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Breathable PU synthetic leather and preparation method thereof

A technology of synthetic leather and synthetic leather base material, applied in the field of synthetic leather, can solve the problems of high production cost, environmental pollution, etc., and achieve the effects of strong alkali resistance, reduced procedures, and excellent performance

Inactive Publication Date: 2019-05-07
YANGZHOU DERWINS PLASTICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation cost of 4A zeolite is relatively high, and the preparation will also cause certain pollution to the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A preparation method of breathable PU synthetic leather, comprising the steps of:

[0040] The first step, pre-treatment, the base cloth is unrolled and soaked in water, and then the water is squeezed out through the squeeze roller, and then the base cloth is passed through the ironing wheel, and ironed at a temperature of 120°C to 160°C;

[0041] In the second step, the ironed base cloth is coated with wet-process PU resin slurry, and the thickness of the coated wet-process PU resin slurry is 0.1-0.5mm, and then the base cloth coated with wet-process PU resin slurry is placed into In the coagulation tank, a mixture of water and DMF is installed in the coagulation tank, and the base cloth coated with wet-process PU resin slurry is washed with water, and then dried and shaped in an oven to form a semi-finished bass. The temperature of the oven is set at 180 ℃~195℃, the drying time is set to 40min, the oven temperature is adjusted every 10min, and the oven temperature is ...

Embodiment 2

[0048] A preparation method of breathable PU synthetic leather, comprising the steps of:

[0049] The first step, pre-treatment, the base cloth is unrolled and soaked in water, and then the water is squeezed out through the squeeze roller, and then the base cloth is passed through the ironing wheel, and ironed at a temperature of 120°C to 160°C;

[0050] In the second step, the ironed base cloth is coated with wet-process PU resin slurry, and the thickness of the coated wet-process PU resin slurry is 0.1-0.5mm, and then the base cloth coated with wet-process PU resin slurry is placed into In the coagulation tank, a mixture of water and DMF is installed in the coagulation tank, and the base cloth coated with wet-process PU resin slurry is washed with water, and then dried and shaped in an oven to form a semi-finished bass. The temperature of the oven is set at 180 ℃~195℃, the drying time is set to 40min, the oven temperature is adjusted every 10min, and the oven temperature is ...

Embodiment 3

[0057] A preparation method of breathable PU synthetic leather, comprising the steps of:

[0058] The first step, pre-treatment, the base cloth is unrolled and soaked in water, and then the water is squeezed out through the squeeze roller, and then the base cloth is passed through the ironing wheel, and ironed at a temperature of 120°C to 160°C;

[0059] In the second step, the ironed base cloth is coated with wet-process PU resin slurry, and the thickness of the coated wet-process PU resin slurry is 0.1-0.5mm, and then the base cloth coated with wet-process PU resin slurry is placed into In the coagulation tank, a mixture of water and DMF is installed in the coagulation tank, and the base cloth coated with wet-process PU resin slurry is washed with water, and then dried and shaped in an oven to form a semi-finished bass. The temperature of the oven is set at 180 ℃~195℃, the drying time is set to 40min, the oven temperature is adjusted every 10min, and the oven temperature is ...

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Abstract

The present invention discloses a breathable PU synthetic leather and a preparation method thereof. The breathable PU synthetic leather comprises a base cloth. An upper layer of the base cloth is coated with a wet-process PU resin layer, and a PU surface layer is arranged on an upper layer of the wet PU resin layer. The preparation method of the breathable PU synthetic leather comprises: step 1, pre-treatment, namely soaking the base cloth in water, and then ironing the base cloth sequentially through an extruding roller and an ironing mill; step 2, and coating the base cloth from the first step with a wet-process PU resin slurry, next putting the base cloth coated with the wet-process PU resin slurry into a solidification tank and washing the base cloth coated with the wet-process PU resin slurry with water, and then drying and shaping the base cloth to form a semi-finished product bayesian; step 3, carrying out a dry-process veneering treatment on the semi-finished product bayesian to obtain a PU synthetic leather substrate; step 4, knurling and setting the PU synthetic leather substrate to obtain a PU synthetic leather; and step 5, deodorizing the synthetic leather. The breathable PU synthetic leather is characterized in that the base cloth is coated with the wet-process PU resin layer which has large pores therein, so that the air permeability of the PU synthetic leather isimproved.

Description

technical field [0001] The invention relates to the technical field of synthetic leather, in particular to a breathable PU synthetic leather. Background technique [0002] Artificial leather is a plastic product that looks and feels like leather and can be used instead of it. PU synthetic leather is a kind of artificial leather. In order to adapt PU synthetic leather to different application conditions, the synthetic leather needs to have good air permeability. In the prior art, the invention patent with the application number CN201110398908.9 discloses a wet-process slurry for breathable polyurethane synthetic leather and its preparation method. The invention adds 4A zeolite to the wet-process slurry of PU synthetic leather , so that PU synthetic leather has good air permeability. However, the preparation cost of 4A zeolite is relatively high, and the preparation will also cause certain pollution to the environment. Contents of the invention [0003] The purpose of th...

Claims

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Application Information

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IPC IPC(8): B32B3/24B32B3/30B32B7/06B32B27/12B32B27/20B32B27/40B32B37/06B32B37/10B32B38/00C08L75/08D06B21/00D06N3/00D06N3/14
Inventor 刘顺兆刘传庆陈意徐蓉王忠吴丽萍
Owner YANGZHOU DERWINS PLASTICS TECH
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