Knitted fabric exhibiting reversibly changeable air permeability

An air permeability and textile technology, applied in the field of textiles, can solve the problems of small shape change, insufficient quick-drying, water absorption, and insufficient hygroscopicity, so as to prevent excessive drop in body temperature, maintain a comfortable environment, and increase air permeability Effect

Inactive Publication Date: 2007-05-30
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in this method, both polyester and nylon have insufficient water absorption and hygroscopicity, the shape change caused by humidity and moisture is small, the change of the air permeability of the textile is insufficient, and the water absorption and quick-drying properties are not sufficient. full
[0006] Also, Cited Document 2 discloses a textile using cellulose acetate fibers obtained by alkali-treating fibers exhibiting reversible crimping properties with a difference in the average degree of substitution equal to or greater than the specified The cellulose acetate of the highest value is compounded and spun fibers side by side according to the specified weight ratio, but the dimensional stability as a textile cannot be said to be sufficient due to the reversible change of the crimp caused by humidity, and the quick-drying sex is not enough

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] The cellulose triacetate with an average degree of substitution of 2.91 and the cellulose diacetate with an average degree of substitution of 2.41 were respectively dissolved in a mixed solvent of 91% by weight of dichloromethane / 9% by weight of methanol to prepare a concentration of cellulose triacetate of 22% by weight spinning dope and spinning dope with a cellulose diacetate concentration of 22% by weight. Using these spinning dopes, a cellulose diacetate component and a cellulose triacetate component were co-spun in parallel at a weight ratio of 50:50 by a dry spinning method to obtain filaments of 84 dtex / 20. The obtained composite acetate fiber had a crimp rate of 7% at a humidity of 95%, and a crimp rate of 25% at a humidity of 45%.

[0077] Using the blended yarn obtained by air-blending the acetate fiber and polyester fiber 33dtex / 12 filament, the following double-knit fabric was produced.

[0078] * double knit fabric

[0079] Knitting machine: 30 inches 2...

Embodiment 2

[0092] Using the same blended yarn of composite acetate fiber and polyester fiber as in Example 1, the following drop-needle double-knit fabric was produced, and the same alkali treatment and dyeing process as in Example 1 were performed to obtain a double-knit fabric. The mesh weight of the obtained knitted fabric is 215g / m 2 .

[0093] * Pull-needle double jersey

[0094] Knitting machine: 30 inches 28 gauge

[0095] Knitting structure: the surface layer is a full needle, the back layer is a 1 / 1 pull-needle structure, and the knot is a double-sided tuck

[0096] Silk composition: the surface layer is polyester fiber 110dtex24 filament

[0097] The tuck part is polyester fiber 56dtex24 filament

[0098] The back layer is the above blended silk

[0099] Table 1 shows the evaluation results of the obtained knitted fabrics. The curl form of the composite acetate fiber used on the back changes with the change of humidity, so the air permeability of the knitted fabric chang...

Embodiment 3

[0107] The cellulose triacetate with an average degree of substitution of 2.91 and the cellulose diacetate with an average degree of substitution of 2.41 were respectively dissolved in a mixed solvent of 91% by weight of dichloromethane / 9% by weight of methanol to prepare a concentration of cellulose triacetate of 22% by weight spinning dope and spinning dope with a cellulose diacetate concentration of 22% by weight. Using these spinning stock solutions, by dry spinning method, the cellulose diacetate component and the cellulose triacetate component are composite spun side by side at a weight ratio of 50:50 to obtain a side-by-side composite of 110dtex / 26 filaments. Cellulose acetate fiber. The obtained composite acetate fiber had a crimp rate of 9% at a humidity of 95%, and a crimp rate of 27% at a humidity of 45%.

[0108] Use the blended yarn of the cellulose acetate fiber and the polyester fiber of 33dtex / 8 filaments on the back side, and use the polyester fiber of 110dte...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

A multi-layer woven or kitted fabric exhibiting reversibly changeable air permeability which contains reversibly crimping cellulose acetate fibers exhibiting a percentage of crimp of less than 10 % at a humidity of 95 % or above and a percentage of crimp of 20 % or above at a humidity of 45 % or below and which has a basis weight of 100 to 350 g/m<2>. When the water content of the fabric is enhanced by the absorption of water or moisture, the air permeability of the fabric increases to inhibit in-clothes stuffiness or stickiness due to sweat and in-clothes temperature rise, while when the fabric has discharged the water into the outside environment, the air permeability of the fabric decreases to the original one to prevent the body temperature from lowering excessively because of the heat of vaporization and thus keep the in-clothes environment comfortable.

Description

technical field [0001] The present invention relates to textiles with reversibly variable air permeability. Background technique [0002] In recent years, fashion trends and consumer demands have been extremely diverse. In order to provide textiles for clothing that meet consumer expectations, further functions such as hand improvement and individualization are required. Therefore, it is hoped that there will be a kind of textiles for clothing. As one of its characteristic functions, as the temperature and humidity in the clothes change, the air permeability of the clothes will also change reversibly, thereby regulating the temperature and humidity in the clothes. , adjust to always comfortable state. [0003] At present, it is known that natural fibers such as cotton and wool have the characteristics of reversible change with moisture or water, but because such materials have strong water retention, the change between drying and water retention is not rapid, and the change...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04B1/00D04B1/16D01F8/02D03D11/00D03D15/00D03D15/225D03D15/49
Inventor 黑田久田中光男盐月光昭土田晃启
Owner MITSUBISHI CHEM CORP
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