BoPET

<p>BoPET (biaxially oriented polyethylene terephthalate) is a <a href="/facts/Polyester/Ivp9CHpl">polyester</a> film made from stretched <a href="/facts/Polyethylene_terephthalate/Sc5UhmCB">polyethylene terephthalate</a> (PET) and is used for its high <a href="/facts/Tensile_strength/Cv2jPplR">tensile strength</a>, <a href="/facts/Chemical_stability/j0YIgc6F">chemical stability</a>, <a href="/facts/Dimensional_stability_(fabric)/1UjTgenI">dimensional stability</a>, <a href="/facts/Transparency_(optics)/PRryNNW6">transparency</a> <a href="/facts/Reflectivity/TT4sBwIw">reflectivity</a>, and <a href="/facts/Electrical_insulation/SfSXkrh5">electrical insulation</a>.  When <a href="/facts/Metallised_film/43tgeJUn">metallized</a>, it has  gas and moisture barrier properties. The film is "biaxially oriented", which means that the polymer chains are oriented parallel to the plane of the film, and therefore oriented in two axes. A variety of <a href="/facts/Company_(law)/psBVz9jr">companies</a> manufacture boPET and other polyester films under different <a href="/facts/Brand_name/hP6SnDWU">brand names</a>. In the UK and US, the best-known trade names are Mylar, Melinex, Lumirror and Hostaphan. It was the first biaxially oriented polymer to be manufactured on a mass commercial scale.
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BoPET open-in-new

BoPET