EVA sole processing

by:BEF     2020-06-27

in recent years, with the rapid development of shoe industry, sole materials species become diversification. Traditional shoemaking of subject status of PVC and rubber solid sole has been gradually replaced by the new rubber and foam soles. Ethylene vinyl acetate copolymer ( EVA) Foamed sole materials because of its light weight, wear comfortable widely loved by the people. EVA sole has good plasticity, good elasticity, so the EVA sole is very popular in the application of sports shoes in the bottom. Based on EVA sole foamed sole materials requirement of development of industry, developed in line with market demand of lightweight EVA shoe material.

EVA soles can 'foam' in several different ways, in which each bubble into raw material. When the plastic is liquid foaming agent can be introduced as a solid. When the combination is heated, foaming agent will swell and turn it into a gas, left in the whole plastic bubble. This can be done in large hot press, in order to produce the material, although these is usually performed using injection molding machine, injection molding machine in the quick release before using hydraulic pressure head to compress and heat the EVA sole, allowing the bubble inflated. Another method using the mixture of EVA foaming agent particles and particles. Combination of ingredients will be compressed in the mould, will be under pressure in their slow cooling.

EVA soles made by compression molding technology. The expansion of the EVA sole, foaming material will be loaded into the mold, and then put it in the hot press. Bubble of the bubble will more inflation, which will lead to a lighter, more flexible in the bottom. It is a bit like a second cooked bubble. Nike use Phylon as the basis of all of its Lunarlon technology, and pioneered the use of this technology in the production of dual density soles.

it does not seem to be the most attractive materials, EVA sole foam to make it become the foundation of modern sports shoes. Next time you put on a pair of comfortable shoes for our old partner EVA soles and a wide range of bubble family leave a memory.

tag: EVA sole
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