Abstract: Thermoformable plastic films can be formed into bags, pouches, trays, etc. which are useful when packaging foodstuffs and other products. These films enjoy widespread use in the packaging of meat and other oxygen sensitive products due to the gas permeation barrier provided. Thermoformable packaging films comprise one or more layers of thermoplastic, including olefinic copolymers, amorphous and crystalline nylons, ionomeric polymers, and polyolefins. By selecting the type and combination order of thermoplastics, a packaging film was developed that provides excellent impact and abrasion resistance, sealability, thermoformability, and optical clarity.

Abstract: Thermoformable plastic films can be formed into bags, pouches, trays, etc. which are useful when packaging foodstuffs and other products. These films enjoy widespread use in the packaging of meat and other oxygen sensitive products due to the gas permeation barrier provided. Thermoformable packaging films comprise one or more layers of thermoplastic, including olefinic copolymers, amorphous and crystalline nylons, ionomeric polymers, and polyolefins. By selecting the type and combination order of thermoplastics, a packaging film was developed that provides excellent impact and abrasion resistance, sealability, thermoformability, and optical clarity.

Abstract: A packaged article, especially a respiring foodstuff such as cheese which generates or releases gas during storage, and a permeable multilayer biaxially oriented film suitable for allowing escape of such gas while minimizing transfer of oxygen across the film which has a thin layer of a blend of EVOH and nylon. In a preferred embodiment the low cost film having a high permeability to CO2 and low O2 permeability is used to package cheese.

Abstract: A packaged article, especially a respiring foodstuff such as cheese which generates or releases gas during storage, and a permeable multilayer biaxially oriented film suitable for allowing escape of such gas while minimizing transfer of oxygen across the film which has a thin layer of a blend of EVOH and nylon. In a preferred embodiment the low cost film having a high permeability to CO2 and low O2 permeability is used to package cheese.

Abstract: A packaged article, especially a respiring foodstuff such as cheese which generates or releases gas during storage, and a permeable multilayer biaxially oriented film suitable for allowing escape of such gas while minimizing transfer of oxygen across the film which has a thin layer of a blend of EVOH and nylon. In a preferred embodiment the low cost film having a high permeability to CO2 and low O2 permeability is used to package cheese.

Abstract: Tubular, biaxially stretched, heat shrinkable multilayer film food casings comprising inner and outer polyamide layers on either side of a core layer predominantly of one or more ethylenic polymers having a functional moiety selected from the group of esters, anhydrides, and carboxylic acids, and a coextrusion process for making the film.