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A kind of preparation method of superelastic naked ammonia fabric

A technology of fabrics and naked ammonia, applied in the field of textile fabrics, can solve the problems that naked ammonia cannot be used, the smoothness of naked ammonia fabrics, high elasticity, and low strength of spandex can be solved, and it can achieve high mechanical strength, smooth appearance, and Table smooth effect

Active Publication Date: 2018-08-31
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 weaving method for super-elastic random-deformation seamless knitted underwear. Unable to use naked ammonia

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

[0027] A preparation method of super-elastic naked ammonia fabric: the surface layer is made of nylon yarn, the inner layer is made of high-resilience spandex yarn, and eight yarn feeders and eight-way yarn feeding are used to weave. The eight-way high-resilience spandex yarn of No. 2 yarn feeder , No. 5 yarn feeder and eight channels all wear nylon yarn;

[0028] The high resilience spandex yarn is prepared by the following method:

[0029] 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;

[0030] B. Dissolving the -NCO-terminated prepolymer of step A in the solvent N,N-dimethylacetamide to obtain a prepolymer solution, wherein the relative molecular weight of the polytetrahydrofuran ether glycol PTMG is 1750;

[0031]C. Dissolve 2-methylpentamethylenediamine, 3,5-diamino-4-chlorobenzoic acid i...

Embodiment 2

[0042] A preparation method of super-elastic naked ammonia fabric: the surface layer is made of nylon yarn, the inner layer is made of high-resilience spandex yarn, and eight yarn feeders and eight-way yarn feeding are used to weave. The eight-way high-resilience spandex yarn of No. 2 yarn feeder , No. 5 yarn feeder and eight channels all wear nylon yarn;

[0043] The high resilience spandex yarn is prepared by the following method:

[0044] 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;

[0045] B. Dissolving the -NCO-terminated prepolymer of step A in the solvent N,N-dimethylacetamide to obtain a prepolymer solution, wherein the relative molecular weight of the polytetrahydrofuran ether glycol PTMG is 1500;

[0046] C. Dissolve 2-methylpentamethylenediamine, 3,5-diamino-4-chlorobenzoic acid i...

Embodiment 3

[0057] A preparation method of super-elastic naked ammonia fabric: the surface layer is made of nylon yarn, the inner layer is made of high-resilience spandex yarn, and eight yarn feeders and eight-way yarn feeding are used to weave. The eight-way high-resilience spandex yarn of No. 2 yarn feeder , No. 5 yarn feeder and eight channels all wear nylon yarn;

[0058] The high resilience spandex yarn is prepared by the following method:

[0059] 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;

[0060] B. Dissolving the -NCO-terminated prepolymer of step A in the solvent N,N-dimethylacetamide to obtain a prepolymer solution, wherein the relative molecular weight of the polytetrahydrofuran ether glycol PTMG is 2000;

[0061] C. Dissolve 2-methylpentamethylenediamine, 3,5-diamino-4-chlorobenzoic acid i...

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 a super-elastic bared-spandex fabric. A surface layer adopts nylon yarn, and an inner layer adopts high-resilience spandex yarn. According to the preparation method, improvement is conducted from the fabric composition, the elasticity problem and the flexibility problem of the fabric are skillfully solved through the combination that the high-resilience spandex yarn is taken as bottom yarn, and the nylon yarn is taken as surface yarn, and the surface yarn and the bottom yarn are simultaneously fed and woven by adopting eight-way yarn feeding equipment, so that the two materials are closely combined together to form a layer of the fabric. According to the fabric, the inner surface is smooth, the handfeel is excellent, and the comfortable sensation is high when the fabric is worn on a body; the appearance has a certain hardness and texture, so that the fabric can be well supported to form multiple garments, and the fabric is especially suitable for female brassieres.

Description

technical field [0001] The invention relates to textile fabrics, in particular to a method for preparing superelastic 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 h...

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): D04C1/02D01F6/94C08G18/76C08G18/48C08G18/10
CPCC08G18/10C08G18/4854C08G18/7671D01F6/94D04C1/02D10B2331/02D10B2331/10D10B2401/061C08G18/3228C08G18/3814
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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