JP2007332485A - Composite spun yarn having excellent abrasion resistance and woven or knitted fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a composite spun yarn that has both water absorption properties and moisture-absorbing and releasing properties, eliminates water content recovery after water absorption, excellent abrasion resistance, hardly causes abrasion breakage, fluff and pill of fabric in use as clothes and even repeated wearing and washing and a woven or knitted fabric using the composite spun yarn. <P>SOLUTION: The composite spun yarn of core-sheath structure arranges a spun yarn having water absorption properties and moisture absorbing and releasing properties in a core part and a filament yarn in a sheath part and has a single filament fineness of the filament yarn of ≥3 dtex and excellent abrasion resistance. The composite spun yarn having excellent abrasion resistance is preferably formed by covering the outer periphery of the core part with a multifilament yarn containing ≥1.0 mass% of transparency-preventing particle and covering the outer periphery with a filament yarn having a single filament fineness of ≥3dtex to form a sheath part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a composite spun yarn having good water absorption and moisture absorption / release properties and excellent wear resistance.

  Yarn materials are roughly classified into long fibers (filament yarns) and short fibers (spun yarns) according to their forms. Filament yarns such as polyester and nylon are typical examples, and the structure is excellent in abrasion resistance and strength, but the inter-fiber gap is coarser than that of spun yarn. Inferior.

  On the other hand, since the spun yarn is made of bundling short fiber cotton, moisture is maintained in the fine gaps between the fibers, and the water retention is excellent, but the moisture retained is returned to the outside by pressure or the like. . In addition, since the structure is inferior in wear resistance, there is a drawback in that the wear of the fabric, fluff, and fluff are likely to occur if it is repeatedly used and worn on clothes.

  Various proposals have heretofore been made in order to eliminate the above-mentioned conflicting disadvantages between filament yarn and spun yarn. For example, cotton yarn, which is representative of cellulosic fibers, is the most commonly used material for spun yarns, and has excellent water absorption and texture, but to improve shape stability, quick drying, strength, etc. In addition, materials blended with short fibers such as polyester and nylon are generally widely used, and various methods of blending have been proposed.

In other words, not only blending at the roving stage, but also a spinning / twisting system in which the individual rovings are individually twisted at the spinning stage, and a core sheath in which one material is used as a core material and the periphery is covered with the other material. There are various methods such as methods. A blended yarn obtained by these methods, for example, a long and short composite spun yarn in which the filament yarn described in Patent Document 1 or Patent Document 2 is used as a core material and its periphery is covered with cellulose short fibers is basically cellulose. The properties of filament yarn are imparted while taking advantage of the texture of the base fiber.
Japanese Patent Application Laid-Open No. 11-217736 JP-A-11-323688

  If the above-mentioned long and short composite spun yarn is used, the return of moisture after water absorption, the wear out of the fabric, the generation of fluff and fluff can be reduced to some extent, but the effect is small, and it has both water absorption and moisture absorption and desorption properties. , Composite spun yarn that eliminates moisture return after water absorption, has good wear resistance, and does not generate worn out fabrics or fluff or fluff even after repeated use and washing. Has not yet been proposed.

  The present invention solves the above-mentioned problems, has both water absorption and moisture absorption and desorption, eliminates the return of moisture after water absorption, has good wear resistance, and is repeatedly used for clothes and worn and washed. However, it is a technical problem to provide a composite spun yarn excellent in abrasion resistance in which the fabric is not worn out, fluffed or fluffed, and a woven or knitted fabric using the composite spun yarn.

  As a result of intensive studies to solve the above problems, the present inventors have reached the present invention.

That is, the gist of the present invention is as follows.
(1) A core-sheath composite spun yarn in which a spun yarn having water absorption and moisture absorption / desorption properties is arranged in the core portion and a filament yarn is arranged in the sheath portion, and the single yarn fineness of the filament yarn is 3 dtex or more A composite spun yarn excellent in abrasion resistance characterized by being.
(2) A composite spun yarn having a core-sheath structure, wherein the core portion is formed of spun yarn having water absorption and moisture absorption / release properties, and the sheath portion contains 1.0% by mass or more of anti-transparent particles. A composite spun yarn excellent in wear resistance, characterized in that it is formed by covering the outer periphery of a core portion with a multifilament yarn and further covering the outer periphery with a filament yarn having a single yarn fineness of 3 dtex or more.
(3) The spun yarn having water absorbency and moisture absorption / release properties of the core occupies 10 to 95% by mass of the total composite spun yarn, and the sheath is formed of polyester yarn, forming the outermost layer of the sheath The composite spun yarn having excellent abrasion resistance according to the above (1) or (2), wherein the polyester yarn is a monofilament yarn having a fineness of 10 dtex or more.
(4) The composite spun yarn excellent in abrasion resistance according to any one of (1) to (3) above, wherein the sheath is coated on the core by a covering method.
(5) A knitted or knitted fabric using at least a part of the composite spun yarn excellent in abrasion resistance described in any one of (1) to (4) above, and the physical properties of the fabric are 10 times of raw fabric and washers Both after (F-2 method / tumble drying) are pilling (JIS L-1076A method) grade 4 or higher and snugging (JIS L-1058 D-1 method) grade 3.5 or higher. Woven knitted fabric with excellent wear characteristics.

  The composite spun yarn having excellent wear resistance according to the first and second aspects of the present invention includes a spun yarn having water absorption and moisture absorption and desorption properties in the core portion, and a filament yarn having a single yarn fineness of 3 dtex or more in the sheath portion. Therefore, the woven or knitted fabric using this composite spun yarn has both water absorption and moisture absorption and release, the water return after water absorption is eliminated, and the wear resistance is good. Even if wearing and washing are repeated, the wear of the fabric, fluff and fluff are hardly generated, and the appearance is not impaired.

  Further, like the second composite spun yarn of the present invention, a multifilament yarn containing 1.0% by mass or more of anti-transparent particles is interposed between the spun yarn of the core portion and the filament yarn of the sheath portion. In addition to the above-mentioned advantages, the fluff of the core spun yarn is further suppressed to reduce the generation of pills, and further, the anti-slipping property and the ultraviolet blocking effect are improved. Is prevented from being seen through, and it is possible to further protect the skin from ultraviolet rays.

  Hereinafter, the present invention will be described in detail.

  The composite spun yarn having excellent wear resistance according to the first and second aspects of the present invention (hereinafter sometimes referred to as composite spun yarn) is obtained by coating a spun yarn having water absorption and moisture absorption / release properties with a filament yarn. Thus, wear resistance and washing resistance are imparted while maintaining water absorption and moisture absorption and desorption.

  In the present invention, the material of the spun yarn having water absorption and moisture absorption and desorption properties for forming the core is selected from cellulose fibers such as cotton, hemp, viscose rayon, bamboo, and purified cellulosic fibers (lyocell), wool, and cashmere. Further, protein fibers such as silk, and synthetic fibers (but short fibers) such as nylon, polyester, polylactic acid and the like containing water absorbing / absorbing / releasing components can be employed. Among them, the composite spun yarn of the present invention is easy to handle and has excellent heat resistance, texture, water absorption and moisture absorption and moisture absorption considering that the spun yarn and filament yarn are combined and dyed. Cellulosic fibers, particularly cotton, are preferred.

  As the material of the spun yarn having water absorption and moisture absorption and desorption properties that form the core portion, only a material having water absorption and moisture absorption and desorption properties may be used. For example, by mixing polyester short fibers, shrinkage due to washing It is possible to reduce the strength reduction.

  The spun yarn having water absorption and moisture absorption / release properties of the core portion preferably occupies 10 to 95% by mass, particularly 30 to 80% by mass of the total composite spun yarn, and when the proportion of the spun yarn is less than 10% by mass, Water absorption and moisture absorption / release properties tend to decrease. If the amount exceeds 95% by mass, the coverage with the filament yarn is reduced, and the wear resistance is likely to decrease.

  Next, examples of the filament yarn that forms the sheath portion of the composite spun yarn of the present invention include nylon yarn and polyester yarn. Polyester yarn, particularly polyethylene terephthalate (especially heat setability, heat resistance, strength, etc.) (Hereinafter referred to as PET)) Yarn is preferred.

  Moreover, in order to improve the abrasion resistance of the composite spun yarn, it is preferable that the filament yarn forming the outermost layer of the sheath portion has a single yarn fineness and a small number of filaments. The single yarn fineness is preferably 3 dtex or more. In the present invention, it is particularly preferable to employ a monofilament yarn. In this case, the single yarn fineness is preferably 10 dtex or more.

  In the composite spun yarn of the present invention, the covering rate of the sheath portion with respect to the core portion is not particularly limited. However, if the covering rate is too small, the coating amount of the core portion is insufficient, so that the wear resistance is reduced and the covering rate is reduced. If is too large, the water absorption and moisture absorption / desorption properties tend to decrease, and therefore the coverage is preferably selected in consideration of the desired wear resistance and the level of water absorption and moisture absorption / desorption.

  Further, as in the second composite spun yarn of the present invention, the core is made of a multifilament yarn containing 1.0% by mass or more, preferably 1.2 to 4.0% by mass of anti-transparent particles as a sheath part. If the outer periphery of the portion is covered and further formed by covering the outer periphery with a filament yarn having a single yarn fineness of 3 dtex or more, the effect of suppressing the fluff of the spun yarn at the core and preventing the generation of fluff is further improved. . Furthermore, the see-through of the fabric is suppressed, and the effect of shielding ultraviolet rays harmful to the human body is improved.

  Examples of the anti-transparent particles contained in the multifilament yarn include titanium compounds such as titanium dioxide, and the outer periphery of the core is coated with the multifilament yarn containing 1.0 mass% or more of anti-transparent particles. Thus, the prevention of see-through and the ultraviolet shielding effect are improved.

  When the composite spun yarn of the present invention is produced, the filament yarn or multifilament yarn that serves as the sheath for the spun yarn that is the core portion is coated with a twisting method, a single covering method, a double covering method, or a filament yarn. Various methods such as a method of inserting spun yarn can be used at the place where they are made, but a covering method that is simple in terms of equipment and suitable for improving wear resistance is preferable. In particular, as in the case of the second composite spun yarn, the outer periphery of the core portion is covered with a multifilament yarn containing anti-transparent particles, and the outer periphery is further covered with a filament yarn having a single yarn fineness of 3 dtex or more. When forming the portion, if a double covering method in which the twist direction is reversed is used, the torque of the yarn can be suppressed and the wear resistance can be further improved.

  The preferred number of twists when the spun yarn of the core portion is covered with the filament yarn to form the sheath portion needs to be appropriately adjusted according to the thickness of the yarn to be used, but the spun yarn of the core portion is 20 to 20 When the filament yarn to be coated is about 20 to 10 dtex, the number of twists is preferably about 500 to 1000 T / m. If the number of twists is less than 500 T / m, the wear resistance tends to decrease due to insufficient coating, and if it exceeds 1000 T / m, the cost increases, and problems such as a decrease in strength and an increase in torque tend to occur.

  Next, the woven or knitted fabric excellent in abrasion resistance of the present invention (hereinafter sometimes referred to as woven or knitted fabric) will be described. The knitted or knitted fabric of the present invention is obtained by using the above-described first or second composite spun yarn excellent in abrasion resistance as at least a part thereof, and the physical properties of the fabric are 10 times for the raw fabric and the washer washing ( In any case after F-2 method / tumble drying), pilling (JIS L-1076A method) is grade 4 or higher, preferably 4, grade 5 or higher, and snugging (JIS L-1058 D-1 method) is grade 3.5. As mentioned above, Preferably it is a 4th grade or more. That is, the fact that the woven or knitted fabric is excellent in wear resistance means that it is difficult to cause pilling (pills due to wear) and snugging (thread removal due to catching), and thus satisfies the above numerical range. It is preferable.

  In general, woven and knitted fabrics are used while being worn, used and washed repeatedly. However, the woven and knitted fabrics of the present invention have the above-described pilling characteristics and snuggling characteristics even after 10 washes (F-2 method / tumble drying). Therefore, even if it is used for clothing and repeatedly worn and washed, it is difficult for the fabric to be worn out, fluffed or fluffed, and the appearance is not impaired.

  In order to impart the above-mentioned characteristics to the woven or knitted fabric of the present invention, the above-described first or second composite spun yarn of the present invention may be used for at least part of the knitted or knitted fabric, and the above characteristics are satisfied. Although other yarns may be used in combination, the composite spun yarn of the present invention is preferably used in an amount of 60% by mass or more, and most preferably 100% by mass.

  The woven or knitted fabric of the present invention can be obtained by weaving and knitting with a general structure such as woven fabric, warp knitting and circular knitting using at least a part of the composite spun yarn of the present invention. At that time, if weaving and knitting at a high density using a structure having more knots, and then relaxing in a liquid dyeing machine at the beginning of the dyeing process, the wear resistance can be further improved. The temperature at this time is preferably 100 to 130 ° C. If this relaxation treatment is insufficient, the yarn shrinks insufficiently and tends to cause shrinkage failure and wear resistance reduction after forming a woven or knitted fabric.

Next, the present invention will be specifically described with reference to examples.
In the examples, each physical property was measured and evaluated as follows.

(1) Washing shrinkage rate (%)
It was performed according to JIS L-1018 F-2 method / tumble drying.
(2) Pilling (class)
It carried out according to JIS L-1076A method.
(3) Snugging (class)
It carried out according to JIS L-1058 D-1 method.
(4) Appearance change after washing The fabric after the operation of JIS L-1018 F-2 method / tumble drying 10 times was visually evaluated in two stages, “no change” and “generation of pills”.

(5) Sweat absorbency A T-shirt using a cloth as a sample was worn and evaluated according to the following three stages based on the body sensation.
○: Good absorption and comfort △: Slightly poor absorption ×: Uncomfortable absorption and uncomfortable (6) Return of water after water absorption The following three levels were evaluated based on the touch of the water droplets on the sample fabric .
○: Low moisture return △: Slight moisture return ×: There is considerable water return (7) Anti-transparency Tendon knitted fabric (comparative example 1) using an equal amount blended cotton and polyester yarn as a standard The following three levels were visually evaluated.
○: Not transparent than the standard △: Standard level ×: Transparent from the standard

Example 1
Using a cotton 40 single yarn for the core, a 22 dtex PET monofilament yarn as the sheath and an upper twist yarn, using a covering machine manufactured by Kataoka Machine Industry Co., Ltd., a yarn speed of 20 m / min, Covering was performed with an upper twist of 650 T / m each as a Z twist to obtain a 30th covering yarn (composite spun yarn) of 25% by mass of PET and 75% by mass of cotton.

  Using this composite spun yarn as a supply yarn, knitting was performed using a 30-inch 20-gauge single circular knitting machine to obtain a tense knitting machine with a density of 32 wale / inch and 51 course / inch. This raw machine was relaxed at 130 ° C. by a liquid dyeing machine, subjected to bleaching and mercerization, and then set at 180 ° C. using a tenter. Subsequently, after dyeing with a liquid dyeing machine, the sheet was set again at 160 ° C. using a tenter to obtain a woven fabric with a density of 34 wale / inch and 54 course / inch.

(Example 2)
Kataoka Machine Industry uses a cotton 40 single yarn for the core, a PET false twisted yarn 84dtex / 72f containing 2% by mass of titanium dioxide fine particles as the bottom twisted yarn for the sheath, and a 22dtex PET monofilament yarn as the upper twisted yarn. Using a company-made covering machine, covering is performed with a yarn speed of 20 m / min, a lower twist of S twist 600 T / m, and an upper twist of Z twist 650 T / m, covering 23% with 45% PET and 55% cotton. A yarn (composite spun yarn) was obtained.

  Except for using this composite spun yarn, knitting and dyeing finishing were performed in the same manner as in Example 1 to obtain a woven fabric with a density of 34 wales / inch and 54 courses / inch.

(Comparative Example 1)
Knitting and dyeing finishing were performed in the same manner as in Example 1 except that 30% single yarn blended yarn of 50% by weight of PET and 50% by weight of cotton was used. Tendon knitting with a density of 34 wale / inch and 54 course / inch I got the ground.

(Comparative Example 2)
Except for using PET false twisted yarn 167dtex / 48f containing 2% by mass of titanium dioxide fine particles, knitting and dyeing finishing were carried out in the same manner as in Example 1, with a density of 34 wale / inch and 54 course / inch. Tengu knitted fabric was obtained.

  Table 1 shows the evaluation results of pilling, snacking, etc. of the knitted knitted fabric obtained in Examples 1-2 and Comparative Examples 1-2.

  As can be seen from Table 1, the woven fabrics obtained in Examples 1 and 2 have good pilling and snuggling before and after washing, excellent wear resistance and durability, and small shrinkage in washing, The appearance after washing was good. Moreover, there was little return of moisture after perspiration, and it could be used comfortably.

  Moreover, in addition to the above-mentioned advantages, the tentacle knitted fabric (Example 2) using a composite spun yarn in which the outer periphery of the core portion is coated with a PET false twisted yarn containing titanium dioxide fine particles has the above-mentioned advantages and prevents the fabric from seeping through. In addition, the effect of shielding ultraviolet rays harmful to the human body was improved.

On the other hand, the tenshi knitted fabric according to Comparative Example 1 using a blended yarn of PET and cotton has a large washing shrinkage, poor appearance after washing, and pills are formed, and further, pilling and snacking are poor and wear-resistant. And its durability was inferior. In addition, the knitted fabric according to Comparative Example 2 using the PET false twisted yarn containing fine titanium dioxide particles was poor in comfort because it was poor in sweat absorption and moisture returned after water absorption.

Claims (5)

  A core-sheath composite spun yarn in which a spun yarn having water absorption and moisture absorption / desorption properties is arranged in the core portion and a filament yarn is arranged in the sheath portion, and the filament yarn has a single yarn fineness of 3 dtex or more. A composite spun yarn with excellent wear resistance.   A multi-filament yarn having a core-sheath structure, wherein the core portion is formed of a spun yarn having water absorption and moisture absorption / release properties, and the sheath portion contains 1.0% by mass or more of anti-transparent particles. A composite spun yarn excellent in wear resistance, characterized in that the outer periphery of the core is covered with a filament yarn having a single yarn fineness of 3 dtex or more.   Polyester yarn forming the outermost layer of the sheath portion, wherein the spun yarn having water absorption and moisture absorption and moisture absorption at the core occupies 10 to 95 mass% of the total composite spun yarn, and the sheath portion is formed of polyester yarn. The composite spun yarn excellent in abrasion resistance according to claim 1 or 2, wherein the fine yarn is a monofilament yarn having a fineness of 10 dtex or more.   The composite spun yarn excellent in abrasion resistance according to any one of claims 1 to 3, wherein the sheath portion is coated on the core portion by a covering method. A woven or knitted fabric using the composite spun yarn excellent in abrasion resistance according to any one of claims 1 to 4 as at least a part thereof, and the physical properties of the fabric are 10 times of raw fabric and washers (F-2 method / Weaving excellent in abrasion resistance, characterized by pilling (JIS L-1076A method) grade 4 or higher and snugging (JIS L-1058 D-1 method) grade 3.5 or higher after either tumble drying) knitting.