Preparation method of EVA (ethylene-vinyl acetate) foaming shoe material containing softwood

Abstract

The invention discloses a preparation method of an EVA (ethylene-vinyl acetate) foaming shoe material containing softwood. According to the method, the compatibility between the softwood and EVA can be improved, the finished product rate of the EVA foaming shoe material containing the softwood is increased, the method is suitable for large-scale production, and the prepared EVA foaming shoe material containing the softwood can have natural softwood appearance. According to the preparation method of the EVA foaming shoe material containing the softwood, natural softwood is firstly mixed with natural rubber and then mixed with EVA, so that the natural softwood can be firstly wrapped with a layer of cohesive natural rubber, the natural rubber and EVA have excellent crosslinking compatibility, natural rubber is used as an intermediate cohering medium, the compatibility between the natural softwood and the EVA is improved, and the stripping phenomenon between the natural softwood and EVA can be effectively prevented.

Description

Technical field [0001] The invention relates to a preparation method of EVA foamed shoe material containing cork. Background technique [0002] Because EVA has the advantages of good elasticity, lightness, easy coloring, etc., EVA foamed shoe materials are widely used in the production of shoe soles. However, the general EVA foamed shoe materials have poor air permeability and moisture absorption, and EVA foamed shoes are used. When the soles are made of materials, the sweat secreted by the foot sweat glands cannot evaporate in time, forming a humid environment in the shoes, which can easily breed a large number of bacteria, causing foot discomfort, even athlete's foot, affecting human health, and low practicability. In the prior art, EVA raw materials are modified by adding auxiliary fillers to improve the breathability and moisture absorption of EVA foamed shoe materials. The Chinese patent with the patent number 201210537054.2 discloses an EVA foam board and a preparation met...

AI Technical Summary

Problems solved by technology

The Chinese patent No. 201210537054.2 discloses an EVA foam board and its preparation method. It mixes cork shavings with EVA, and molds and foams it to make it environmentally friendly, light, breathable, hygroscopic, antibacterial, deodorant, Compared with commonly used inorganic fillers, cork chips have the advantages of low density, rich resources, degradable, and less wear and tear on processing equipment, and the obtained foamed materials can have good Woody feeling; however, due to the poor compatibility between cork chips and EVA materials, peeling will occur between cork and EVA when the molded body is foamed, the cork content is greatly reduced, and the peeling of cork will cause peeling on the EVA molded body Traces, holes are formed on the EVA molded body, the yield is low, and it is not suitable for mass production. In order to reduce the peeling of cork, the prior art usually invests a large amount of EVA material in the preparation process, and covers it with EVA material as completely as possible. Cork, which makes the cork into the interior of the EVA material, but the high content of EVA will make the molding no longer have the appearance of natural cork