MULTIPLE LAYER FILM AND CONTAINER MADE THEREFROM

摘要

Multiple layer films and containers. The films have a first layer of either nylon 6,6 or a combination of nylon 6,6 with moieties of a second nylon polymer wherein the melting point temperature of the combination is greater than the melting point temperature of the corresponding second nylon polymer. A second heat sealable layer comprises a polymeric composition having a melting point temperature between about 110.degree.C. and at least 10.degree.C. less then the melting point temperature of the first layer. A third adhesive layer can be disposed between the first and second layers. The containers are susceptible of being sealed with included gas at low pressure, and subsequently boiled in water without rupture of the seals. The film is preferably coextruded from tubular die, thereby setting forth a new method for forming a multiple layer film comprising a combination of a first layer having a first composition of nylon 6,6, optionally combined with moieties of a second nylon polymer in a composition having a melting point temperature greater than that of the corresponding second nylon polymer, and a second layer having a second polymeric composition.