Method for elongating foil

Details Method for elongating foil Method for elongating foil

2007-12-14

2010-02-02

Lee, Edmund H. (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Starting material is nonhollow planar finite length preform...

C264S553000, C264S572000, C264S511000, C264S513000, C264S516000, C264S267000, C264S275000, C264S250000, C264S255000, C264S294000

Reexamination Certificate

active

07655178

ABSTRACT:
A method for elongating a foil, comprising steps of: providing an injection molding device, the injection molding device comprising a male mold having a projecting part protruding and a female mold defining a cavity; transmitting the foil into the injection molding device and between the male and female molds; clamping the male and female molds to form a molding space, the molding space being separated into a first airproof space adjacent to the female mold and a second airproof space adjacent to the male mold by the foil; vacuuming the first airproof space to suck the foil toward the first airproof space; and inputting thermal medium into the second airproof space to press the foil to cling to the inner surface of the cavity of the female mold.

REFERENCES:
patent: 5198238 (1993-03-01), Baxi
patent: 6251333 (2001-06-01), Zheng et al.
patent: 6475423 (2002-11-01), Masterson et al.
patent: 200405736 (2004-02-01), None
patent: 2004034505 (2004-02-01), None
patent: 2004050736 (2004-02-01), None

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