Foil-decorating injection molding machine

Details Foil-decorating injection molding machine Foil-decorating injection molding machine

1996-12-02

1998-12-22

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Female mold type means

264320, 264322, 264511, 4251261, 425127, 4251291, B29C 4516

Patent

active

058515607

ABSTRACT:
A foil-decorating injection molding machine is provided with an injection mold having a male mold and a female mold. The female mold has a cavity surface for forming a cavity, and a parting surface having an outer peripheral section on which to hold a decorative sheet, and an inner peripheral section extending between the inner edge of the outer peripheral section of the parting surface and the edge of the cavity surface in a concavely curved shape to allow the expansion of a peripheral portion of the decorative sheet around a decorating portion of the same during preforming. This reduces local strains in the decorative portion of the sheet and ensures a uniform thickness distribution of the sheet to prevent breaking and creasing of the sheet.

REFERENCES:
patent: 4360329 (1982-11-01), Hatakeyama
patent: 4618466 (1986-10-01), McGlashen et al.
patent: 4639341 (1987-01-01), Hanamoto et al.
patent: 4755120 (1988-07-01), Onnenberg et al.
patent: 4923539 (1990-05-01), Spengler et al.
patent: 4994224 (1991-02-01), Itoh et al.
patent: 5415536 (1995-05-01), Ohno

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