Shoe material processing method

Abstract

The invention discloses a shoe material processing method which comprises the following steps of: first laying a TPU thin film in the cavity of a lower mould of the shoe material; injecting a liquid PU material into the mould; then leading the shoe material to be formed in the mould; and finally taking out the shoe material and repairing a PU film on the periphery of the shoe material. Compared with the prior art, the method adopts the TPU thin film to substitute a release agent and improves the liquidity of the liquid PU material and the fineness of material in the forming process of the shoe material; the liquid PU material and the TPU thin film are combined into a whole in the cavity of the mould, which can avoid the occurrence of defects including bubbles, nicks, pits and the like, thus reducing the cost of materials and labor cost for repairing the shoe material and enhancing the brightness and smoothness and aesthetic feeling of the formed shoe material; in addition, the TPU thin film is easier to be separated from the mould, thus being capable of realizing the demoulding of the shoe material without spraying the release agent in the mould; besides, the TPU thin film 1 can further enhance the anti-hydrolysis performance of the shoe material.

Description

technical field [0001] The invention relates to the technical field of shoemaking, and more specifically relates to a processing method for shoe materials, especially shoe outsoles and midsoles. Background technique [0002] The processing of traditional shoe materials, especially the processing method of outsole and midsole shoe materials includes the following steps: [0003] (1) spray release agent in the die cavity of mould; [0004] (2) Inject PU (Polyurethane, ie polyurethane, referred to as polyurethane) material into the mold, so that the shoe material is molded in the mold; [0005] (3) Finally, the formed shoe material is taken out and trimmed, such as filling air bubbles and gaps, polishing the pitting on the surface of the shoe material, and it must be painted for many times to make outsoles and midsoles with different shapes and patterns. Sole and other shoe materials. [0006] Please refer to figure 1 , the main problem of the above-mentioned shoe material ...

AI Technical Summary

Problems solved by technology

[0006] Please refer to figure 1 , the main problem of the above-mentioned shoe material processing method is: bubbles 1', gaps 2', pitting 3' and unevenness affect the appearance and use of defects that are easy to form on the PU sole, and a large amount of manpower must be invested for multiple times of smooth surface. Repair by painting

Some defects are even so serious that they cannot be repaired and must be scrapped

This results in a waste of material and labor costs

In addition, in the prior art, in order to avoid waterproofing and hydrolysis, a large amount of polyether materials must be used as midsole materials. This material is not easy to hydrolyze, and it is easy to pollute the environment after being discarded.

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