Multi-color multi-material injection molding method

A multi-material injection molding and molding method technology, applied in household components, applications, household appliances, etc., can solve the problems of large color differences between individual products, poor product consistency or stability, and difficulty in environmental protection and non-toxic thinners. To achieve the effect of reducing unstable factors, comfortable touch, and diversified visual gloss
CN110216838AInactive Publication Date: 2019-09-10湖南桑尼森迪玩具制造有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
湖南桑尼森迪玩具制造有限公司
Publication Date
2019-09-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a multi-color multi-material injection molding method. The method comprises the following steps of S1, selecting at least a first plastic material and a second plastic material as injection molding materials; S2, heating and plasticizing the first plastic material, injecting the first plastic material into a first mold cavity, and taking out the molded first plastic material to obtain a first injection molding body; S3, placing the first injection molding body into a second mold cavity and fixing the position of the first injection molding body; and S4, heating and plasticizing the second plastic material and then injecting the second plastic material into the second mold cavity, so that the melt of the second plastic material covers the local surface of the firstinjection molding body, and after cooling and curing molding are completed, taking out an obtained double-material composite injection molded part taking the first plastic material as a main body andthe second plastic material as a coating glue; and so on. According to the method, each time the injection molded part molded in the previous step is placed in a novel coating mold cavity for fixing,and the Nth plastic material is plasticized and injected into the mold cavity, so that a novel layer of coating glue is formed on the surface of the injection molded part molded in the previous step until products are completed. According to the method, the production process is simple; and the product is safer and healthier, is more stable in quality and higher in grade.
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Description

technical field

[0001] The invention relates to a molding process of plastic products, in particular to a multi-color and multi-material injection molding method for producing plastic products such as plastic toys. Background technique

[0002] Most of the toys produced in the existing market use ABS or PVC as injection molding raw materials. After the raw materials are plasticized, they are injected into a mold cavity for injection molding, and an uncolored intermediate product is obtained in one piece. The intermediate product is colored separately according to different parts by printing and other methods to obtain a beautiful and colorful product; the internal space structure of the mold cavity used is consistent with the shape and size of the target product. For example, in the production and manufacturing process of plastic cartoon characters, the plastic is plasticized and injected into the mold to obtain hair, face, neck, clothes, etc., and then the hair is spray-dye...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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