Method of making a collagen membrane from porcine skin

Abstract From the Canadian patent

Collagen membranes are formed from porcine rinds (i.e. pig skins) for us in a variety of applications and most preferably, for wrapping food products such as hams and the like. First, after removing skins from the porcine the skins are promptly frozen. In later processing the rinds are thawed and then enzymatically defatted. Then a quick alkalinic hydrolyzation is performed on the rinds. Then an acidic hydrolyzation is performed on the rinds. The rinds are then ground into a gel-like fluid mass. Finally the fluid mass is extruded, sheeted and dried into a collagen membrane. The collagen membrane produced can be in preferred embodiments, used for wrapping food products such as hams.