One of the forms of xylene, para-xylene is used to make polyesters, which have applications in clothing, packaging and plastic bottles. The most widely-used polyester is polyethylene terephthalate (PET), used in lightweight, recyclable soft drinks bottles, as fibres in clothing, as a filling for anoraks and duvets, in car tyre cords and conveyor belts. It can also be made into a film that is used in video and audiotapes and x-ray films.
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