BOPP, Biaxially-Oriented Polypropylene, is a film that is made of polypropylene that has been “biaxially oriented” meaning that the film has been stretched in two different directions. The film is usually a multilayer film that relates to three-layer structures: One thick layer of polypropylene sandwiched between two thin layers of polypropylene. BOPP films have become more popular in the world market because of its unusual combination of properties: better shrinkage, seals well, twist retention and barrier, transparency, and stiffness. Common uses of BOPP films are potato chip bags, stationary, metalizing, flower sleeves, cable insulation, printing lamination, and many more.

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