Article having a coextruded polyester support film

Details Article having a coextruded polyester support film Article having a coextruded polyester support film

1974-07-23

1977-03-08

Ives, P. C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428480, 428508, 428511, 428516, 428517, 428518, 428519, 428520, 428910, 428413, 428425, 428447, 427412, 96115P, 428354, 428 57, 428 49, 428 50, 428414, 428284, 40125R, 2 93, 274 11E, B32B 2736, B32B 2706

Patent

active

040113582

ABSTRACT:
Coated sheet material having a support film which comprises a biaxially oriented, heat-set coextruded laminate formed from two or more polyester polymers, one layer of the laminate being highly crystalline and the coated layer being tough and non-crystalline. Coatings which normally adhere poorly to a biaxially oriented heat-set highly crystalline monofilm adhere firmly to the laminate. Coated sheet products include pressure-sensitive adhesive tape, lithographic printing plates, splicing tapes, and coated abrasives.

REFERENCES:
patent: 2961365 (1960-11-01), Sroog
patent: 3337364 (1967-08-01), Whitbourne
patent: 3515626 (1970-06-01), Duffield
patent: 3607354 (1971-09-01), Krogh et al.
patent: 3607616 (1971-09-01), Barbehenn et al.
patent: 3617352 (1971-11-01), Shima et al.
patent: 3767523 (1973-10-01), Schwarz
patent: 3900653 (1975-08-01), Riboulet

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