Patent ID: 7754258

Claim:
An extruded collagen film, made from an extrudable gel, wherein said film has: a collagen content that consists essentially of porcine collagen, wherein said porcine collagen consists essentially of sow collagen; a fat content below 20% on a dry weight basis of the film; and a ratio by weight of collagen to fat in the film of at least 2.5 to 1, wherein any collagen derived from sheep, poultry, birds and/or fish in said film is present in an amount of less than 10% by weight of the total collagen content in said film, and any non-sow porcine collagen in said film is collagen derived from young pigs and is present in an amount of less than 10% by weight of the total porcine collagen in said film, and wherein said film has an extrusion direction wet tear strength of greater than 300 gf/mm.