Patent ID: 7288316
Filing Date: 2007-10-30
Classification: B32B,C08G,C08J,Y10T

Abstract:
1. A heat sealable film consisting essentially of a film forming norbornene/-ethylene copolymer having a Tg of from about 30C to about 55C, a film of the film forming copolymer exhibiting a hot tack strength of greater than 10N when tested at a heat seal temperature below about 75° C. at a seal pressure of 44 psi, a seal time of 1 second, a cooling time of 0.1 second, a film sample width of 1 inch and a film sample thickness of 2 mil, wherein the peel speed is 200 mm/s, wherein further a film of the film forming copolymer exhibits a hot tack strength of greater than about 5N at all heat seal temperatures between about 75° C. and 150° C. at a seal pressure of 44 psi, a seal time of 1 second, a cooling time of 0.1 second, a film sample width of 1 inch and a film sample thickness of 2 mil, wherein the peel speed is 200 mm/s.