John L. Steiniger - Westlake OH Glen D. Schaaf - Avon Lake OH William S. Greenlee - Avon Lake OH Elaine A. Mertzel - Rocky River OH
Assignee:
The B. F. Goodrich Company - Brecksville OH
International Classification:
B32B 702 A47G 906 B29C 6500
US Classification:
428217
Abstract:
A hinged flexible article is provided which has rigid or semirigid substrate means with an insert of a hinge material which permits repeated flexing of the article about the hinge without failure. The substrate means has a hardness of at least about 35 Shore D as measured by ASTM test D-2240, while the hinge material has a hardness of from about 25 to about 60 Shore D as measured by ASTM test D-2240.