초록 ▼

The invention discloses a multiple layer film useful in packaging, and the packages made therefrom. A first layer of the film is a material containing an ester group, a polycarbonate or a polyether block amide copolymer. A second layer of the film is a sealant, preferably polypropylene polymer blend

The invention discloses a multiple layer film useful in packaging, and the packages made therefrom. A first layer of the film is a material containing an ester group, a polycarbonate or a polyether block amide copolymer. A second layer of the film is a sealant, preferably polypropylene polymer blended with an elastomeric styrene ethylene butylene styrene copolymer. A third functionally adhesive layer is between the first and second layers. The composition of the third adhesive layer is typically either a polypropylene modified with a carboxy group such as an organic acid or anhydride or a styrene ethylene butylene styrene copolymer.

대표청구항 ▼

A multiple layer film, comprising: (a) a first layer, the composition of said first layer being selected form the group consisting of polyesters, copolyesters, polycarbonates, and polyether block amide copolymers; (b) a second sealant layer, the composition of said second layer comprising a composit

A multiple layer film, comprising: (a) a first layer, the composition of said first layer being selected form the group consisting of polyesters, copolyesters, polycarbonates, and polyether block amide copolymers; (b) a second sealant layer, the composition of said second layer comprising a composition of polypropylene polymer and a styrene ethylene butylene styrene copolymer; and (c) a third adhesive layer adhering said first layer to said second layer with good adhesion, said third layer being positioned between said first and second layers, the composition of said third adhesive layer being styrene ethylene butylene styrene copolymer.