Low temperature impact and puncture resistant thermoplastic films and bags therefrom.

摘要

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 copolymer 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.