Injection mold

Details Injection mold Injection mold

1987-07-23

1988-06-21

Woo, Jay H.

Static molds

Uniting preform with molding material

Split mold clamps and supports preform

156289, 249115, 249144, 249151, 249175, 249176, 264264, 425112, 425127, 4251291, 425542, 425DIG55, B29C 4514

Patent

active

047520590

ABSTRACT:
A transfer film comprising a base film and a releasant layer, an ink layer and an adhesive layer laminated on the base film in this order is inserted into a cavity of an injection mold, and injection molding material is injected into the cavity. After the molded article is removed from the mold, the base film is peeled off and the ink layer is transferred to the surface of the molded article. The injection mold has a coring pin for forming an opening in the molded article and the contact surface of the coring pin to be brought into contact with the adhesive layer of the transfer film has poor adhesion to the adhesive layer so that the bond strength between the contact surface of the coring pin and the adhesive layer is lower than those between the ink layer and the releasant layer and between the releasant layer and the base film.

REFERENCES:
patent: 3925530 (1975-12-01), Rees
patent: 4061455 (1977-12-01), von Holdt
patent: 4269579 (1981-05-01), Thomas

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