Center folded pof film Center Folded (CF) it means 2 layers of pof shrink film, for example if it is 350mm width center folded, when it is open, then it becomes 700mm width. It is wildly used in vertical automatic packaging machine which has a triangle device to fold the film to pack the goods inside 2 layers. Thickness can be from 10um to 25um, and width can be from 20cm to 200cm CF.Thickness (um)Width (mm)Length (m)Net weight one roll (kgs)12um300mm166711.0712um350mm166712.9115um400mm133214.7415um450mm133216.5819um400mm106714.9519um450mm106716.8225um500mm80018.4425um550mm80020.28