PELICULA TERMOPLASTICA;TUBO SEM COSTURA;RECEPTACULO;PROCESSO DE APERFEICOAMENTO DE CARACTERISTICAS DE MANUSEIO E SELAGEM TERMICA,EM TEMPERATURAS DE RETRACAO,DE PELICULA SUJEITA A RETRACAO POR CALOR

摘要

Disclosed is a multi-layer, heat shrinkable, thermoplastic packaging film which will produce heat seals having improved strength both in the presence of and absence of grease at elevated temperatures, e.g., at shrink temperatures. The layer providing the sealing surface comprises an ethylene-vinyl acetate copolymer which is more crystalline and about half the thickness of the adjacent layer of less crystalline ethylene-vinyl acetate copolymer. Bags for food products can be made from the film at a faster rate than with prior art films.