JPS61289147A - Coated elastic yarn - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a coated elastic yarn using high-strength fiber yarn.

In more detail, high-strength fiber threads are used as covering threads of elastic fiber threads or a part thereof, and have excellent stretchability and tensile strength properties, and are used for stretchable clothing such as swimwear and sportswear. The present invention relates to a covered elastic yarn that can be preferably used as a raw material.

In addition, it can also be made with superior transparency compared to conventional similar threads, and by taking advantage of this characteristic,
The present invention relates to a coated elastic yarn that can be preferably used as a material for stretchable clothing, such as pantyhose and tights, in which transparency is particularly preferred.

(Prior art) Conventionally, swimsuits, sportswear, pantyhose,
BACKGROUND ART In fields such as tights where elasticity is desired, elastic fiber threads are used in some of the knitted fabrics in order to improve the elasticity of these clothing fabrics.

Although such elastic fiber threads have excellent elongation elastic recovery, they have high frictional resistance and are difficult to handle in the fabric manufacturing process.
Another problem is that it cannot be dyed well. Therefore, nylon, polyester, which is slippery and easy to dye,
It has been attempted to coat such elastic fiber yarns with other fiber yarns such as acrylic, cotton, hemp, wool, cellulose, etc., and at the same time to adjust the elasticity and elongation characteristics appropriately.

In addition, fabrics for clothing such as swimwear and sportswear require high tear strength for woven fabrics or high bursting strength for knitted fabrics, so the covered elastic yarn used for these fabrics has high tensile strength. This is what is desired.

In addition to roughness, fabrics used for pantyhose, tights, etc. are desired to have a high degree of transparency. Therefore, the coated elastic yarns used in this field are required to have high tensile strength as well as high tensile strength. In order to obtain transparency, it is effective to make the coated elastic yarn as fine as possible.

In order to satisfy the above-mentioned requirements, the coated fiber thread of the coated elastic yarn is made to have higher strength, thereby improving the tear strength or bursting strength of swimsuits, sportswear, etc., or increasing the transparency of pantyhose, tights, etc. In order to improve the quality of clothing, high-strength yarns such as nylon are generally used as coated fiber yarns, but even high-strength yarns with only about 6q/d However, the strength of the fiber itself cannot be said to be sufficient, and it is necessary to significantly improve the tear strength or burst strength of knitted fabrics, or to obtain a certain level of strength. The actual situation is that the desired degree of transparency has not been achieved because sufficient fineness cannot be achieved.

In addition, carbon fibers and aramid fibers, which are used for structural materials in sports, leisure goods, automobiles, etc. and are generally considered to have high strength and high elastic modulus, have very low flexural strength.
Because they lack flexibility, cannot be dyed, and are expensive, they cannot be used as soles in coated elastic yarns.

(Problems to be Solved by the Invention) In view of the above-mentioned points, the purpose of the present invention is to improve the stretchability of knitted fabrics for clothing that require stretchability, which has not been possible with the prior art. A coated elastic yarn that can achieve high tear strength in woven fabrics or high burst strength in knitted fabrics while maintaining good tear strength, or thinning of the fabric while maintaining good tear strength or burst strength properties of the fabric. The purpose of the present invention is to provide a coated elastic yarn that can be used as a cloth for clothing with extremely excellent transparency, and also as a lightweight blanket that is rich in functionality and highly fashionable.

(Means for Solving the Problems) The covered elastic yarn of the present invention that achieves the above-mentioned object has the following configuration.

That is, an elastic fiber thread of 10 denier or more and 250 denier or less is used as a core component, and 10% or more of high-strength fiber having a tensile strength of 12 q/d or more is superimposed on the elastic fiber thread as a covering fiber component. This is a coated elastic yarn characterized by being made by wrapping and covering a fiber component containing 100% by weight or less.

(effect) Hereinafter, the present invention will be roughly explained in detail.

In the coated elastic yarn of the present invention, it is necessary to use high-strength fibers having a tensile strength of 12 g/d or more in the coated fiber component. It is difficult to obtain the full effect of this, which is not desirable.

The coated fiber component may be composed of 100% of the high-strength fibers, but according to the findings of the present inventors, if the coated fiber component contains at least 10% by weight of the high-strength fibers, the effect is improved. It is something that plays.

Fabrics knitted and woven using coated elastic yarns used in coated fiber components containing such high-strength fibers not only have excellent stretchability but also exhibit high tear strength and bursting strength. As mentioned above, it can be optimally used for swimwear, sportswear, etc., or it can also make high-strength fibers finer while maintaining tear strength or bursting strength at a certain level. This makes it possible to make the coated elastic yarn finer, resulting in a fabric that has excellent stretchability, transparency, lightweight, high functionality, and high fashionability. High-strength fibers can be either monofilament yarn or multifilament yarn, but it is better to use multifilament yarn with a large number of filaments than monofilament yarn because the coated fiber will have a very fine single fiber fineness. In general, the transparency and fashionability of the fabric as described above are further improved.

In the present invention, the elastic fiber yarn serving as the core component is 10 deniers or more and 250 deniers or less, in order to obtain the desired stretchability and because the yarn of the present invention is used for clothing. There is a need. That is, if it is less than 10 denier, it is difficult to obtain good stretchability, and if it is more than 250 denier, it is generally unsuitable for use in clothing. In the present invention, elastic fibers are
l which shows a value of expansion/contraction/elongation of 100% or more! Say 1 wei,
Preferably, fibers made of polyurethane elastomer, natural rubber, synthetic rubber, etc., which exhibit a high expansion/contraction rate of 400% or more, can be used.

Since the coated elastic yarn of the present invention is intended for use in clothing, it is generally 400 deniers or less, preferably several tens of deniers to 150 deniers or less.

The yarn made of high-strength fibers may be either a multifilament yarn or a monofilament yarn as described above, but it is important that the yarn is from about 1 denier or more to about 150 denier or less. If it is smaller than this range, the effect of using high-strength fibers will be poor, and if it exceeds 150 denier, the effect of elastic fiber threads will be poor. For the same reason, that is, in order to effectively exhibit the characteristics of both elastic fibers and coated fibers, in the coated elastic yarn of the present invention, the weight ratio of the core component and the coating component is set such that the core component/covering component = (70-5)/(30-95).

In the coated elastic yarn of the present invention, the coated fiber component may contain other fiber threads in addition to the above-mentioned high-strength fibers, and in that case, according to the knowledge of the present inventors, Ba,
If at least 10% by weight of the coated fiber component is high-strength fiber, the desired effect can be obtained. In this case, the other fiber yarns may be arbitrarily determined according to the yarn characteristics, texture, and desired surface characteristics of the covered elastic yarn of the present invention.

The high-strength fiber yarn and the black fiber yarn may be mixed and used in any of the following ways, such as pulling the yarns together, twisting them together, or blending them. Since the covered elastic yarn of the present invention is preferably used for swimwear, sportswear, pantyhose, tights, etc., it is practical to use nylon yarn as the other fiber yarn.

The covered elastic yarn of the present invention can be manufactured using a known covering yarn manufacturing apparatus. In this case, it may be covered in one stage, or it may be covered in two or more stages. When covering in two or more stages, the first stage is made of 100% high-strength fibers or a covering component yarn that partially contains such fibers, and the second stage is made of 100% other fibers. There is no problem with a structure in which a coating component yarn of the following type is used.

In other words, in this case, the three-layer structure includes an elastic fiber yarn as a core component, a covering layer containing high-strength fibers as an intermediate layer on the outside, and an outermost covering layer made of other fibers. This is the result. Of course, even in this case, the outermost covering layer may contain some or all of the high-strength fibers.

The high-strength fibers with a tensile strength of 12 g/d or more used in the present invention are not particularly limited, but polyvinyl alcohol-based fibers are preferably used as fibers that relatively easily achieve such high strength. It is. The method for producing the high-strength polyvinyl alcohol fiber is not particularly limited; , and it is industrially preferable to use a fiber obtained by a dry/wet spinning method because it is easier to produce the fiber than by other gel spinning methods or liquid crystal spinning methods.

(Example) Hereinafter, the specific structure and effects of the present invention will be explained using examples.

Polymerization 11ff 2600 fully carbonated polyvinyl alcohol (hereinafter referred to as PVA) was mixed with dimethyl sulfoxide (
DMSO> to make a 15% solution, which was used as a spinning stock solution. This stock solution was subjected to dry/wet spinning using a methanol coagulation bath containing 010% DMS. The space length between the mouthpiece surface and the coagulation bath was 5 mm. The obtained undrawn yarn was washed with methanol to remove DMSO, and then heated at 220°C.
The film was hot-stretched in an air bath at a stretching ratio of 26.5 times.

The obtained drawn yarn was 3 denier, 5 filaments, tensile strength 18.1/d, elongation 3.9%, and elastic modulus 395 g.
I got it with /d.

2 of the remaining urethane elastic fiber yarn as the core component fiber yarn
Using 0 denier yarn, prepare the above-mentioned high-strength PVA fiber yarn as the first covering yarn, and prepare 10 denier, 7 filament nylon yarn as the second covering yarn to create SR type covering manufactured by Katakai Kikai Kogyo Co., Ltd. Using a machine, 3.2
The above-mentioned high-strength PVA yarn is attached to the above-mentioned polyurethane elastic fiber yarn which has been drafted twice in the Z direction.
times/m, and further 205 times in the S direction with the above nylon thread.
The coated elastic yarn of the present invention was prepared by winding the yarn 0 times/m. This covered elastic yarn has a three-layer structure. The physical properties of the coated elastic yarn were measured according to the JIs method and were found to have a tensile strength of 7.9 g/d and an elongation I3 of 112%. Further, the weight ratio of the coating components was approximately 42.6% by weight.

A total of 4 yarns, 2 yarns each of the yarn of the present invention obtained as described above and a 15 denier, 3-filament nylon yarn, were fed to a KT412 model sock knitting machine made by Mizuta Seiki to fabricate a plain knitted fabric. was knitted, and scouring, dyeing, and setting were performed in a conventional manner.

The plain knitted fabric thus obtained had an elongation rate of 117%, an elongation recovery rate of 82%, and a burst strength of 6.4 kg/cd, and was excellent in both stretchability and burst strength.

On the other hand, for comparison, the same nylon yarn (10 denier, 7 filaments) used for the second-stage covering was used instead of the high-strength PVA yarn in the above example, and the same covering machine as in the example was used. A coated elastic yarn was made using the above method. The second-stage covering conditions and the like were the same as in the above example, except that the first-stage covering was performed at 2420 times/m.

The coated elastic yarn thus obtained has a tensile strength of 3°5Q/d.
, the elongation was 120%.

Moreover, the ratio of coating components was about 54.1% by weight.

This yarn was knitted and finished using the same yarn as in the above example to obtain a plain knitted fabric.

The plain knitted fabric thus obtained had an elongation rate of 121%, an elongation recovery rate of 86%, and a burst strength of 3.5 kg/ant.

Comparing the knitted fabric obtained using the yarn obtained according to the present invention and the knitted fabric obtained using the yarn of the comparative example, it was found that the fabric obtained according to the present invention has sufficient bursting strength even if the coating component ratio is small. The synergistic effects of these factors include the fact that fewer coating components are required, that is, the high-strength fiber threads that are the first covering thread need to be thinner, and that the thread surface is smoother. It was suitable for use in pantyhose as it had excellent feel, high fashionability and a small basis weight.

(Effects of the Invention) As described above, the coated elastic yarn of the present invention provides high tear strength in woven fabrics or knitted fabrics while maintaining good stretchability in knitted fabrics for clothing that require stretchability. This makes it possible to obtain a coated elastic yarn of 1q, which achieves high bursting strength.

Alternatively, it is possible to make the fabric thinner while maintaining good tear strength or bursting strength characteristics, and it can be used as a clothing fabric with excellent transparency, and is also lightweight, highly functional, and fashionable. This is a novel coated elastic yarn of great industrial value that can be made into high quality products.

Claims (6)

[Claims] (1) An elastic fiber yarn of 10 denier or more and 250 denier or less is used as a core component, and 10% by weight or more of high-strength fiber with a tensile strength of 12 g/d or more is contained in the elastic fiber yarn as a covering fiber component. A coated elastic yarn characterized in that it is made by winding and covering a fiber component containing 100% by weight or less. (2) Coating elasticity according to claim (1), characterized in that the weight ratio of the core component to the coating component is core component/coating component=(70-5)/(30-95). thread. (3) The coating according to claim (1) or (2), wherein the coating fiber component consists of high-strength fibers having a tensile strength of 12 g/d or more and nylon thread. elastic thread. (4) High-strength fibers with a tensile strength of 12 g/d or more,
The coated elastic yarn according to claim 1, 2, or 3, which is polyvinyl alcohol fiber. (5) The covered elastic yarn according to claim (4), wherein the covered fiber component contains a multifilament yarn made of high-strength polyvinyl alcohol fiber having a tensile strength of 12 g/d or more. . (6) The high-strength polyvinyl alcohol fiber with a tensile strength of 12 g/d or more is made of a polyvinyl alcohol polymer with a degree of polymerization of at least 1500 or more, and
The covered elastic yarn according to claim 4 or 5, which is obtained by a wet spinning method.