Synthetic leather producing method for four-way stretch elastic

Abstract

A technology for preparing the synthetic leather with elasticity in four directions includes such steps as providing a knitted fabric able to be stretched in four directions, positioning it on the conveying chain unit in non tension mode, directional conveying, coating the liquid-state polyamino foamate resin to form a coated layer, conveying it in a coagulating pool to form a foamed body, water flushing and drying. Its advantage is high elasticity.

Description

【Technical field】 [0001] The invention relates to a synthetic leather, in particular to a method for manufacturing a synthetic leather with four-way stretch elasticity. 【Background technique】 [0002] The general method of wet elastic synthetic leather is to coat a layer of polyurethane resin on a non-stretchable base fabric. After wet foaming, the base fabric is separated from the polyurethane foam layer. In addition, an elastic base cloth is prepared in advance for bonding with the polyurethane foam layer. This kind of manufacturing process not only cannot work consistently, but also it is difficult to control the tension of the elastic base fabric and the polyurethane foam layer when laminating, which may easily cause the tension of the elastic base fabric to be uneven, so that the product quality cannot be improved. [0003] Another existing method for making elastic synthetic leather is to bond an elastic base fabric mixed with elastic fibers with a non-stretchable bas...

AI Technical Summary

Problems solved by technology

The processing procedure of this kind of process is relatively cumbersome, and the elastic base fabric must be bonded to the base fabric before separation, which is a waste of time and cost

[0004] It is true that synthetic leather has been widely used in daily necessities, such as clothing, shoes, leather bags, furniture, automobiles, etc., but traditional synthetic leather is usually not light, thin and four-dimensional due to the limitation of its manufacturing process. flexible requirements

Therefore, when synthetic leather is applied to clothing and shoes, the elbows, knees, and even ankles cannot be stretched arbitrarily to meet the needs of human activities, so it often makes the wearer feel uncomfortable, which leads to the value of synthetic leather. The feeling cannot be improved, which greatly reduces the economic benefits of synthetic leather. Generally, elastic synthetic leather can only be stretched in the transverse direction, or the manufacturing process is cumbersome and the cost is high.

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