Ejection forming device of combination film and method thereof

Abstract

The invention relates to an injection molding device and a method which integrates a thin film and depends on a positioning post arranged at the periphery of a molding groove on a master die, and the positioning post has a locating hole that corresponds to a thin film and is pressed at the periphery of the thin film by a press plate; then a heating board is inserted into the molding groove, at the same time the thin film is heated and gets soft, the air is exhausted by an air vent that is communicated with an air channel groove at the bottom of the molding groove so as to lead the thin film to be molded and to be absorbed into the molding groove, and then the pressurizing and heating device is removed; a male die and a female die are fitted to form an expected clearance for the thin film between the male die and the female die, and the clearance is integrated with the thin film by injecting plastic material into the male die; after the die is opened, the finished product with a semi-finished product the surface of which is combined with a layer of thin film is taken out, and then the residual edge of the periphery of the semi-finished product is cut to form a plastic product with various surface patterns.

Description

technical field [0001] The present invention relates to an injection molding apparatus and method for plastic bonded films. Background technique [0002] Generally, there are the following methods for the combination of film and plastic surface: [0003] 1. After the plastic is injection molded, the transfer printing pattern is applied on the surface to present the aesthetics. [0004] 2. After the film is formed, attach it to the surface of the plastic molding. [0005] 3. A film with a release effect is placed in the injection molding mold in advance. After injection molding, the release paper is torn off, so that the pattern or monochromatic surface layer on the release paper after the high-temperature injection is adhered to the film. on the surface of the plastic product described above. [0006] Existing methods have the following deficiencies: [0007] 1. The existing film transfer printing method is slow in manufacturing, low in efficiency and relatively high in ...

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Problems solved by technology

[0008] 2. The existing method of attaching the film to the surface of the plastic product has a high defect rate and a slow speed. It is prone to wrinkles, which will cause uneven attachment and easy partial fall off

[0009] 3. The combination of injection molding and film is a high-temperature thermal transfer printing that applies injection molding to the pattern after molding, and the release paper must be removed when the mold is opened, and the surface layer transferred by this is easy to cause collisions damage, even

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