Patent ID: 6479116
Filing Date: 2002-11-12
Classification: B32B,Y10T

Abstract:
A multi-layered structure comprising:a) a first exterior layer comprising an ethylene/alpha-olefin copolymer having a density of less than 0.916 g/cc and a melting peak temperature of greater than 118Â° C.; b) a second exterior layer comprising a polymeric material selected from the group consisting of polyesters, copolyesters, polyamides and polyolefins, that is autoclavable as defined by the test procedure herein wherein film specimens were prepared 1 inch wide by 4 inches long (machine direction); a line was drawn 0.5 inch from each end of the film specimen providing a 3-inch test length; a static weight of approximately 100 gram was connected to one end of the specimen at the drawn line; a clip was attached to the other end at the drawn line, and the specimen (with the 100 gram static weight) was hung in a Pelton & Crane model Delta 10 autoclave; the specimens were sterilized for one hour at 121Â° C.; after cooling; the specimens were removed and measured to determine change in length; the test was conducted 3 times for each specimen, and the results reported are an average; a structure is considered to be autoclavable if the change in length is less than 60%; and c) at least one layer that is positioned between the first exterior layer and the second exterior layer and that provides adequate adhesion to prevent delamination or separation of the layers of the multilayered structure.