JP2003306848A - Clothing knitted or woven fabric having excellent cool feeling property - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clothing raw material which does not cause sweatiness and stickiness even when worn for a long time and has an excellent cool feeling property, especially a clothing knitted or woven fabric suitable for inner uses to be in direct contact with the skins. <P>SOLUTION: This clothing knitted or woven fabric comprising the moisture- absorbing synthetic fibers and solvent-spun cellulose fibers or regenerated cellulose fibers such as rayon is characterized by having a transfer consumption calorie of ≥0.13 W/cm<SP>2</SP>under environmental conditions of 20°C and 65% RH. The moisture-absorbing synthetic fibers each comprises a sheath component comprising a polyamide and a core component comprising a polyalkylene oxide modification product obtained by reacting a polyalkylene oxide and a polyol with an aliphatic diisocyanate compound or the modification product and a polyamide. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knitted woven fabric for clothing, which is suitable for a shirt material having excellent coolness, water absorption and moisture absorption / desorption properties, particularly innerwear which comes into direct contact with the skin.

[0002]

2. Description of the Related Art Synthetic fibers are superior to natural fibers such as cotton, hemp, and wool in strength, abrasion resistance, dimensional stability, wash-and-wear property, quick-drying property, etc. Widely used. However, synthetic fibers
Generally, it does not have the excellent anti-static performance, water absorption performance, moisture absorption and release performance that natural fibers have, and when wearing it in the winter, it causes stuffiness, stickiness, etc. And was inferior in terms of comfort to natural fibers.

In order to solve these problems, attempts have been made to impart water absorption or moisture absorption / desorption properties to synthetic fibers. For example, as a method of imparting the above-mentioned function to nylon fibers and polyester fibers by post-processing, a method of graft-polymerizing vinyl carboxylic acid using a radical initiator or an electron beam (Japanese Patent Laid-Open No. 4-146271 and Japanese Patent Laid-Open No. 4-26271).
No. 272,272) is known, but this method has various problems such as a decrease in fiber strength due to processing, hardening of texture, and lack of durability of effect. Also,
Composite fiber containing polyalkylxylene glycol in the production stage of the raw yarn (JP-A-39-5214), hollow fiber made of a fiber-forming polymer having through grooves from the fiber surface to the hollow portion (JP-A-60- No. 37203),
Microporous fibers obtained by alkali-treating polyester fibers in which an organic sulfonic acid compound is uniformly dispersed (JP-A-60-1).
No. 67969) has been proposed. However, each of these fibers has a low hygroscopic level and does not satisfy both the water absorbing performance and the moisture absorbing performance to a sufficient level at the same time.

In order to solve these problems, a core-sheath composite fiber (Japanese Patent Laid-Open No. 2-99612) is proposed, in which a resin having a water absorption capacity of 10% or more is arranged in the core portion and polyester is arranged in the sheath portion. Has been done. However, although this fiber has sufficient water absorbency and hygroscopicity at the production stage of the raw yarn, the sheath portion of the fiber is damaged during dyeing finish processing, particularly during weight reduction processing,
There is a problem that the hygroscopic resin, which is the core component, is eluted and the initial water absorption and hygroscopicity are impaired. As described above, it is difficult to impart sufficient water absorption and hygroscopicity to the synthetic fiber, and almost no practical examples have been recognized yet.

On the other hand, regenerated cellulose fibers and solvent-spun cellulose fibers have characteristics such as dry feeling and water absorption.
Although it is widely used in the field of clothing, it has the drawback of weak strength and lack of dimensional stability.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and provides a knitted woven fabric for clothing having a cool feeling when worn and having a high degree of water absorption and moisture absorption. It is a technical issue to provide.

[0007]

The present invention is to solve the above problems and provides a knitted woven fabric comprising hygroscopic synthetic fibers and regenerated cellulose fibers or solvent-spun cellulose fibers. A knitted fabric for clothes with excellent coolness, characterized by having a transition heat consumption amount of 0.13 W / cm ² or more defined in the text under environmental conditions of ℃ × 65% RH, and a hygroscopic synthetic fiber Polyalkylene oxide modified product obtained by reaction of alkylene oxide with polyol and aliphatic diisocyanate compound or core-sheath composite type moisture absorbing / releasing synthetic fiber composed of a core component composed of the modified product and polyamide and a sheath component composed of polyamide The gist of the knitted woven fabric for clothing is excellent in coolness.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below. The hygroscopic synthetic fiber applied in the present invention is a synthetic fiber having a high moisture absorbing / releasing property, and such a synthetic fiber is a fiber produced by blending a compound having a hygroscopic property and a fiber-forming polymer into yarn. A core-sheath composite fiber prepared by blending a compound having a hygroscopic property with a core component or a compound having a hygroscopic property and a fiber-forming polymer as a core component, and using a fiber-forming polymer as a sheath component, is mentioned. From the viewpoint of dyeing fastness and the like, the core-sheath composite fiber is preferably used. Thereby, a high level of water absorption performance and moisture absorption performance can be given to the knitted fabric. Here, as the fiber-forming polymer, nylon 6, nylon 66,
Examples thereof include polyamide such as nylon 46, polyethylene terephthalate, polyester obtained by copolymerizing a polyethylene terephthalate unit with a third component, polyester such as polybutylene terephthalate and polypropylene terephthalate.

As the compound having a hygroscopic property, any compound having a good hygroscopic property and having a small change in color tone may be used, but a polyalkylene oxide obtained by a reaction with a polyalkylene oxide, a polyol and an aliphatic diisocyanate compound. Modified products are preferably used. As the polyalkylene oxide used as a raw material for the modified polyalkylene oxide, polyethylene oxide, polypropylene oxide and a copolymer of the two, polyols such as ethylene glycol, diethylene glycol, and glycols such as propylene glycol, and aliphatic diisocyanate are here. Include aliphatic diisocyanate, but dicyclohexylmethane-
4,4-diisocyanate, 1,6-hexamethylene diisocyanate and the like can be mentioned. When such a polyalkylene oxide modified product is used as a compound having a hygroscopic property, a yellow color resulting from an imide ring formed by a resonance structure between an isocyanate group and an aromatic ring as seen when an aromatic isocyanate compound is used is observed. Deterioration is suppressed, the fiber does not yellow even after long-term use, and a composite fiber having excellent weather resistance can be obtained.

The content of the polyalkylene oxide modified product as the hygroscopic compound of the hygroscopic synthetic fiber in the present invention is preferably in the range of 0.5 to 60% by mass. If the content of the modified polyalkylene oxide is less than 0.5% by mass, the desired hygroscopicity may not be obtained, and if the content exceeds 60% by mass, a problem may occur in the spinnability.

The core-sheath composite ratio in the case of the core-sheath composite fiber varies depending on the polymer used and the like, but is 15 by weight.
It is preferably in the range of / 85 to 85/15, and if the proportion of the core component is smaller than this, hygroscopicity is inferior, and if the proportion of the core component is larger than that, there may occur a problem in spinnability.

Next, regenerated cellulose fibers used in the present invention include rayon, bemberg, cupra and the like. As solvent spun cellulose fibers, natural cellulose is dissolved in a solvent such as N-methylmorpholine-N-oxide. The lyocell spun out can be mentioned.

The hygroscopic synthetic fibers, regenerated cellulose fibers, and solvent-spun cellulose fibers used in the present invention may be long fiber yarns or spun yarns obtained by spinning each short fiber. However, the hygroscopic synthetic fiber is
It is preferably a filament yarn of a core-sheath composite fiber, and it is also preferably used as a crimped yarn which is false twisted.

In the present invention, the hygroscopic synthetic fiber and the regenerated cellulose fiber or the solvent-spun cellulose fiber are used for weaving and weaving. As the weaving and weaving method at that time, these fibers are used individually. A method of interlacing and interweaving at the time of weaving, a method of weaving as a composite mixed yarn in which hygroscopic synthetic fibers and regenerated cellulose fibers or solvent-spun cellulose fibers are compounded by air entanglement, ply twisting, alignment false twist, etc. To be

The knitted fabric of the present invention is required to have a transition heat consumption of 0.13 W / cm ² or more under an environmental condition of 20 ° C. × 65% RH. The higher the amount of heat consumed, the more the heat of the body surface is instantaneously transferred to the side of the knitted fabric, and the cooler feeling is felt. When the consumed heat amount is less than 0.13 W / cm ^2, the heat on the body surface is less likely to move to the side of the knitted fabric, which makes it difficult to obtain a cool feeling when worn. Regenerated cellulose fibers or solvent-spun cellulose fibers have a high water content as a whole, and the high water content affects the feeling of coolness when worn, and thus the heat consumption of transfer, so a woven or knitted fabric that comes into contact with the skin side. By arranging at least 30% or more of the back surface of the above in a structure in which the regenerated cellulose fibers or the solvent-spun cellulose fibers are exposed, it is possible to make the transition heat consumption amount 0.13 W / cm ² or more. The woven or knitted fabric preferably has a structure in which regenerated cellulose fibers or solvent-spun cellulose fibers are in contact with the skin surface more, and specifically, the entire back surface of the woven or knitted fabric is in contact with the skin surface due to a flat structure. Alternatively, the woven or knitted fabric may be arranged on the convex portion of the textured structure on the back surface.

[0016]

A knitted woven fabric comprising hygroscopic synthetic fibers and regenerated cellulose fibers or solvent-spun cellulose fibers as in the present invention, the heat consumption of transition of the knitted woven fabric under an environmental condition of 20 ° C. × 65% RH. Is 0.13 W / cm ² or more, a knitted fabric having a cool feeling when worn and having excellent hygroscopicity and suitable for inner use can be obtained.

[0017]

EXAMPLES Next, the present invention will be described more specifically by way of examples. In addition, the measurement and evaluation of the performance in the examples were performed by the following methods. (1) Moisture content Drying at a temperature of 105 ° C. for 2 hours to measure the weight W, and then humidity control for 2 hours at 34 ° C. and 90% relative humidity to measure the weight V. The rate was calculated. Moisture content (%) = [(V−W) / W] × 100 (2) Heat consumption for transfer Using Thermolabo 2 (KES-F-M7) manufactured by Kato Tech Co., environmental conditions of 20 ° C. and 65% relative humidity. Place the sample (6 x 6 cm) on the sample table (Water Box: 22 ° C) with the back side (skin side of clothing) facing up, and place 32 from the top.
The heat flow (W / cm ² ) that transfers from the heat storage plate to the sample side when the heat storage plate (3 × 3 cm, made of pure copper) at 0 ° C. is contacted is measured, and is represented by the peak value. The higher the value of heat consumption for transition, the higher the coolness. (3) An inner shirt cloth was sewn with a wear test sample, and 10 wear monitors had sensory evaluations of the coolness, stuffiness and stickiness when worn in the following 3 grades. Therefore, it was used as an evaluation of the sample. ◯: Both cool feeling and hygroscopicity are excellent. Δ: Either coolness or hygroscopicity is inferior in performance. X: Coolness and hygroscopicity are poor.

Example 1 Concentration 0.5 g / deciliter in m-cresol solvent,
Polyalkylene modified product (85 g of water) having a relative viscosity of 2.6 measured at a temperature of 20 ° C. is a reaction product of 85 parts by mass of polyethylene oxide, 1,4-butanediol, and dicyclohexylmethane 4,4 diisocyanate. No. 35g) a mixture of 15 parts by mass as a core component, nylon 6 having a relative viscosity of 2.6 as a sheath component, a ratio of core component / sheath component of 50/50, and a core having 24 discharge holes. Melt-spinning was performed at a spinning temperature of 255 ° C. using a sheath-type composite spinneret, and the spun yarn was blown with air at 18 ° C. to cool it, and after applying an oil agent, 1300 m
It is wound up at a speed of 3.0 / min and stretched by 3.0 times to obtain 78 dtex /
24f of core-sheath type hygroscopic synthetic fiber was obtained. The moisture content of the obtained core-sheath hygroscopic synthetic fiber at 20 ° C. and 65% relative humidity was 4.2%. Next, the hygroscopic synthetic fiber and the rayon filament yarn of 84 dtex / 30f obtained by the viscose method are fed to every other yarn with the interlock structure using the 28 gauge double-sided knitting machine. After knitting the yarn, knitting was performed under ordinary dyeing finishing conditions to obtain a knitted fabric of the present invention.

Example 2 The hygroscopic synthetic fiber and rayon filament yarn used in Example 1 were air-entangled (interlaced), and then 1200
A twist / m twist was applied to obtain a composite mixed yarn. Next, using a 22-gauge double-sided knitting machine, after knitting a knitted fabric of 100% of the above-mentioned composite mixed yarn with an interlock structure, dyeing finishing is performed under normal dyeing finishing processing conditions to obtain a knitting fabric of the present invention. It was

Comparative Example 1 Example 1 was repeated except that the rayon filament used in Example 1 was replaced with a normal nylon filament 78dtex / 24f.
A knitted fabric of Comparative Example 1 was obtained by the same method as described above.

Comparative Example 2 Comparative Example 2 was carried out in the same manner as in Example 1 using 100% of the normal polyester filament yarn 84dtex / 36f.
I got a knit. However, the dyeing process was performed according to the dyeing conditions of polyester. Examples 1 and 2 obtained
Table 1 shows the evaluation results of the knitted fabrics of Comparative Examples 1 and 2.

[0022]

[Table 1]

As is clear from Table 1, the knitted fabrics of Examples 1 and 2 had excellent hygroscopicity and coolness, and were suitable for clothing materials, especially for innerwear. On the other hand, the knitted fabric of Comparative Example 1 was excellent in hygroscopicity, but was inferior in cool feeling when worn. The knitted fabric of Comparative Example 2 was inferior in both hygroscopicity and coolness.

Example 3 Using the composite mixed yarn of hygroscopic synthetic fiber and rayon filament yarn used in Example 2 as both warp and weft, the warp density is 98 / 2.5 cm, the weft density is 62 / A woven fabric of 2.5 cm and a flat structure and made of 100% composite mixed yarn was woven and dyed and finished according to ordinary dyeing processing conditions to obtain a woven fabric of the present invention. The obtained woven fabric had excellent hygroscopicity as in Example 2,
It had a cool feeling.

[0025]

EFFECTS OF THE INVENTION According to the present invention, it is possible to provide a garment material suitable for an inner use, which is excellent in cool feeling when worn and which is excellent in wearing comfort without stuffiness and stickiness in clothes due to high hygroscopicity. it can.

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3B029 HB02                 4L002 AA00 AA06 AB02 AB05 AC00                       BB01 EA03 FA03                 4L041 AA07 BA02 BA05 BA21 BC02                       BD14 BD20 CA21 CA35 DD01                       DD03 DD18                 4L048 AA13 AA24 AA54 AB07 AB18                       AC15 CA07 DA01 DA03

Claims (2)

[Claims] 1. A knitted fabric comprising hygroscopic synthetic fibers and regenerated cellulose fibers or solvent-spun cellulose fibers, the transitional consumption of which is defined herein under environmental conditions of 20 ° C. × 65% RH. A knitted woven fabric for clothing having an excellent coolness, which has a calorific value of 0.13 W / cm ² or more. 2. A hygroscopic synthetic fiber is composed of a modified polyalkylene oxide obtained by the reaction of a polyalkylene oxide with a polyol and an aliphatic diisocyanate compound, or a core component composed of the modified product and polyamide, and a sheath component composed of the polyamide. The knitted woven fabric for clothing having excellent coolness according to claim 1, which is the core-sheath composite type hygroscopic synthetic fiber.