Injection molding method for in-mold ornament

Abstract

The invention relates to an injection molding method for an in-mold ornament. The method comprises the following steps of: A) performing primary molding, namely, providing a membrane on which a decorating pattern is printed, feeding the membrane into a first molding die, closing a first male die and a first female die of the first molding die on both sides of the membrane and performing injection molding by using a transparent injection molding material so as to obtain a primary molded product; B) standing the primary molded product for a set period of time; and C) performing secondary molding, namely, putting the primary molded product into a female die of a second molding die for secondary molding and performing secondary injection molding by using a nontransparent injection molding material so as to obtain a finished product. An injection molding method for the in-mold ornament in the prior art is improved and an injection molding product has three-dimensional effect and stereovision through two-time injection molding.

Description

technical field [0001] The invention relates to an injection molding method for in-mold decoration. Background technique [0002] In-mold decoration injection molding technology (In Mold Reprint) is currently mostly used in the manufacture of mobile phones, notebook computers and other casings. Usually, the plastic casing of the product manufactured by IMR technology basically adopts one-time injection molding. By adding a layer of patterned film during the injection molding process, a decorative pattern layer is formed on the surface of the injection molded product. Because the patterns formed on the surface of the product are all It is flat, so it lacks three-dimensional effect and layering, and the surface pattern is relatively simple. In addition, the injection molded products produced by in-mold decoration injection molding technology are usually relatively thick, and when processing thin-walled products, the fluidity of the rubber material is poor and it is difficult ...

AI Technical Summary

Problems solved by technology

Usually, the plastic casing of the product manufactured by IMR technology basically adopts one-time injection molding. By adding a layer of film with a pattern during the injection molding process, a decorative pattern layer is formed on the surface of the injection molded product. Because the patterns formed on the surface of the product are all Flat, so it lacks three-dimensional effect and layering, and the surface pattern is relatively simple

In addition, the injection molded products produced by in-mold decoration injection molding technology are usually relatively thick, and when processing thin-walled products, the fluidity of the rubber material is poor and it is difficult to form

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