Dai Nippon Insatsu Kabushiki Kaisha

Keiji Hanamoto

Fumio Takagi

Kazushi Miyazawa

Takao Terauchi

A mutilayer film which combines excellent vacuum formability, excellent heat resistance during injection molding and excellent dimensional stability during printing of the film, and which can be suitably used as a base of a transfer film for three-dimensional conformability capable of satisfactorily printing onto the surface of an article having a complex three-dimensional shape.

Multilayer base film for three-dimensional conformability

A film which combines excellent vacuum formability, excellent heat resistance during injection molding and excellent dimensional stability during printing of the film, and which can be suitably used as a base of a transfer film for three-dimensional conformability capable of satisfactorily printing onto the surface of an article having a complex three-dimensional shape.

Base film for three-dimensional conformability

A strip-like pattern sheet has a plurality of patterns and register marks spaced apart from each other by a predetermined distance in its longitudinal direction. The pattern sheet is transported from a supply roll to a take-up roll in such a way that it covers the opening of a female mold. At the upper stream of the female mold, the register marks are detected so that a pattern-sheet-holding-and-transferring means holds the pattern sheet at a predetermined position and heats it. The pattern sheet is displaced by one pitch so as to cover the opening of the female mold. The softened pattern sheet is pressed by a compressed air against the cavity surface of the female mold with the cavity being evacuated. Thereafter the holding-and-transferring means is returned to its initial position and the female and male molds are mated so that molten resin is injected into the molding cavity defined between the female and male molds so that a pattern is imprinted on the surface of a molded article or finished product. The pattern may be imprinted or transferred in an efficient manner and the precise registration between the pattern and the surface of the molded article or finished product can be attained.

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Miyoshi, Japan

Keiji Hanamoto