Abstract: A coextruded film having an integral tear path is provided such that the tear path has a thickness that is smaller than the overall thickness of the coextruded film, said product being formed by a method and on an apparatus that introduces an elongated void in at least one of the extrudates before being combined with other extrudates into the coextruded film, said elongated void accounting for the reduced thickness of the tear path.
Type:
Grant
Filed:
July 26, 1982
Date of Patent:
February 21, 1984
Assignee:
Health-Ex Corporation
Inventors:
Walter P. Scarberry, Charles K. Vollman
Abstract: A coextruded film having an integral tear path is provided such that the tear path has a thickness that is smaller than the overall thickness of the coextruded film, said product being formed by a method and on an apparatus that introduces an elongated void in at least one of the extrudates before being combined with other extrudates into the coextruded film, said elongated void accounting for the reduced thickness of the tear path.
Type:
Grant
Filed:
January 5, 1981
Date of Patent:
October 12, 1982
Assignee:
Health-Ex Corporation
Inventors:
Walter P. Scarberry, Charles K. Vollman