Method for preparing indoor two-color casual shoes

Abstract

The invention relates to the technical field of shoe making, and provides a method for preparing indoor two-color casual shoes. The obtained indoor two-color casual shoes are subjected to SEBS modification, thus, the material crystallization rate is decreased, the compressive deformation property of a material is improved, rubber is good in hand feeling, and comfort is high; the shoes are subjected to OBC modification, the material dimensional stability is improved; an environment-friendly cross-linking agent 17-40B, volatile organic compounds such as acetophenone are not used, and the shoes has the environmental protection characteristic; and a mold device adopted by the method for preparing the indoor two-color casual shoes is rapid in heating, quickly, the duplication precision of solelines is effectively improved, demolding is quick, the injection molding yield and production efficiency are effectively improved, and the method is suitable for mass production and use.

Description

technical field [0001] The invention relates to the technical field of shoemaking technology, in particular to a method for preparing indoor two-color casual shoes. Background technique [0002] With the improvement of living standards, people are increasingly pursuing comfortable material enjoyment. And footwear is more and more subject to people's attention as requisite article in people's life. Shoes with comfort, light weight, wear resistance, high elasticity and low permanent compression are more and more sought after by people. The sole material starts from natural rubber, then PVC synthetic leather and synthetic rubber, and then EVA, PU, ​​SBS, TPU and their corresponding foaming materials. However, these materials often cannot meet people's requirements for shoes. Careful analysis of these materials will reveal that natural rubber has poor low temperature resistance, heavy taste, and uncomfortable texture; PVC synthetic leather hardens at low temperature, has poor...

AI Technical Summary

Problems solved by technology

[0003] Moreover, the one-time injection molding commonly used in the existing shoemaking process is to put the mold on the heating machine for preheating, and after reaching the appropriate temperature, put the sole material into the mold and heat it for molding. In the shoemaking process, the mold is heated. The heat conduction is slow, the heating speed of the mold is slow, which greatly reduces the production efficiency of shoemaking; and in the existing shoemaking process, the upper and lower molds are simultaneously vacuumed to increase the vacuuming efficiency, but the simultaneous vacuuming of the upper and lower molds makes the inside of the mold The vacuum flow direction is uneven, the vacuum effect is reduced, and the pressure is unstable, and the resulting shoe sole texture is not clear enough, which affects the production quality

[0004] In addition, in the one-time molding process, since the mold cavity needs to maintain high pressure during the molding process, the upper and lower molds are tightly pressed under high pressure, so it is not easy to demould. Therefore, the mold is usually equipped with a mold jumper structure. The mold jumper is set on the shoe last. When the upper and lower molds are closed, the mold jumper can be stuck into the lower mold. After vulcanization is completed, when the upper and lower molds are separated and the mold is separated, the clamping effect of the lower mold on the mold jumper makes the shoe last The lower mold is pulled to separate the shoe last and the upper mold at the same time, so as to complete the demoulding of the shoe last at the same time. However, after long-term use, the mold jumper is easy to loosen, and the jamming effect between the lower mold and the mold jumper is weakened. The demoulding failure occurs, causing the shoe last to be stuck in the upper mold and the finished product to be reimbursed. The mold jumper needs to be replaced frequently, and the cost of accessories is high, which increases the production burden.

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