B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
18/1041, 96/214,
B32B 27/08 (2006.01) B44D 3/18 (2006.01) C08J 7/04 (2006.01) G03C 1/93 (2006.01)
Patent
CA 1223710
ABSTRACT An oriented self-supporting polyester film having a continuous cross-linked primer coating on one or both sides thereof. The polyester film is prepared by melt extruding a substantially amorphous polyester film and thereafter orienting the film by stretching in one or two directions and heat setting the film. The primer coating is applied to the film from an aqueous medium prior to stretching in one direction or subsequent to stretching in one direction but prior to stretching in a mutually perpendicular direction. The primer coating consists essentially of a copolymer of at least about 50 percent by weight of polymerized vinyl acetate, from about 1 to about 15% by weight of a copolymerized functional group-containing comonomer which in the copolymerized state is capable of inter-molecular crosslinking by the application of heat, and from about 0 to 49% by weight of one or more halogen-free monoethylenically unsaturated copolymerized monomers.
468092
Culbertson Edwin C.
Farrar Grover L.
Bereskin & Parr
Mitsubishi Polyester Film Llc
LandOfFree
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