A kind of production method of shoe sole

Abstract

The invention relates to a production method for shoe soles. The main steps include: respectively preparing the rear hard material and the front soft material, wherein the rear hard material is composed of mixed isocyanate, mixed polyol and additional materials. Including amine catalyst, metal catalyst, ethylene glycol, talcum powder, foaming agent, color paste; adjust the reaction time of the hard part to 15 seconds, and the curing is within 3-5 minutes; the front tip of the mold body is raised 45 degrees relative to the ground °, first inject the hard material part for 10-12 seconds, then inject the soft material part, and demould after 6-7 minutes after mold closing. The beneficial effect of the present invention is that two kinds of soles with different hardness are made by one-time molding, which not only solves the cost problems of electricity, labor and time caused by the secondary molding of ordinary double density, but also solves the problems that cannot be solved in some structures. The process of double-density production saves more mold costs.

Description

technical field [0001] The invention relates to a shoe sole injection technology, in particular to a production method of a shoe sole. Background technique [0002] When producing polyurethane women's high-heeled outsoles by traditional methods, it is usually necessary to ensure the stiffness of the high-heel so as not to twist the foot when wearing it. Therefore, since the hardness of the entire sole is very hard, the hardness of the forefoot at this time will make it impossible to bend, making it extremely strenuous for people to walk, and the feet are prone to fatigue. In addition, in some advanced production processes, a soft inner pad or other similar material will be placed on the hard bottom platform or midsole of the forefoot, but it cannot change the current situation of bending the soles of the feet when walking, and it will still be very tiring; , and some processes are a combination of two products through heel hardening and forefoot softening, but the process i...

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Problems solved by technology

Therefore, since the hardness of the entire sole is very hard, the hardness of the forefoot will make it impossible to bend at this time, making it extremely difficult for people to walk, and the feet are easily fatigued.

In addition, in some advanced production processes, a soft inner pad or other similar material will be placed on the hard bottom platform or midsole of the forefoot, but it cannot change the current situation of bending the soles of the feet when walking, and it will still be very tiring; , and some processes are a combination of two products through heel hardening and forefoot softening, but the process is complicated and the cost is high

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