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High performance WPU superfine fiber synthetic leather and clean production method thereof

A superfine fiber and clean production technology, which is applied in fiber processing, textiles and papermaking, etc., can solve the problems of poor product surface feel and imitation, insufficient product softness, poor hand feel, etc., and achieve good mechanical properties and usability. The effect of good pattern simulation and soft hand feeling

Active Publication Date: 2017-07-11
JIANGSU KEMEI NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, compared with natural leather, suede microfiber synthetic leather products still have the following disadvantages: (1) The surface making process usually uses solvent-based polyurethane release paper transfer coating method, which will use a large amount of solvents and cause environmental pollution (2) The softness of the product is insufficient, and the fullness of the handle is poor; (3) The water and gas permeability of the product is small, resulting in poor hygienic performance; (4) The feel and simulation of the product surface are poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Shrinkage of the base cloth: make the superfine fiber synthetic leather base cloth pass through an impregnation tank equipped with a 30°C shrinkage liquid, and control the impregnation amount of the shrinkage liquid by rolls to be 80% of the quality of the superfine fiber synthetic leather base cloth , and then enter the continuous kneading machine, under the condition of 55 ℃, make the superfine fiber synthetic leather base cloth dry thoroughly, complete the shrinking kneading process, and obtain the shrinking kneading base cloth;

[0030] Wherein, the ultrafine fiber synthetic leather base cloth is island-fixed ultrafine fiber synthetic leather base cloth, non-fixed island type ultrafine fiber synthetic leather base cloth or orange segment type ultrafine fiber synthetic leather base cloth.

[0031]The shrinkage solution is prepared by the following method: in parts by mass, 5 parts of bayberry extract, 1 part of rubber extract, 0.1 part of sodium citrate, 2 parts o...

Embodiment 2

[0035] (1) Shrinkage of the base cloth: make the superfine fiber synthetic leather base cloth pass through an impregnation tank equipped with a 35°C shrinkage liquid, and control the impregnation amount of the shrinkage liquid by a roller to be 90% of the quality of the superfine fiber synthetic leather base cloth , and then enter the continuous kneading machine, under the condition of 60 ℃, the superfine fiber synthetic leather base cloth is completely dried, and the shrinking kneading process is completed, and the shrinking kneading base cloth is obtained;

[0036] Wherein, the ultrafine fiber synthetic leather base cloth is island-fixed ultrafine fiber synthetic leather base cloth, non-fixed island type ultrafine fiber synthetic leather base cloth or orange segment type ultrafine fiber synthetic leather base cloth.

[0037] The shrinkage solution is prepared by the following method: in parts by mass, 10 parts of bayberry extract, 2 parts of rubber extract, 0.2 part of sodium...

Embodiment 3

[0041] (1) Shrinkage of the base cloth: make the superfine fiber synthetic leather base cloth pass through the dipping tank equipped with 32°C shrinkage liquid, and control the impregnation amount of the shrinkage liquid by rollers to be 85% of the quality of the superfine fiber synthetic leather base cloth , and then enter the continuous kneading machine, under the condition of 65 ℃, the superfine fiber synthetic leather base cloth is completely dried, and the shrinking kneading process is completed to obtain the shrinking kneading base cloth;

[0042] Wherein, the ultrafine fiber synthetic leather base cloth is island-fixed ultrafine fiber synthetic leather base cloth, non-fixed island type ultrafine fiber synthetic leather base cloth or orange segment type ultrafine fiber synthetic leather base cloth.

[0043] The shrinkage solution is prepared by the following method: in parts by mass, 7 parts of bayberry extract, 1.5 parts of rubber extract, 0.3 part of sodium citrate, 3 p...

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Abstract

Provided are a high performance WPU superfine fiber synthetic leather and a clean production method thereof; superfine fiber synthetic leather base cloth is impregnated through an impregnating tank filled with a shrinkage and rubbing liquid and then enters a continuous graining machine, and the superfine fiber synthetic leather base cloth is dried to obtain shrinkage-rubbed base cloth; a synthetic leather dry-process production line provided with a PUR scraping device is adopted, a WPU coating is scraped on release paper and is dried, a WPU film is formed on the release paper, then the WPU film is coated with PUR, then the coated WPU film is fitted with the shrinkage-rubbed base cloth, and the obtained productt is cooled and coiled and is placed and cured; after the release paper is stripped, the high performance WPU superfine fiber synthetic leather is obtained. With adoption of the shrinkage rubbing technology, the softness, air permeability and water vapor permeability of the superfine fiber synthetic leather base cloth are greatly improved; then through the composite technology of coating layer transferring with release paper and PUR scrapping, the WPU coating layer is composited on the superfine fiber synthetic leather substrate, and the WPU superfine fiber synthetic leather with soft hand feeling and good mechanical properties and use performance is obtained.

Description

technical field [0001] The invention relates to the technical field of superfine fiber synthetic leather, in particular to a high-performance WPU superfine fiber synthetic leather and a clean production method thereof. Background technique [0002] Due to the limited resources of raw leather used to produce natural leather, and the production of natural leather is a process of high energy consumption and high pollution, it will bring a huge pollution load to the environment. In recent years, developed countries such as the European Union have also proposed new standards for the safety of natural leather itself, strictly restricting the presence of toxic chemicals such as Cr(VI), azo dyes, pentachlorophenol (PCP) and free formaldehyde in natural leather. . From the perspective of raw leather resources, environmental protection, product safety and market, the production and use of natural leather are facing great challenges. [0003] For the above reasons, countries all over...

Claims

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Application Information

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IPC IPC(8): D06N3/00D06N3/12D06N3/14D06M13/00D06M13/207D06M13/262
CPCD06M13/00D06M13/207D06M13/262D06N3/0004D06N3/0097D06N3/123D06N3/143D06N2209/123D06N2209/126D06N2209/1642D06N2211/28
Inventor 陆毅马兴元严荣华
Owner JIANGSU KEMEI NEW MATERIALS
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