Patent 7569281 was granted and assigned to Kraton (polymer) on August, 2009 by the United States Patent and Trademark Office.
What is claimed is a flexible packaging film having improved toughness without compromise of other physical properties. The flexible packaging film is a laminate of at least two film layers of a polyolefin and at least one film layer of a block copolymer. The block copolymer employed in the present invention is a selectively hydrogenated high vinyl block copolymer.