Patent ID: 7993560
Filing Date: 2011-08-09
Classification: B29B,B29C,B29K,C08J,Y10T

Abstract:
1. A method of producing packaging for meat comprising: introducing a first polymer into an extruder; introducing a masterbatch of an additive containing polymer into the extruder to form a polymer blend; wherein the additive is an NO donating compound; wherein the masterbatch is made by a) heating a base polymer to a temperature above a melting point of the base polymer to form a polymer melt; b) introducing into the polymer melt a solution comprising a salt and water; c) mixing the solution with the polymer melt in the extruder to form a blend; d) allowing at least a portion of the water to vaporize and to vent from the extruder; and e) extruding the blend to form the masterbatch; and forming a packaging film from the masterbatch containing blend; and fabricating the film into a package, wherein the film forms an inner layer of the package.