Abstract: Molecularly oriented films are produced which comprise a layer containing a blend of EVOH and nylon. The films exhibit a desirable balance of oxygen barrier and strength properties, and are ideally suited for many packaging applications.

Abstract: Molecularly oriented plastic films have five molecularly oriented layers. A first layer provides a barrier to gaseous transmission through the film and has a composition of 0% to 50% nylon or nylon copolymer, and conversely 50% to 100% ethylene vinyl alcohol. Second and third adhesive layers are adhered to the surfaces of the first layer, and have compositions comprising olefinic polymers, or copolymers, or blends thereof, the compositions having carboxyl modifications therein. Fourth and fifth layers are adhered to the second and third layers on the respective surfaces opposite the first layer. The fourth and fifth layers comprise 40% to 100% ethylene vinyl acetate and 0% to 60% linear low density polyethylene. Also disclosed are processes for making the oriented five layer films.

Abstract: A highly desirable blend has ethylene vinyl alcohol copolymer blended with a thermoplastic polymer composition. Preferred blends are compatible when the blend is formed into a film and oriented. The invention contemplates the blend composition, the blend composition incorporated into a film, an oriented film, a multiple layer oriented film, a method of making the film, and the film formed into a shrink bag.

Abstract: Molecularly oriented plastic films have five molecularly oriented layers. A first layer provides a barrier to gaseous transmission through the film and has a composition of 0% to 50% nylon or nylon copolymer, and conversely 50% to 100% ethylene vinyl alcohol. Second and third adhesive layers are adhered to the surfaces of the first layer, and have compositions comprising olefinic polymers, or copolymers, or blends thereof, the compositions having carboxyl modifications therein. Fourth and fifth layers are adhered to the second and third layers on the respective surfaces opposite the first layer. The fourth and fifth layers comprise 40% to 100% ethylene vinyl acetate and 0% to 60% linear low density polyethylene. Also disclosed are processes for making the oriented five layer films.

Abstract: Linear low density polyethylene is used in multiple layer, molecularly oriented films. Novel blends of linear low density polyethylene with ethylene vinyl acetate copolymer are disclosed, and used in molecularly oriented multiple layer films. Bags made from the multiple layer films are especially useful for shrink packaging, and particularly for shrink packaging of meats having large cavities.

Abstract: Linear low density polyethylene is used in multiple layer, molecularly oriented films. Novel blends of linear low density polyethylene with ethylene vinyl acetate copolymer are disclosed, and used in molecularly oriented multiple layer films. Bags made from the multiple layer films are especially useful for shrink packaging, and particularly for shrink packaging of meats having large cavities.