Thick composite polyester films

Details Thick composite polyester films Thick composite polyester films

1987-12-23

1989-11-28

Herbert, Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428220, 428332, 428336, 428480, B32B 702, B32B 2708

Patent

active

048837067

ABSTRACT:
Thick, composite polyester films, well adapted as base films, e.g., for the graphic arts, are comprised of a crystalline or semicrystalline polyester film substrate (A) having a thickness of at least 40 micrometers, said film substrate (A) having a coating, e.g., a coextrudate, of a sulfonated copolyester adhesion primer on at least one of the face surfaces thereof, and said sulfonated copolyester comprising at least 80 mol % of terephthalate recurring units and from 3 to 10 mol % of oxysulfonylate recurring units.

REFERENCES:
patent: 4476189 (1984-10-01), Posey et al.
patent: 4525419 (1985-06-01), Posey et al.
patent: 4585687 (1986-04-01), Posey et al.
patent: 4725483 (1988-02-01), Ishii et al.

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