Low-pressure injection molding technology for directly generating grains on skin
A low-pressure injection molding and skinning technology, applied in the direction of coating, etc., can solve the problems of long molding cycle and large investment in equipment, and achieve the effect of good skin quality
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[0025] The low-pressure injection molding process for directly producing skin textures on the skin of the present invention is used to produce plastic parts with skin on the backing material. The process first needs to manufacture a set of specific molds according to the shape of the product, etch the concave and convex patterns on the inner surface of the fixed mold cavity of the mold for reverse imprinting on the skin, and install the heating element and the inside of the fixed mold. Cooling water pipe. Before injection, the fixed mold is preheated to a certain temperature. The temperature range can be selected within the range of 100-160°C according to the type of plastic skin, and the temperature is kept constant by controlling the heating element and the cooling water. After the fixed mold is preheated, put the pre-cut plastic skin without patterns on the surface, such as polyvinyl chloride film, polypropylene film, polyurethane film or thermoplastic polyolefin film, into ...
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