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How to distinguish PP PE PET Cpp OPp Bopp

First of all, look at the transparency. For general pellets, pe has the worst transparency, pp is slightly better, pet is very bright and feels hard.

The transparency and stiffness of pet film is the best, followed by bopp, followed by opp, cpp film is generally thicker and has a certain toughness, pe film generally has poor transparency, softness and good toughness

1, opp is a plastic bag name 2, opp, pe, pet, etc. are all plastic products 3, overload protection, English called "opp" 4, opp (n-phenylphenol) 5, Ontario, Canada Provincial police=oppopp is polypropylene, o should mainly refer to the production process! opp: directional, position-extensible polypropylene, is a kind of polypropylene and bidirectional polypropylene (bopp) opp main products: opp tape: polypropylene film as The base material has the advantages of high tensile strength, light weight, non-toxic and tasteless, environmental protection, wide range of use, etc. OPP bottle: light weight, low cost, improved transparency, good heat resistance, suitable for hot filling. In recent years, Two-way polypropylene (opp) transparent bottle has become a substitute for pet bottle. pp is polypropylene, polypropylene. It can be used as general structural parts, corrosion-resistant chemical equipment parts, and heated electrical insulation parts. The identification of waste plastics mainly includes: plasticizing temperature identification method, combustion identification method, density identification method, plasticizing temperature identification method: plasticizing temperature ldpe110115; hdpe140145; lldpe125130: pp165170ps145150; pvc150170; Uninterrupted combustion; no smoke, melting and dripping; such as paraffin burning smell pp and pe flame color same; same as above black smoke, melting and dripping; such as petroleum smell ps orange flame; same as above thick black smoke, softening and foaming; The upper part of the pvc is yellow, the bottom is green, and the white smoke is self-extinguishing from the fire, and it becomes soft and can be spun; such as hydrogen chloride, the pungent pet can be broken into pieces when it burns uninterruptedly yellow and blue; , When uncolored, it is translucent, flexible and flexible. lldpe feels softer, hdpe is slightly harder, pp is harder than pe, and has better transparency, when it is not colored, it is white and translucent. Better than pe pp. Soft products are flexible and tough. Hard products have hardness higher than ldpe but lower than pppet. The bottle material pet is divided into: the bottle mouth is crystallized as a high temperature material, and the bottle mouth and the bottle body are the same color as a low temperature material....