention and natural polyamide fiber may be used. The effect is more pronounced when a blended yarn of fibers is used and the base yarn or base fabric is composed of other fibers. The effect is even more pronounced when the blending ratio of modified polyester fiber in the blended yarn is 50% by weight or more. The type of fabric may be woven, knitted, nonwoven, etc., but woven or knitted fabrics are usually preferred. The textures of knitted fabrics include jersey, smooth, pontiloma, motsukuroday, pile-like weft knits, half-knits, satin-like warp knits, and woven fabrics such as flat, twill, satin, and variations of these. Examples include a single weave structure, a warp or weft double weave structure, a warp and warp double weave structure, and a piled structure such as kohl and velvet. However, structures that can be raised on both sides are preferred, such as circular knit piles, fleece hanging jerseys, and double-woven fabrics and piled fabrics.
Yes. The fabric thus obtained is subjected to a wet heat treatment and then raised. The moist heat treatment is usually carried out in an acidic bath with a pH of 2 to 6, particularly preferably 3 to 5.
The treatment is carried out at 120°C, preferably 80°C to boiling temperature, for 10 minutes or more, preferably 30 to 90 minutes. Alternatively, a method of preferably applying an acidic aqueous liquid and then steaming at 90 to 150°C can also be used. The moist heat treatment can also be performed simultaneously with other treatments such as dyeing. Raising is carried out by methods used for normal fabric raising and fluffing, such as needle cloth raising, emery raising, and polyshear raising, but in the present invention, polyshear raising, which has extremely good raising properties and can be easily raised, is used. Emery raising is sufficient and the number of raising times may be small, but in some cases, treatment with a treatment agent that reduces interfiber friction, such as moisture, organopolysiloxane, waxes, polyester polyale water-dispersible resin dispersion, etc. may improve the raising. can be further improved. Further, by applying the raising process to both sides, it is possible to easily perform value-added processing such as a bulky double-sided raised fabric, and furthermore, by performing a steaming process, it is possible to create a felt-like raised fabric. The thus-obtained raised fabric is suitable for clothing, interior items, interior items of vehicles, etc., bedding items, and the like. Of course, it can be subjected to various usual finishing treatments after being brushed. The present invention will be explained below with reference to Examples, but the present invention is not limited to the Examples. Example 1 In the general formula [], R is a 2,2-dimethylpropylene group, m+n=4, i, j=2, the glycol component is 4% by weight, and 5-sodium sulfoisophthalic acid (SIPA) is 3% by mole. A blended yarn of ethylene terephthalate-based modified polyester fiber copolymerized with wool at a ratio of 1/52's (80% modified polyester fiber/20% wool) is used as pile yarn, and ordinary processed polyester yarn (150d/30f) is used as ground yarn. A pile knitted fabric was knitted using this method. After pre-wetting the obtained knitted fabric, the wool side was dyed by acid bath treatment at the pH shown in Table 1 (100℃ boil, 60 minutes), dried, and after intermediate setting,
Polisher was brushed on both sides, and after final setting at 150°C for 30 seconds, vapor carpet was set. The resulting double-sided raised fabric was evaluated for softness of hand, strength of the raised fabric, ease of raising, and appearance, and the results are shown in Table 1.

[Table] By the method of the present invention, a raised product with a soft texture, a warm touch, and an excellent appearance was obtained. Another major feature is that it has excellent pill resistance. 〓〓〓〓〓

Claims (1)

[Claims] 1. 0.5 to 5 mol% of a metal sulfonate group-containing carboxylic acid component based on the total acid component and 1 to 10% by weight of a glycol represented by the following general formula [] based on the polyester HO (CiH ₂ iO) mR−O(CjH ₂ jO)nH
...[] (In the formula, R is a divalent monovalent hydrogen group having 4 to 20 carbon atoms,
m and n are the same or different integers, 1≦m+n≦
15, i, and j are integers from 2 to 4. ) is immersed in an acidic aqueous solution with a pH of 2 to 6 at a temperature of 70 to 120°C or after applying an aqueous solution with a pH of 2 to 6. ~
A method for producing a raised fabric, which is characterized by subjecting it to moist heat treatment at 150°C and then raising it.