Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1974-05-09
1976-07-06
Powell, William A.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156244, 156322, 428481, 428514, B29C 1900
Patent
active
039679985
ABSTRACT:
A container is provided formed from a blank made of a laminate which includes nonbrowning paperboard and at least an inner layer of substantially amorphous polyethylene terephthalate bonded to the paperboard by its own substance. A method of making this laminate is provided including the steps of heating an uncoated surface or both surfaces of the paperboard to a temperature of at least about 285.degree.F. and extruding the polyethylene terephthalate layer onto this surface or these surfaces. A method of cooking is provided including the steps of forming a container from the blank, placing food in the container and cooking the food at a temperature of up to about 400.degree.F.
REFERENCES:
patent: 2465319 (1949-03-01), Whinfield et al.
patent: 2961365 (1960-11-01), Sroog
patent: 3323965 (1967-06-01), Hanle et al.
patent: 3550835 (1970-12-01), Persson
patent: 3619215 (1971-11-01), Bard
patent: 3716369 (1973-02-01), Peulman
patent: 3737354 (1973-06-01), Hattori
patent: 3750873 (1973-08-01), Roman
patent: 3756495 (1973-09-01), Bemiss
E. I. Du Pont de Nemours and Company
Powell William A.
Simmons David A.
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