Process for thermoforming thermoplastic resin sheet

Details Process for thermoforming thermoplastic resin sheet Process for thermoforming thermoplastic resin sheet

1994-03-22

1996-11-05

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264458, 264512, 264522, 4251744, 425384, B29C 5110, B29C 5142

Patent

active

055714730

ABSTRACT:
A process for producing a formed article by heating a thermoplastic resin sheet and then thermoforming a part to be formed involves heating the part to be formed by placing in contact with a heating plate while at least a part of a non-formed part of the thermoplastic resin sheet is not heated by placing in contact with the heating plate, and then heating the part to be formed and at least a part of the non-formed part by placing them in a non-contact state with a heating means is disclosed.

REFERENCES:
patent: 2900665 (1959-08-01), Walker
patent: 3746497 (1973-07-01), Neil
patent: 4778372 (1988-10-01), Mutti et al.
patent: 4909722 (1990-03-01), Wakayama et al.

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