Coated films with good low temperature sealing properties an hot

Details Coated films with good low temperature sealing properties an hot Coated films with good low temperature sealing properties an hot

1993-04-30

1995-05-30

Buffalow, Edith

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428349, 428516, 428910, B32B 516

Patent

active

054199603

ABSTRACT:
Novel coated films are disclosed wherein a base polymer film, e.g., oriented isotactic polypropylene, is coated with a composition comprising a copolymer of about 65 to 95 wt. % ethylene and about 5 to 35 wt. % of acrylic or methacrylic acid (an "ethylene copolymer") based on the weight of the polymer in which about 2 to 80% of the carboxylate groups are neutralized with metal ions from Group Ia, IIa or IIb of the Periodic Table, preferably sodium ions. Preferably the coating also contains microcrystalline wax and fumed silica. The coated films exhibit good low temperature sealing properties accompanied by satisfactory hot tack and resistance of the seals to immersion in water.

REFERENCES:
patent: 5066543 (1991-11-01), Hwo
patent: 5126198 (1992-06-01), Schinkel et al.
patent: 5169728 (1992-12-01), Murphy et al.

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