POF Five Layer Shrink Film/ Polyolefin/POF Shrink Film or POF Bag With excellent clarity,polyolefin shrink film is a strong,biaxially oriented,heat shrinkable polyolefin film. Shrinkage is balanced and stable during packaging ... system. it is an economical shrink film of wide application. Available thickness: all kinds of thickness, for example 12, 15, 18,19, 20 ...