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Anti-wrinkle crease-free non-woven fabric polyurethane synthetic leather used for shoes and preparation method thereof

A synthetic leather and polyurethane technology, applied in the field of synthetic leather, can solve the problems of poor shape of the back bending part, poor shape of finished shoes, general strength, etc., and achieve the effects of good flatness, good softness, and high physical and mechanical strength.

Active Publication Date: 2015-10-28
ANHUI ANLI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional polyurethane synthetic leather for shoes not only has large wrinkles and average strength, but also is easy to wrinkle when stretching the shoe last, and the shape of the finished shoe is poor; Processing and performance requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) The fiber web is laid on the surface of the spunlace non-woven fabric. The fiber web is composed of nylon and polyester with a mass ratio of 30:70; and it is processed by acupuncture to make a wrinkle-resistant non-woven fabric with a thickness of 0.9mm. base;

[0048] (2) Stir 200 parts of DMF and 0.5 parts of water repellent DS-3D0, then add 100 parts of polyester polyurethane resin SW-5025 and 6 parts of color paste RB-89W-B while stirring, and stir evenly to obtain polyurethane impregnated slurry;

[0049] Then place the anti-wrinkle non-woven fabric base in the polyurethane impregnation slurry for impregnation, then place it in a DMF aqueous solution with a mass concentration of 25% for coagulation, and then iron the surface of the anti-wrinkle non-woven fabric base with a temperature of 90°C. Hairiness, and adjust its moisture content;

[0050] (3) Stir and mix 60 parts of DMF, 0.6 parts of water repellant DS-3D, 2 parts of pore regulator HY-607, and 4 parts ...

Embodiment 2

[0059] (1) Lay the fiber web on the surface of the spunlace non-woven fabric, which is composed of nylon; and process it into a wrinkle-resistant non-woven fabric base with a thickness of 1.0 mm by acupuncture;

[0060] (2) Prepare 100 parts of DMF, 1.0 part of water repellent, and 80 parts of polyester polyurethane resin into polyurethane impregnating slurry;

[0061] Then place the anti-wrinkle non-woven fabric base in the polyurethane impregnation slurry for impregnation, then place it in a DMF aqueous solution with a mass concentration of 30% for coagulation, and then iron the surface of the anti-wrinkle non-woven fabric base with a temperature of 100 °C. Hairiness, and adjust its moisture content;

[0062] (3) 50 parts of DMF, 1 part of pore regulator, 450 parts of polyether modified polyurethane resin, CaCO 3 5-15 parts, 30 parts of wood powder, 10 parts of color paste to make polyurethane coating slurry;

[0063] Coating polyurethane coating slurry on the wrinkle-resi...

Embodiment 3

[0069] (1) Fiber laying is carried out on the surface of the spunlace non-woven fabric. The fiber laying is composed of polyester; and processed into a wrinkle-resistant non-woven fabric base with a thickness of 0.9 mm by acupuncture;

[0070] (2) Prepare 300 parts of DMF, 150 parts of polyester polyurethane resin, and 10 parts of color paste into polyurethane impregnating slurry;

[0071] Then place the anti-wrinkle non-woven fabric base in polyurethane impregnating slurry for impregnation, then place it in a DMF aqueous solution with a mass concentration of 28% for coagulation, and then iron the surface of the anti-wrinkle non-woven fabric base with a temperature of 95°C. Hairiness, and adjust its moisture content;

[0072] (3) Mix 100 parts of DMF, 0.8 parts of water repellent, 3 parts of pore regulator, 300 parts of polyether modified polyurethane resin, CaCO 3 5 parts, 15 parts of wood flour are made into polyurethane coating slurry;

[0073] Coating polyurethane coat...

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Abstract

The invention discloses anti-wrinkle crease-free non-woven fabric polyurethane synthetic leather used for shoes and a preparation method thereof. The preparation method comprises the steps that fiber screen laying and needling are carried out on a spunlaced non-woven fabric surface, and a anti-wrinkle non-woven base is formed; after dipping carried out in a polyurethane dipping sizing agent is finished, condensing and ironing are carried out in a DMF aqueous solution; after coating is carried out by a polyurethane coating, the condensing, washing and drying are sequentially carried out; a post-processing grinding machine is used for carrying out orientated grinding on the surface of a semi-finished product; one layer of a thermoplastic polyurethane resin dry coating sizing agent is coated on release paper, after drying is conducted, one layer of a thermoplastic polyurethane dry bonding layer sizing agent is coated on the release paper, then drying is carried out in a drying oven until the release paper is half-dried, and a dry synthetic leather semi-finished product is obtained; the dry synthetic leather semi-finished product is attached to the wet synthetic leather semi-finished product, and after drying and ripening are conducted, the non-woven fabric polyurethane synthetic leather is obtained. The non-woven fabric polyurethane synthetic leather has the advantages that wrinkles cannot be generated, the physical mechanical strength is high, meanwhile sizing of shoemaking is good, and the durability is good; processing and performance requirements for children shoes, sport leisure shoes and the like are completely met.

Description

technical field [0001] The invention relates to the technical field of synthetic leather, in particular to a non-woven polyurethane synthetic leather for anti-wrinkle and non-crease shoes and a preparation method thereof. Background technique [0002] Nowadays, polyurethane synthetic leather products have been widely used in people's daily life, especially in the field of sports shoes. With the development of social economy and the improvement of people's living standards, people's demand for sports shoe leather is not limited to Durability, and an increasing focus on its added functionality. [0003] The traditional polyurethane synthetic leather for shoes not only has large wrinkles and average strength, but also is easy to wrinkle when stretching the shoe last, and the shape of the finished shoe is poor; And other processing and performance requirements. Contents of the invention [0004] The present invention aims to provide a polyurethane synthetic leather with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14B32B27/04B32B38/18B32B37/02B32B37/26
Inventor 杜东旭赵伟栋陈绪珍邢高瞻
Owner ANHUI ANLI MATERIAL TECH
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