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Polyethylene terephthalate

Polyethylene terephthalate (aka PET, PETE, PETP) is a plastic resin used to make beverage, food and other liquid containers, as well as for some other thermoforming applications.

It exists both in as an amorphous (transparent) and as a semi-crystalline (opaque and white) material.

PET was patented in 1941 by the Calico Printer's Association of Manchester.

The PET bottle was patented in 1973.

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