Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1988-01-27
1990-10-23
Buffalow, Edith
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428332, 428483, 4284763, 428500, 428516, B29D 2200
Patent
active
049651099
ABSTRACT:
Thermoplastic films and bag structures having improved low temperature impact and puncture resistance properties and high resistance to heat comprise a film layer comprising a blend of polypropylene and a material selected from polyisobutylene, very low density polyethylene, polybutylene, and ethylene-methyl acrylate copolymer, and mixtures thereof. The films and bag structures preferably have an outer film layer of a resin material having a melt temperature which is higher than that of the other film layer. The outer film layer material is preferably a polyester or a polyamide. The films and bag structures are particularly suitable for use as frozen food storage containers and for subsequent heating and/or cooking of food therein.
REFERENCES:
patent: 4169910 (1979-10-01), Graboski
patent: 4291085 (1981-09-01), Ito et al.
patent: 4401256 (1983-08-01), Krieg
patent: 4488924 (1984-12-01), Krieg
patent: 4560598 (1985-12-01), Cowan
Exxon Elastomers for Polyolefin Modification-1975.
Vistanex.RTM. Polyisobutylene Properties and Applications, 1974.
Biel Edward N.
Tucker Edward B.
Buffalow Edith
First Brands Corporation
Wamer Gary L.
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