Overlay proofing film

Stock material or miscellaneous articles – Composite – Of polyester

Patent

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Details

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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