Overlay proofing film

Details Overlay proofing film Overlay proofing film

1988-05-26

1989-06-27

Herbert, Thomas J.

Stock material or miscellaneous articles

Composite

Of polyester

430160, 430167, 430271, B32B 2708, B32B 2730, B32B 2736, G03C 180

Patent

active

048429503

ABSTRACT:
An improved overlay proofing film comprising a substantially transparent polyester base film which is first coated on one or both sides with a non-light sensitive composition having a refractive index of about 1.6, said non-light sensitive composition consisting essentially of a copolymer of polymethyl methacrylate and methacrylic acid.

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patent: 4400847 (1984-04-01), Whittemore
patent: 4430419 (1984-02-01), Harada
patent: 4465572 (1984-08-01), Graham
patent: 4490505 (1984-12-01), Pendergrass

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