Method of thermoforming

Details Method of thermoforming Method of thermoforming

1977-04-06

1979-02-27

Massie, Jerome W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156224, 156229, 156245, 156272, 264241, 428483, 428520, B32B 3120

Patent

active

041417712

ABSTRACT:
A method of thermoforming a thermo-plastics sheet carrying a protective layer of polyethylene on at least one of the surfaces of the sheet comprising heating the assembly of sheet together with its protective layer to above the softening point of the thermoplastic and subsequently stretching the assembly to a desired shape.

REFERENCES:
patent: 3205110 (1965-09-01), Rinderspacher et al.
patent: 3404056 (1968-10-01), Baldwin
patent: 3528865 (1970-09-01), Amberg et al.
patent: 3579395 (1971-05-01), Rath
patent: 3629381 (1971-12-01), Walker
patent: 3971687 (1976-07-01), Greer et al.
patent: 3971866 (1976-07-01), Johnson

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