Film molding method

Details Film molding method Film molding method

1991-08-14

1993-12-28

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Treating shaped or solid article

To swell or plasticize

264345, 264348, B29C 7102

Patent

active

052737055

ABSTRACT:
A film molding apparatus and molding method wherein a gel state film is immersed in a vessel of a film supply unit. The film contains at least 50 weight % swelling agent relative to a polymer constituting the film. The vessel is filled with soaking liquid which acts so as not to destroy a swelling condition of the film caused by the swelling agent. Specifically, the molding method includes the steps of providing the above-noted film, heating a mold press die used for molding the film, press-molding the film in the press die and substantially drying the film by evaporating the swelling agent.

REFERENCES:
patent: 3966686 (1976-06-01), Asakura et al.

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