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Preparation method of synthetic leather and synthetic leather

A technology for synthetic leather and semi-finished products, applied in the field of synthetic leather, can solve the problems of high density, poor softness, and obvious layering of synthetic leather, and achieve the effects of high peeling properties, good softness, and inconspicuous layering.

Pending Publication Date: 2022-06-03
ANTA CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing synthetic leather generally has problems such as high density and poor softness, and the layering is obvious

Method used

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  • Preparation method of synthetic leather and synthetic leather
  • Preparation method of synthetic leather and synthetic leather
  • Preparation method of synthetic leather and synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] 一种合成革的制备方法,包括以下步骤

[0027] (1) Mix the PA chips and the PE chips according to a set ratio, and obtain the nylon blended sea-island fiber through a spinning process; specifically, the PA chips are polyamide 6, and the melting point is 220-230 ° C; the PE chips are of low density Polyethylene, melting point is 108-126℃, polyamide 6 is used as island component, low density polyethylene is used as sea component, the weight ratio of polyamide 6 and low density polyethylene is (50-55):(45-50) After drying, the sea component and the island component are extruded, melted and metered by a screw extruder, and then spun by a spinning assembly. After cooling and forming, oiling, winding, and then bundling, drafting, crimping, shaping, and cutting 得到锦纶混纺海岛纤维;

[0028] (2) Get 400-460g / ㎡ ultra-fine fiber non-woven through the acupuncture process of nylon island fibers;

[0029] (3)将超细纤维无纺布通过5级烘箱进行梯度热定型得到基布,5级烘箱的温度设定依次为80-85℃,90-95℃,110-115℃,120-125℃ , 135-140℃, the thickness of the...

Embodiment 1

[0036] A preparation method of synthetic leather, comprising the following steps

[0037] (1) Mix the PA chips and the PE chips according to a set ratio, and obtain the nylon blended sea-island fiber through a spinning process; specifically, the PA chips are polyamide 6, and the melting point is 220-230 ° C; the PE chips are of low density Polyethylene, melting point 108-126℃, polyamide 6 as island component, low density polyethylene as sea component, weight ratio of polyamide 6 and low density polyethylene is 55:45, sea component and island component After drying, they are extruded, melted and metered by a screw extruder, and then spun by a spinning assembly, cooled and formed, oiled, wound, and then bundled, drawn, crimped, shaped, and cut to obtain nylon blended sea-island fibers;

[0038] (2) 460g / ㎡ superfine fiber non-woven fabric is obtained by needle punching nylon blended sea-island fiber;

[0039](3) The ultra -fine fiber non -woven fabric obtains the base cloth thro...

Embodiment 2

[0046] Example 2 is basically the same as the preparation method of Example 1. Different is that in steps (4), the Kibu uses polyurethane resin slurry in steps (4) After soaking the polyurethane resin pulp The resin slurry includes the following components: 100 copies of polyurethane, 650 copies of di metamimamamide, 1.5 non -ionic active agents and 1.5 parts of the color pulp.

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Abstract

The invention discloses synthetic leather and a preparation method thereof.The preparation method comprises the following steps that PA slices and PE slices are mixed according to a set proportion, and chinlon blended sea-island fibers are prepared through a spinning technology; the chinlon blended sea-island fibers are subjected to a needling process, and 400-460 g / m < 2 > superfine fiber non-woven fabric is obtained; the superfine fiber non-woven fabric is subjected to gradient heat setting through a five-stage drying oven, and base cloth is obtained; impregnating base cloth with polyurethane resin slurry, and then solidifying and washing to obtain an unsplit semi-finished product with the polyurethane content of 15-25wt%; splitting the unsplit semi-finished product by using a benzene decrement method to obtain a split semi-finished product; drying the split semi-finished product, oiling and shaping to obtain a synthetic leather semi-finished product; the synthetic leather semi-finished product is subjected to a dry veneering process to obtain the synthetic leather. The synthetic leather is low in density, good in softness and high in integrity.

Description

technical field [0001] The invention relates to the technical field of synthetic leather, in particular to a preparation method of synthetic leather and synthetic leather. Background technique [0002] Synthetic leather is mainly used in leather products for bags, luggage, belts, clothing, and gear, and is widely used in sports goods, household, household, shoes and apparel and other fields. The existing synthetic leather generally has problems such as high density and poor softness, and has obvious layering. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology, and to provide a preparation method of synthetic leather and synthetic leather. The synthetic leather has low density, good softness and strong integrity. [0004] In order to achieve the above object, the present invention adopts the following technical solutions [0005] Technical solution 1, a prepara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/14D06N3/0004D06N3/0011D06N3/0086D06N3/0077Y02P70/62
Inventor 苏加明杨帅奇丘冰方毛琳
Owner ANTA CHINA
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