Heat sealable thermoplastic films

Details Heat sealable thermoplastic films Heat sealable thermoplastic films

1976-03-29

1977-11-15

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428349, 428520, B32B 516, B32B 2708

Patent

active

040586456

ABSTRACT:
A coating composition to improve the physical characteristics of thermoplastic films, such as oriented polypropylene, comprising (1) an acrylic terpolymer of methyl methacrylate, methyl acrylate, and methacrylic acid; and (2) an aqueous-alkali soluble rosin, comprising an adduct of rosin with an alpha-beta unsaturated dicarboxylic acid esterified with a polyhydric alcohol.

REFERENCES:
patent: 2430934 (1947-11-01), Kemmler et al.
patent: 3355319 (1967-11-01), Rees
patent: 3458392 (1969-07-01), Kremer et al.
patent: 3533878 (1970-10-01), Aulik et al.
patent: 3753769 (1973-08-01), Steiner
patent: 3944695 (1976-03-01), Kosaka et al.

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