Preparation process of waterborne polyurethane sports shoe leather base

A water-based polyurethane and preparation technology, applied in footwear, applications, clothing, etc., can solve problems such as complex process procedures, extended production equipment, and low production efficiency, and achieve overall process simplification, improved peel strength, and no loss of thickness Effect

Pending Publication Date: 2021-06-25
KEYI FUJIAN MICROFIBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above-mentioned process, pre-baking and back-coating are required after the foaming material is coated. This process is complicated and consumes a lot of energy, and it takes about 8-10 minutes during the flocculation process of the foaming material, which takes a long time, resulting in high production efficiency. Low or extended production equipment, high investment costs

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0029] A kind of preparation technology of waterborne polyurethane sports shoe leather bass, comprises the following steps:

[0030] Step 1, impregnation: pass the non-woven fabric through the impregnation liquid in the impregnation tank, soak it for many times, and squeeze it with rollers to keep the liquid-carrying rate of the non-woven fabric at 70-80%;

[0031] Step 2, pre-coagulation: pre-coagulate the non-woven fabric treated in step 1 with a pre-coagulation solution, dry it, and iron it flat, wherein the pre-coagulation time is 1-3 minutes;

[0032] Step 3, coating: apply water-based polyurethane foam slurry on the surface of the non-woven fabric treated in step 2, wherein the coating amount of the water-based polyurethane foam slurry is 500-700g / m 2 ;

[0033] Step 4, coagulation: coagulate the non-woven fabric prepared in step 3 through the coagulation liquid in the coagulation tank, wherein the coagulation time is 4-6min:

[0034] Step 5, rolling liquid: roll the s...

Embodiment 1

[0043] A kind of preparation technology of waterborne polyurethane sports shoe leather bass, comprises the following steps:

[0044]Step 1, impregnation: pass the non-woven fabric through the impregnation liquid in the impregnation tank, soak it for many times, and squeeze it with rollers to keep the liquid-carrying rate of the non-woven fabric at 70%;

[0045] Step 2, pre-coagulation: pre-coagulate the non-woven fabric treated in step 1 with a pre-coagulation solution, tie it dry, and iron it flat, wherein the pre-coagulation time is 1 min;

[0046] Step 3, coating: apply water-based polyurethane foam slurry on the surface of the non-woven fabric obtained through the treatment in step 2, wherein the coating amount of the water-based polyurethane foam slurry is 500g / m 2 ;

[0047] Step 4, coagulation: coagulate the non-woven fabric prepared in step 3 through the coagulation liquid in the coagulation tank, wherein the coagulation time is 6 minutes:

[0048] Step 5, rolling li...

Embodiment 2

[0057] A kind of preparation technology of waterborne polyurethane sports shoe leather bass, comprises the following steps:

[0058] Step 1, impregnation: pass the non-woven fabric through the impregnation liquid in the impregnation tank, soak it for many times, and squeeze it with rollers to keep the liquid-carrying rate of the non-woven fabric at 80%;

[0059] Step 2, pre-coagulation: pre-coagulate the non-woven fabric treated in step 1 with a pre-coagulation solution, dry it, and iron it flat, wherein the pre-coagulation time is 3 minutes;

[0060] Step 3, coating: apply water-based polyurethane foaming slurry on the surface of the non-woven fabric obtained through step 2, wherein the coating amount of the water-based polyurethane foaming slurry is 700g / m 2 ;

[0061] Step 4, coagulation: coagulate the non-woven fabric prepared in step 3 through the coagulation liquid in the coagulation tank, wherein the coagulation time is 4 minutes:

[0062] Step 5, rolling liquid: roll...

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Abstract

The invention relates to a preparation process of a waterborne polyurethane sports shoe leather base. The preparation process which includes the following steps: 1, impregnation: impregnating non-woven fabric with impregnation liquid in an impregnation tank for multiple times, extruding by a roller, and keeping a liquid carrying rate of the non-woven fabric at 70-80%; 2, pre-solidifying: pre-solidifying the non-woven fabric treated in the step 1 through a pre-solidifying liquid, drying through mangling and ironing; 3, coating: coating the surface of the non-woven fabric obtained through treatment in the step 2 with waterborne polyurethane foaming slurry in a scraping mode; 4, solidification; 5, mangling; 6, washing: washing the mangled non-woven fabric with water, and removing redundant solidification liquid; and 7, drying. According to the present invention, the existing shoe leather base preparation process is improved, and before the coating of the waterborne polyurethane foaming slurry, the high-molecular compound solution is firstly impregnated, and then the pre-solidification is performed, so that the water-soluble polymer occupies the internal space of the non-woven fabric, fibers of the non-woven fabric are protected, the non-woven fabric is supported, and meanwhile, the excellent stiffness of the leather base of the sports shoes is kept.

Description

technical field [0001] The invention belongs to the field of shoe leather base preparation, and in particular relates to a preparation process of water-based polyurethane sports shoe leather base. Background technique [0002] Most of the current sports shoe leather bases use solvent-based polyurethane as a raw material, and the sports shoe leather bases are prepared by quickly dissolving and replacing organic solvents (mainly DMF) in the water phase to form a film. This bass has excellent stiffness, peel strength and flex resistance, thus meeting the requirements of sports shoe leather. However, because the raw materials contain organic solvents, both the production process and the finished products contain certain organic solvents, which is not only harmful to the health of production employees and end consumers, but also has many negative impacts on the environment. With the deepening of awareness of sustainable development and social responsibility, sports brands and co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00D06M15/564D06M15/53
CPCD06N3/14D06N3/0043D06N3/0088D06N3/0009D06N3/0063D06M15/564D06M15/53D06N2211/106
Inventor 杨顺新
Owner KEYI FUJIAN MICROFIBER CO LTD
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