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Method of producing cellulosic sheaths around fibers of texitile and textils produced thereby

A fiber, skin technology, applied in the field of carbohydrate skins or encapsulation layers, can solve the problems of slow, long reaction time and expensive methods

Inactive Publication Date: 2004-08-11
NANO TEX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A number of adhesion promoters have been proposed with varying degrees of success, but the long reaction times required for acid curing make the process expensive and slow

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

[0072] A. Recipe:

[0073] The following aqueous solutions were produced; 7 wt % ultra-low viscosity sodium carboxymethyl cellulose (degree of substitution 0.7, Aldrich Chemical Co., Milwaukee, WI), 25 wt % Freerez NFR (BFGoodrich, Charlotte, NC), 5 wt % Freecat 9 (BFGoodrich) and 0.5 wt% Ethox DA-9 (Ethox Chemicals, Greenville, SC). The final pH was 3.47.

[0074] B coating:

[0075] Sand milled polyester from tan Burlington Industries (Greensboro, NC) Model 2606 was dipped in the above solution and padd to 93% pick-up, dried at 250°F for 5 minutes, and dried at 390°F Cure for 30 seconds. The treated samples were then tested as described above.

[0076] C result:

[0077] Wetting time: 1HL: 2.8 seconds

[0078] 10HL: 12.0 seconds

[0079] 20HL: 20.7 seconds

[0080] Weighted wt%: 1HL: 5.5%

[0081] 20HL: 4.7%

Embodiment 2

[0083] A. Recipe:

[0084] Using 7wt% ultra-low viscosity carboxymethyl cellulose sodium salt (degree of substitution 0.7, Aldrich Chemical Co.), 6wt% BTCA (1,2,3,4-butanetetracarboxylic acid, Aldrich Chemical Co.), 4wt% monohydrate Aqueous solutions were prepared from sodium hypophosphite (Atlas Chemical, Inc., San Diego, CA) and 0.5 wt% Ethox DA-9 (Ethox Chemicals). The final pH was 3.30.

[0085] B coating:

[0086] A sanded tan Burlington Industries polyester, model 2606, was dipped in the above solution and paddled to 85% pick-up, dried at 250°F for 5 minutes, and cured at 390°F for 30 seconds. The treated samples were then tested as described above.

[0087] C result:

[0088] Wetting time: 1HL: 3.7 seconds

[0089] 10HL: 6.0 seconds

[0090] 20HL: 5.3 seconds

[0091] Weighted wt%: 1HL: 7.6%

[0092] 20HL: 4.8%

Embodiment 3

[0094] A. Recipe:

[0095] Using 7wt% ultra-low viscosity sodium salt of carboxymethylcellulose (degree of substitution 0.7, Aldrich Chemical Co.), 4wt% 75,000MW poly(acrylic acid) (Aldrich Chemical Co.) and 0.5wt% Ethox DA-9 (Ethox Chemicals) An aqueous solution is prepared. The final pH was 3.31.

[0096] B coating:

[0097] Sanded navy Burlington Industries Polyester Type 2606 was dipped in the above solution and paddled to 85% pick-up, dried at 250°F for 5 minutes and cured at 390°F for 30 seconds. The treated samples were then tested as described above.

[0098] C result:

[0099] Wetting time: 1HL: 0.5 seconds

[0100] 5HL: 0 seconds

[0101] 10HL: 0 seconds

[0102] 15HL: 0.8 seconds

[0103] 20HL: 1.5 seconds

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Abstract

The present invention is directed to a method for treating a synthetic, man-made, or natural fiber substrate to create a permanently attached carbohydrate sheath around the fibers of the substrate. Such a treatment gives a composite fibrous substrate that exhibits the most desirable characteristics of the fiber core coupled with the most desirable characteristics of the carbohydrate sheath. It is also possible to apply this technology to individual synthetic fibers or yarns, if desired, before weaving, knitting, stitch-bonding or other method of woven or non-woven substrate formation.

Description

Background of the Invention [0001] In recent years, especially in apparel, consumers have reduced the use of synthetic fabrics and blends in favor of 100% cotton fabrics that provide the best look and comfort. But using 100% cotton yarns and fabrics also has disadvantages, including a tendency to shrink and wrinkle. The most common method of controlling cotton yarn shrinkage and wrinkling in garment outerwear is to crosslink cotton fibers with formaldehyde-based resins. But formaldehyde is considered a harmful chemical and is handled dangerously during processing. Since formaldehyde is a known carcinogen, fabrics in contact with the body are also considered hazardous. In addition, formaldehyde-based resins, when used to control shrinkage and wrinkling in cotton or cotton blend fabrics, reduce the abrasion resistance and strength properties of the fabrics and make them more susceptible to abrasion, abrasion, hole formation and wrinkle deformation. Although non-formaldehyde r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/03D06M15/09
CPCD06M15/09D06M15/03
Inventor D·A·奥弗德D·B·米尔沃德W·小怀尔D·S·索恩
Owner NANO TEX