Film forming equipment and method

Abstract

The invention relates to film molding equipment and a film molding method thereof. The film molding equipment comprises a machine table, an upper film unit and a lower film unit which are arranged on the machine table, a heating unit and a prepressing device. The lower film unit is arranged below the upper film unit and can drive the neighboring upper film unit and a film can be placed on the lower film unit. The prepressing device comprises a prepressing element which is arranged between the upper film unit and the lower film unit and the prepressing unit can be driven to lean against the lower film unit downwards to clamp the film between the prepressing element and the lower film unit; so that the film can not warp and deform in the process of being heated by the heating unit. With the method which has two phases of molding steps, the rebound phenomenon caused by the recovery stress in the process of molding film can be reduced and a comparatively real external structure can be obtained.

Description

technical field [0001] The invention relates to a film forming equipment and a film forming method, in particular to a film forming equipment and a forming method for heating a film first and then performing high-pressure forming. Background technique [0002] Generally, in order to have a decorative pattern on the surface of a plastic product, the decorative pattern can be attached to the surface of the plastic product by thermal transfer printing, or, through the process of In-mold decoration (IMD for short), the mold Injection molding is mainly to print the pattern to be decorated on a plastic film, and form a predetermined shape structure by high pressure molding or vacuum forming, and then cut the excess material around the plastic film, and then put it Injection molding is carried out in the mold, and the plastic film is combined with the injection-molded plastic, so that the decorative pattern on the plastic film is covered on the surface of the injection-molded produ...

AI Technical Summary

Problems solved by technology

The disclosed patent case is to first fix the plastic film 400 on a carriage 41 to be heated by the heating element 42, and then send the carriage 41 together with the plastic film 400 into the upper die 43 and the lower die. 44 between high pressure forming operations, but this forming equipment only performs one stage of high pressure forming steps (when the upper and lower dies 43, 44 are clamped), so it is still only suitable for applications where the required deformation range is small molding work

[0010] It can be seen that the above-mentioned...

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