Insole of rubber foamed shoe and preparation method thereof

Abstract

The invention discloses an insole of a rubber foamed shoe and a preparation method thereof. The insole comprises the following raw materials in parts by weight: 70-80 parts of natural rubber, 0-30 parts of cis-polybutadiene, 0.8-2.5 parts of rubber accelerator DM, 0.5-0.9 part of rubber accelerator M, 0.5-1 part of rubber accelerator D, 8-80 parts of zinc oxide, 3-8 parts of stearic acid, 0.9-1 part of wearproof particles, 2-2.5 parts of antifogging agent MB, 4-5 parts of foaming agent AC, 1-2 parts of sulfur, 2-2.5 parts of paraffin, 5-10 parts of titanium dioxide, 2-2.5 parts of anti-aging agent SPC and 10-15 parts of white factice. The preparation method comprises the following steps: putting the raw materials in the formula in a rubber mixing mill to be mixed for 30-35 minutes, thus obtaining a rubber foamed sheet; putting the prepared rubber foamed sheet in a bottom die, fixing a shoe last in a corresponding position on an upper die, sleeving the shoe last with an upper and carrying out foaming molding at a certain temperature for a certain time; removing the shoe last and the die, thus preparing the integrally formed rubber foamed shoe. The insole and the preparation method have the beneficial effects that the formula is environment-friendly; the process is simple; the shoe sole has good resilience; glue is not needed during one-time forming; the insole is free from debonding at high temperature and free from slipping at low temperature, is not broken, has light whole weight and is comfortable to wear.

Description

technical field [0001] The invention relates to a shoe, in particular to a midsole of a rubber foam shoe and a preparation method thereof. Background technique [0002] The shoes on the existing market are roughly composed of three parts: the outsole, the midsole and the upper of a shoe. The manufacturing process is generally to make the outsole, the midsole and the upper of a shoe respectively first, and then glue the outsole, the midsole and the upper of a shoe together. Glued together to form a complete shoe, the midsole and upper can also be joined by sewing. The traditional shoe-making process is cumbersome and requires the use of glue adhesives. Glue adhesives are generally toxic to a certain extent. They produce harmful gases through volatilization, which pose a threat to human health, and are easy to pollute the environment and are not environmentally friendly. In addition, shoes made by traditional techniques are prone to degumming of the upper and sole after being...

AI Technical Summary

Problems solved by technology

The traditional shoe-making process is cumbersome and requires the use of glue adhesives. Glue adhesives are generally toxic to a certain extent. They produce harmful gases through volatilization, which pose a threat to human health, and are easy to pollute the environment and are not environmentally friendly.

In addition, shoes made of traditional crafts are prone to degumming of the upper and sole after being worn by consumers for a period of time, and are even prone to breakage in low temperature weather.

Consumers generally report that traditional shoe-making products are heavy in weight, poor in rebound effect, and not comfortable enough to wear. There is a realistic demand for new and improved formulas for shoes.

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