... multilayer coextrusion material. It can be used for frozen beef,mutton,pork,tuna fish and others. ... multilayer coextrusion material. It can be used for frozen beef,mutton,pork,tuna fish and others.With ... processing with the double-bubble technics.Applied to frozen beef, mutton and pork packing with bone ... 3.Good tensile strength and puncture resistance.4.Powder inside processing, easy to open and operate ...