Lamineret cook-in film

摘要

A laminate comprising first and second polymeric films. One of the films is heat shrinkable and the other of the first and second films is non-heat shrinkable. At least one of the first and second films has an oxygen permeance of no more than about 150 cm<3>/m<2>.atm.24 hours at 23° C. and 0% relative humidity. The first film comprises an outer layer which, even when untreated, has a surface energy of at least 0.034 J/m<2>, and at least about 10 weight percent of one or more polymers having a Vicat softening point of at least about 65° C. The first film outer layer forms a first outer surface of the laminate. The outer layer of the second film forms the second outer surface of the laminate. The laminate has an improved ability to be sealed about a forming shoe without necking down.