What is a opp bag? And what's the difference between PE plastic bags?

What is a OPP bag? And what's the difference between PE plastic bag is OPP bag? OPP bag is made of OPP material bags, OPP material is made of PP material for directional tensile, still have a kind of material/BOPP is made of PP material for two-way stretch. OPP bags high transparency, but also more hard and brittle. OPP plastic bags are widely used in clothing industry, food industry, stationery industry, cosmetic industry and so on, using range and its wide, similar to PP bag. What's the difference between a opp bag and PE bag? 1 material texture and physical properties of the material of OPP bag and PE plastic bag simple sense is completely different, OPP is hard brittle, PE is more soft, the transparency of OPP is much higher than PE. OPP sealing properties are very good, and PE is not so good. Texture and properties of OPP bag with PP bag is similar, is only slightly harder material. OPP card head bag: 2 use the OPP bag and PE bag use is different. Although have application in the field of clothing, OPP bag is essentially as self-adhesive bags, and PE bags can be made as self-adhesive bags, zipper bags, handbags and other bags. The purpose of the PE bag is broader than the purpose of the OPP bags. OPP adhesive bag: ENDPE/PO/PP/PVC/CPE/PPE/OPP/EVA