Pressure formed paperboard tray with oriented polyester film int

Details Pressure formed paperboard tray with oriented polyester film int Pressure formed paperboard tray with oriented polyester film int

1987-09-17

1990-02-13

Robinson, Ellis P.

Stock material or miscellaneous articles

Hollow or container type article

Paper containing

156151, 156224, 1562722, 1562733, 156277, 1563073, 156310, 426113, 426127, 426234, 428195, 428458, 428480, 428481, 4285375, 428910, B32B 2710, B65D 8500

Patent

active

049005944

ABSTRACT:
An ovenable food tray for cooking foodstuffs, such as frozen foodstuffs, in an oven of either the microwave or conventional type. The tray is formed from a flat, unitary laminate blank by deforming the blank in any conventional male and female die apparatus under pressure and heat. The laminate includes a food contacting PET bi-axially oriented film coating adhered to a paperboard base stock by means of a crosslinkable adhesive. The use of such a coating and such an adhesive formulation permits use of the tray in oven temperatures to about 400 degrees F. without delamination of the coating from the paperboard or cracking of the coating.

REFERENCES:
patent: 3819773 (1974-06-01), Pears
patent: 4147836 (1979-04-01), Middleton
patent: 4214035 (1980-07-01), Heberger
patent: 4287274 (1981-09-01), Ibbotson et al.
patent: 4337116 (1982-06-01), Foster et al.
patent: 4456164 (1984-06-01), Foster et al.
patent: 4486483 (1984-12-01), Caines
patent: 4518651 (1985-05-01), Wolfe, Jr.
patent: 4543280 (1985-09-01), Fujita et al.
patent: 4699845 (1987-10-01), Oikawa et al.
patent: 4735513 (1988-04-01), Watkins et al.
patent: 4784708 (1988-11-01), Allen

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