A molding process of two-color double-hardness sole

Abstract

The invention discloses a forming technology and a preparation method for a double-color and double-hardness sole. The forming technology and the preparation method for the double-color and double-hardness sole mainly includes the following steps: step 1, a mold is prepared, wherein a set of plastic injection mold is prepared; step 2, a plastic injection molding process is prepared, wherein a plastic injection molding machine is provided with two injection gun barrels which can be used for injecting plastics into the plastic injection mold simultaneously; step 3, the plastic injection molding process is carried out, wherein the plastic injection mold is placed on a mold frame of the plastic injection molding machine, the plastic injection molding machine is started, the two injection gun barrels are used for injecting the plastics into an upper mold body and a lower mold body of the plastic injection mold simultaneously, then the plastic injection mold is pre-pressed through a partition plate and then opened, the upper mold body and the lower mold body are separated, and then the partition plate is drawn out; and step 4, a bonding and cross-linked foaming forming process is carried out, wherein the upper mold body and the lower mold body are closed again, an upper-layer composite material and a lower-layer composite material are subjected to bonding and cross-linked foaming forming in a closed mold cavity, then the plastic injection mold is opened, and the double-color and double-hardness sole is obtained. According to the double-color and double-hardness sole produced through the preparation method, a shoe outsole portion and a shoe middle sole portion are not degummed when meeting water, do not separate from each other and are long in service live, the foaming forming process is fast, and a color bleeding phenomenon cannot happen.

Description

technical field [0001] The invention relates to the technical field of shoe soles, in particular to a molding process of a two-color and double-hardness shoe sole. Background technique [0002] China is the world's largest producer and exporter of footwear, and footwear has become a major pillar of China's economy. With the development of society, the functional requirements of all walks of life for footwear are becoming more and more diversified, especially for soles. Performance requirements are getting higher and higher. The sole usually includes the outsole and the midsole. Traditionally, the outsole and the midsole are usually the same color, which cannot meet the needs of modern people. The molding method of the sole is usually to shape the outsole and the middle and bottom respectively, and then glue them together. The process is more complicated. After the outsole and the midsole are formed separately, they need to be bonded together manually with an adhesive. Durin...

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Problems solved by technology

[0004] In order to overcome the above-mentioned deficiencies existing in the prior art, the object of the present invention is to provide a molding process of a two-color, double-hardness shoe sole with a simple molding process and high production efficiency. The two-color, double-hardness shoe sole produced by the molding process is The outsole and the midsole of the shoe are firmly combined, no color overflow occurs, no degumming or delamination when exposed to water, and a long service life

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