Title: Process for manufacturing a body of moisture-proof container for packaging

Abstract: A process for manufacturing a body of a moisture-proof container having at least two recesses for packaging purposes which comprises adhering a metal foil to a first thermoplastic resin film with a hot melt-type adhesive to form a laminated sheet, forming at least two closed blank portions in said laminated sheet by cutting only the metal foil, adhering a second thermoplastic resin film on the surface of the metal foil and stretch-forming said closed blank portions of the laminated sheet at a temperature wherein the hot melt-type adhesive and the thermoplastic resin films are softened, thereby forming said recesses.

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Inventors: Watanabe, Tetsuo (Kokubunji, JA)

Application Number: 428410
Filing Date: 1973-12-26
Publication_date: 1976-01-20
Assignee: Dai Nippon Printing Company Limited (Tokyo, JA)
Primary Class(es): 156/211 156/224, 156/257, 206/538
Other Classes:
US Patent Ref:

2618381	Nov, 1952	Gilbert	156/311.
3145112	Aug, 1964	Boegershausen	229/3.
3311229	Mar, 1967	Troll et al.	206/437.
3331495	Jul, 1967	Leckzik et al.	206/42.
3371404	Mar, 1968	Lemelson	29/527.
3645822	Feb, 1972	Widiger et al.	156/309.
3778323	Dec, 1973	Posner	156/285.
3780856	Dec, 1973	Braverman	206/42.

Other Refs:
Primary Examiner: Drummond, Douglas J.
Assistant Examiner: Lewris, Basil J.
Attorney: Stewart and Kolasch, Ltd.