Thermoformable laminated packaging material

Details Thermoformable laminated packaging material Thermoformable laminated packaging material

1988-11-28

1990-05-22

Seidleck, James

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428215, 428516, 428520, 4284758, 4284761, B65D 2500, B32B 2728

Patent

active

049276905

ABSTRACT:
A rigid thermoformable packaging material is provided which includes an outer layer of a nonfoamed oriented polystyrene and an inner layer of a functional polymer resin. The laminated packaging material can be produced by either thermal lamination or coextrusion. The packaging material is readily thermoformed into containers for medical or dental products or foods and is heat sealable, tough, resistant to chemicals, and resistant to cracking and tearing during handling by thermoforming equipment.

REFERENCES:
patent: 3249286 (1966-05-01), Palmer
patent: 3328196 (1967-06-01), Sincock
patent: 3589976 (1971-06-01), Erb
patent: 3748218 (1973-07-01), Newman et al.
patent: 4048428 (1977-09-01), Baird, Jr. et al.
patent: 4111349 (1978-09-01), Buckler et al.
patent: 4112181 (1978-09-01), Baird, Jr. et al.
patent: 4279957 (1981-07-01), Hiraoka et al.
patent: 4359499 (1982-11-01), Akao et al.
patent: 4440824 (1984-04-01), Bonis

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