Polyethylene terephthalate is produced from ethylene glycol (usually referred to in the trade as MEG,for monoethylene glyco) and dimethy tarephthalate(DMT)(CGH4(CO2CH3)2) but mosty terephthalic acid (Known in the trade as "PTA",for purified terephthalic acid).
Polyethylene terephthalate (PET)is a polar plastic material from the family of polyesters. PET shows good sliding and wear behavor, and retains a high breaking strength and shape retention,even at elevated temperatures.
PET is the most common thermoplastc polymer resin of the polyester family and is used in fibres for cothing, containers forliquids and foods, and thermoforming for manufacturing, and in combina-tion with glass fibre for engineering resins.