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Kenplas Forum ==> Resin & Additives ==> What is PETF?
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Polyester film (PETF) is very different from PETG and indeed PET. Polyester film is a semi-crystalline film produced by a roll quenching process followed by biaxial orientation (stretching the film in machine and transverse directions) and heat setting at temperatures around 230癈. Polyester film is used in many applications such as videotape, high quality packaging, professional photographic printing, X-ray film, floppy disks, etc. The film''s primary advantages are high thermal stability, mechanical strength and chemical inertness. In fact, PETF has one-third the tensile strength of steel and can withstand temperatures of up to 200癈. PETF is produced in a range of thicknesses from 3 gauge (0.6 祄) to 2000 gauge (500 祄).
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