A kind of PU elastic environmental protection sole and its production method and production mold

Abstract

The invention discloses a PU elastic environment-friendly shoe sole and a production method and a manufacturing mold thereof, and belongs to the field of shoe manufacturing. The PU elastic environment-friendly shoe sole comprises an outsole and an insole, the outsole is in a slice shape, the outsole sinks inwards and downwards to form a plurality of sinking portions, the insole is a PU foaming layer, at least one buffer part is arranged in the insole, and ventilation holes are further formed in the insole. The insole is completely attached to the outsole. The PU elastic environment-friendly shoe sole has the advantages of being light, environmentally friendly, elastic, not prone to breakage and wrinkling, rich in color, not prone to deformation and the like. The amount of rubber is reduced, the shoe sole is more environmentally friendly, the phenomena of wrinkling, expansion and breakage of the insole are avoided, the aim that the insole and the outsole are different in color is achieved, and the color is richer. The production method of the PU elastic environment-friendly shoe sole is easy to operate and implement, the production cost is reduced, and the outsole is attached to the insole more firmly.

Description

technical field [0001] The invention relates to the field of shoe manufacturing, in particular to a PU elastic environment-friendly shoe sole, a production method thereof and a production mold. Background technique [0002] In 2012, the applicant applied for a patent for a hydrolysis-resistant PU elastic environmental protection shoe sole and its production method and production mold (201210271356.X). The content of the invention is to put the outsole with a hollow cavity into the PU injection mold, and then pour it Mix the PU liquid, let the PU foam in the cavity of the outsole, and produce a sole that wraps the entire PU in the outsole. Although this invention has the advantages of wear resistance, durability, environmental protection, elasticity, not easy to deform, light weight, deodorization, and treatment of foot diseases, the following problems still exist: [0003] 1. When the outsole is made of materials such as RB, TPR, TR, etc., since the above materials cannot b...

AI Technical Summary

Problems solved by technology

[0003] 1. When the outsole is made of materials such as RB, TPR, TR, etc., since the above materials cannot be compressed like PU or EVA, they will shrink. Parts are easy to swell, wrinkle, and more likely to break, resulting in quality problems; 2. Since the outsole cavity covers the entire PU, it can only be produced in one color, and it is extremely difficult to produce two colors, so the color of the sole is not rich; 3. 1. Due to the high and soft surroundings of the outsole cavity, it is easy to shrink or elongate during production, resulting in that the cavity cannot match the PU injection mold and is easily deformed during production; 4. If the surface and bottom of the outsole cavity If the inclination is too large, the materials other than the width of the face in the accommodation cavity will not be able to be hollowed out, causing the sole to be too heavy and thick, affecting elasticity and not being environmentally friendly; The weight of the sole and the increase in elasticity, the designers make the outsole thick and at the same time hollow out the outsole as much as possible. The outsole must be soft and increase the bumps. The matching points are increased. Since the sole is soft and thin, it is extremely difficult to fit the midsole and outsole by hand and cannot be mass-produced.

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