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A kind of preparation method of ultra-thin naked ammonia fabric

An ultra-thin, naked ammonia technology, applied in the field of textile fabrics, can solve the problems of smoothness, high elasticity, inconvenience of moisture absorption and ventilation, and inability to use naked ammonia. The effect of high mechanical strength

Active Publication Date: 2019-01-22
HONGJI UNDERWEAR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength of spandex is low, and it is generally not used alone, but is mixed into the fabric in a small amount to form a core-spun yarn with spandex as the core yarn, or a twisted yarn formed by merging and twisting with other fibers. Although it is compatible with the performance of spandex and other fibers, it still does not take advantage of the smoothness and high elasticity of naked spandex fabrics
[0003] The invention patent with the patent application number 201310388938.0 discloses a fabric combination of superelastic random deformation seamless knitted underwear. Unable to use naked ammonia
In order to use naked ammonia, spandex fibers with high denier are often used, which increases the thickness of the fabric, making it difficult to absorb moisture and breathe freely.

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

[0026] A preparation method of a super-elastic naked ammonia fabric: the surface layer is made of nylon yarn, the inner layer is made of ultra-thin spandex yarn, and eight yarn feeders and eight-way yarn feed are used to weave. The eight yarn feeders of No. 2 wear ultra-thin spandex yarn. No. 8 yarn feeders are all made of nylon yarn;

[0027] The ultra-thin spandex yarn is prepared by the following method:

[0028] A, the raw material polytetrahydrofuran ether glycol PTMG and 4,4-diphenylmethane diisocyanate MDI are mixed, react at 87.5 ℃ for 150min, obtain the prepolymer of -NCO termination, wherein the molar ratio of MDI and PTMG is 3.9: 1. The relative molecular weight of the polytetrahydrofuran ether glycol PTMG is 1750;

[0029] B. Add the prepolymer, composite chain extender, and functional additives of step A into the screw extruder, then pelletize underwater, dry, and mature to obtain polyurethane slices, wherein the prepolymer and composite chain extender The mass ra...

Embodiment 2

[0039] A preparation method of a super-elastic naked ammonia fabric: the surface layer is made of nylon yarn, the inner layer is made of ultra-thin spandex yarn, and eight yarn feeders and eight-way yarn feed are used to weave. The eight yarn feeders of No. 2 wear ultra-thin spandex yarn. No. 8 yarn feeders are all made of nylon yarn;

[0040] The ultra-thin spandex yarn is prepared by the following method:

[0041] A, the raw material polytetrahydrofuran ether glycol PTMG and 4,4-diphenylmethane diisocyanate MDI are mixed, react at 75 ℃ for 160min, obtain the prepolymer of -NCO termination, wherein the molar ratio of MDI and PTMG is 3.25: 1. The relative molecular weight of the polytetrahydrofuran ether glycol PTMG is 1500;

[0042] B. Add the prepolymer, composite chain extender, and functional additives of step A into the screw extruder, then pelletize underwater, dry, and mature to obtain polyurethane slices, wherein the prepolymer and composite chain extender The mass r...

Embodiment 3

[0052] A preparation method of a super-elastic naked ammonia fabric: the surface layer is made of nylon yarn, the inner layer is made of ultra-thin spandex yarn, and eight yarn feeders and eight-way yarn feed are used to weave. The eight yarn feeders of No. 2 wear ultra-thin spandex yarn. No. 8 yarn feeders are all made of nylon yarn;

[0053] The ultra-thin spandex yarn is prepared by the following method:

[0054] A, the raw material polytetrahydrofuran ether glycol PTMG and 4,4-diphenylmethane diisocyanate MDI are mixed, react at 90 ℃ for 140min, obtain the prepolymer of -NCO termination, wherein the molar ratio of MDI and PTMG is 4.55: 1. The relative molecular weight of the polytetrahydrofuran ether glycol PTMG is 2000;

[0055] B. Add the prepolymer, composite chain extender, and functional additives of step A into the screw extruder, then pelletize underwater, dry, and mature to obtain polyurethane slices, wherein the prepolymer and composite chain extender The mass r...

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

The invention relates to a textile fabric, in particular to a preparation method of an ultrathin naked ammonia fabric. A surface layer of the ultrathin naked ammonia fabric adopts nylon yarns, and an inner layer of the ultrathin naked ammonia fabric adopts ultrathin spandex filaments. According to the application, fabric combination is improved, and a combination using the ultrathin spandex filaments as base yarns and using the nylon yarns as surface yarns is utilized, so that the elasticity problem and the softness problem of the fabric are ingeniously solved, and two materials are tightly combined together to form one layer of fabric. The fabric is thin; the inner surface of the fabric is smooth, excellent in hand feeling and very comfortable when the fabric is worn on a body; the outer surface of the fabric has a certain hardness and texture and can well support the fabric; the ultrathin naked ammonia fabric can be formed into various clothes, and is particularly suitable for female bras.

Description

technical field [0001] The invention relates to textile fabrics, in particular to a method for preparing ultra-thin naked ammonia fabrics. Background technique [0002] In the prior art, spandex is the abbreviation of polyurethane fiber, which is a kind of elastic fiber. It is called "spandex" in mainland China. It has high elasticity and can be stretched 6 to 7 times, but it can be stretched rapidly with the disappearance of tension. Restored to its original state, its molecular structure is a chain-like, soft and extensible polyurethane, which enhances its properties by linking with hard segments. However, the strength of spandex is low, and it is generally not used alone, but is mixed into the fabric in a small amount to form a core-spun yarn with spandex as the core yarn, or a twisted yarn formed by merging and twisting with other fibers. Although it can be compatible with the performance of spandex and other fibers, it still has not brought into play the smooth and hig...

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 Patents(China)
IPC IPC(8): D04B1/00D04B1/16D04B1/18C08G18/48C08G18/10C08G18/32D01F6/88D01F1/10
CPCC08G18/10C08G18/4854D01F1/10D01F6/88D04B1/00D04B1/16D04B1/18D10B2331/02D10B2331/10D10B2501/02C08G18/3228
Inventor 张基鸿黄福开金华黄忠诚严赵伟翁宏果翁创杰
Owner HONGJI UNDERWEAR CO LTD
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