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High-simulation superfine fiber nylon-polyurethane base cloth and preparation method thereof

A technology of ultra-fine fiber and polyurethane, which is applied in the direction of non-woven fabrics, conjugated synthetic polymer artificial filaments, textiles and papermaking, etc. It can solve the problems of strong plastic feeling, difficulty in replacing cowhide applications, and gaps, and achieve a thick and sensual feel , fine creases, high soft feel effect

Inactive Publication Date: 2015-04-29
HUAFON MICROFIBER SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Some people use the method of using high-resilience wet-process polyurethane resin for superfine fiber synthetic leather to obtain high-resilience base cloth (patent number: 200710043426), but use the resin prepared by this method to produce microfiber base cloth. Cloth can only obtain high-resilience microfiber base fabrics. Although the patent mentions that the folds of the microfiber base fabrics obtained by this method are fine, the degree of fineness of the folds is only finer than that of ordinary microfiber base fabrics. There is a big gap with the first layer of cowhide, and it is difficult to replace the application of cowhide in the high-end field
At the same time, the high-resilience base fabric obtained by this method has a strong plastic feel, which is different from the thick and thick real leather.

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

[0036] (dyeing)

[0037] Nylon 6 (PA-6) and high pressure polyethylene (LDPE) were melt blended and spun at a weight ratio of 43:57, and the sea-island fiber fineness was controlled at 3.8 denier to obtain a PA / PE sea-island fiber with a length of 48 mm.

[0038] Then these sea-island fibers are subjected to non-woven needle punching process, and the needle punching density is controlled to 2300l / cm 2 , and the non-woven fabric was obtained. After ironing the obtained non-woven fabric, it is impregnated with polyether polyurethane, and then the microfiber base is obtained after reducing the amount of fiber opening, expanding the width and applying oil.

[0039] Then on the overflow dyeing equipment, the above-mentioned obtained superfiber base is added, and the bath ratio is 1:10, and the concentration is that the scouring agent aqueous solution of 0.5g / l is scouring;

[0040] After feeding into the cloth at room temperature, the temperature was raised at a rate of 1.5°C / min...

Embodiment 2

[0044] (non-dyeing)

[0045] Nylon 6 (PA-6) and high pressure polyethylene (LDPE) were melt blended and spun at a weight ratio of 40:60, and the sea-island fiber fineness was controlled at 4.2 denier to obtain PA / PE sea-island fibers with a length of 48 mm. Then these sea-island fibers are subjected to non-woven needle punching process, and the needle punching density is controlled to 2600l / cm 2 , and the non-woven fabric was obtained. After ironing the obtained non-woven fabric, it is impregnated with polyether polyurethane, and then the microfiber base is obtained after reducing the amount of fiber opening, expanding the width and applying oil.

[0046] Then on the overflow dyeing equipment, adding the above-mentioned obtained superfiber base blank is 1:10, and the concentration is that the scouring agent of 1.0g / l is scouring;

[0047] After feeding into the cloth at room temperature, the temperature was raised at a rate of 0.5°C / min, and the temperature was 100°C and 0.2...

Embodiment 3

[0051] (non-dyeing)

[0052] Nylon 6 (PA-6) and high pressure polyethylene (LDPE) were melt blended and spun in a weight ratio of 42:58, and the sea-island fiber fineness was controlled at 4.7 denier to obtain PA / PE sea-island fibers with a length of 48 mm. Then these sea-island fibers are subjected to non-woven needle punching process, and the needle punching density is controlled to 2800l / cm 2 , and the non-woven fabric was obtained. After ironing the obtained non-woven fabric, it is impregnated with polyether polyurethane, and then the microfiber base is obtained after reducing the amount of fiber opening, expanding the width and applying oil.

[0053] Then put the above-obtained microfiber base on the overflow dyeing equipment, add a scouring agent aqueous solution with a bath ratio of 1:10 and a concentration of 2g / l. ℃, 0.2MPa for 60 minutes of scouring, and then cooled to room temperature.

[0054] After scouring, add a leveling agent aqueous solution with a liquor r...

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Abstract

The invention discloses a piece of high-simulation superfine fiber nylon-polyurethane base cloth and a preparation method thereof. The high-simulation superfine fiber nylon-polyurethane base cloth is prepared from sea-island fiber formed by composite cospinning of nylon 6 and high pressure polyethylene, and a non-woven fabric prepared by a needling method, wherein the weight ratio of nylon 6 to high pressure polyethylene is (35-45): (65-55). The product obtained by the preparation method disclosed by the invention is thick in fleshy feeling, fine and smooth in fold lines and high soft in hand feeling, and is close to the texture of cowhide, so that the product can be widely applied to the field of substituting the cowhide.

Description

technical field [0001] The invention relates to a superfine fiber nylon polyurethane base cloth and a preparation method thereof. Background technique [0002] Microfiber nylon polyurethane base cloth (abbreviation: microfiber base cloth) is made of sea-island nylon fibers with a fineness of 4 to 7 denier. Made by oiling and other processes. In the process of polyurethane impregnation, the impregnation technology of polyurethane slurry with porous structure is adopted, and the sea-island fibers in the bottom blank are turned into microfibers after defibrillation and microfiber base cloth. At the same time, using the characteristics of nylon microfiber's large specific surface area and strong hydrophilicity, the microfiber synthetic leather has similar hygroscopic properties to dermis bundled collagen fibers. Moreover, the three-dimensional structure of microfiber synthetic leather is similar to that of real leather, and nylon microfiber is used as the skeleton, which makes...

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): D04H1/4382D04H1/46D01F8/06D01F8/12
Inventor 贺璇胡忠杰于晓成孙向浩韩芹
Owner HUAFON MICROFIBER SHANGHAI
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