Abstract: 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.
Type:
Grant
Filed:
October 27, 1987
Date of Patent:
February 7, 1989
Assignees:
American National Can Company, Kendall McGraw Laboratories, Inc.
Inventors:
Jean E. Raniere, Steven L. Smith, Russell P. Gehrke, Richard E. Johnson, Jr.