Process for producing easily adherable polyester film

Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Coating or impregnating workpiece before molding or shaping...

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2642356, 2642358, 2642893, 2642896, 427172, 427173, 4284237, 428484, B29D 900, B29C 1702, B32B 2718

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043648851

ABSTRACT:
A process for producing an easily adherable biaxially stretched polyester film, which comprises coating a primer composition consisting of (A) and aqueous dispersion of polyurethane and (B) a montan wax salt and optionally a nonionic or anionic surface-active agent on the surface of a polyester film which has not yet been stretched completely, drying the coating, completing the stretching of the coated film, and then heat-setting it thereby to form a primer coated layer on the film surface.

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patent: 3963820 (1976-06-01), Blakey
patent: 4000117 (1976-12-01), Shah
patent: 4093458 (1978-06-01), McGrail et al.
patent: 4132552 (1979-01-01), Paesschen et al.
patent: 4233352 (1980-11-01), Ono
patent: 4293508 (1981-10-01), Heirbaut et al.
patent: 4301053 (1981-11-01), Wolfrey
patent: 4307219 (1981-12-01), Larson

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