Non oxygen barrier packaging film and manufacture of the packaging film

摘要

A non-oxygen barrier packaging film is disclosed, which includes: (a) an outer layer comprising an ionomer to provide thermal resistance; and (b) an inner layer comprising a polymeric material having a sealing temperature lower than the sealing temperature of the outer layer, wherein the outer layer has a thickness of between 30-60% of the thickness of the packaging film. Also disclosed is a method of making a packaging film as described above, which includes the steps of (a) co-extruding a first layer comprising an ionomer and a second layer comprising a polymeric material having a sealing temperature lower than the first layer; and (b) cooling the co-extruded film. Further a method of packaging a food product is also described.