Method for producing plastic products with reinforced heat...

Details Method for producing plastic products with reinforced heat... Method for producing plastic products with reinforced heat...

2007-12-11

2007-12-11

Goff, John L. (Department: 1733)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C156S065000, C156S209000, C156S292000, C156S306600, C156S308400, C005S706000

Reexamination Certificate

active

10916696

ABSTRACT:
A plastic product is fabricated from plastic sheets by heat sealing the plastic sheets to form an enclosure member. In order to strengthen the heat-sealed joints of the plastic sheets, the plastic sheets are thickened at portions where the heat-sealed joints are to be formed. Preferably, the heat-sealed joints are formed in such a manner that the cross-section of the heat-sealed joints is smaller than that of the thickened portions of the plastic sheet, thereby preventing effectively the non-thickened portions of the plastic sheets from being affected adversely by the heat sealing process.

REFERENCES:
patent: 818321 (1906-04-01), Whall
patent: 3959052 (1976-05-01), Stanek
patent: 4218274 (1980-08-01), Mollura
patent: 4343667 (1982-08-01), Hollis
patent: 4868022 (1989-09-01), Marx et al.
patent: 5137592 (1992-08-01), LaBianco
patent: 5249323 (1993-10-01), Kikuchi et al.
patent: 5329656 (1994-07-01), Leggett
patent: 5611879 (1997-03-01), Morman
patent: 5804020 (1998-09-01), Akao et al.
patent: 6178723 (2001-01-01), Mossbeck
WO 96/33867 Oct. 1996 Diehl.

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