Patent ID: 8545971
Filing Date: 2013-10-01
Classification: B29C,B29K,B32B,D01F,Y10T

Abstract:
1. A multi-layer film comprising: a first layer wherein the first layer is a polylactic acid, and wherein the polylactic acid comprises poly-L-lactide, poly-D-lactide, or poly-LD-lactide; and a second layer comprising polyethylene or polypropylene and a reactive modifier, wherein when the second layer comprises polypropylene, the polypropylene is a high crystallinity polypropylene homopolymer having a xylene soluble fraction of less than 1.5% as determined in accordance with ASTM D5492-98, a polypropylene heterophasic copolymer, or combinations thereof, and wherein the reactive modifier consists of one or more epoxy-functionalized polyolefins, wherein the epoxy-functionalized polyolefin is glycidyl methacrylate grafted polypropylene, polyethylene co glycidyl methacrylate, or combinations thereof, wherein if the epoxy-functionalized polyolefin is glycidyl methacrylate grafted polypropylene, the glycidyl methacrylate grafted polypropylene is prepared by grafting gycidyl methacrylate onto polypropylene in the presence of an initiator and a multi-functional acrylate comonomer.