The most widely used thermoplastic polyester is poly ethlene terephthalate (long-chain molecule consists of repeating units shown as figure right) or (PET). The use of PET is growing very rapidly in textiles, packaging, audio, and video film, engineering resin applications, and such miscellaneous applications as cable wrap. PET is not made by a single stage process, but by the reaction between two chemicals, purified terephthalic acid (PTA) and ethylene glycol (EG). PET film's tensile strength is similar with aluminium films, and is three times that of PC and PA film. PET film is transparent. Its tensile strength can reach 1/3~1/2 of steel's if dealed by oriented draw. It's the toughest thermoplastic film.
Growth in production in 2010-11 and nearly 8.5% growth in sales of PET bottles and jars. While the production increased to 518 mn pieces from 488 mn, the sales were 519 mn in 2010-11 against 479 million in the previous year. The versatility of PET as a container for food products and beverages has pushed it to the centre stage. China is largely dependent on imports and India sees it as a potential. Accordingly the 12th plan draft envisaged an annual over 23% growth in installed capacity from over 800,000 ton at end 2011-12 to over 2.3 mn ton by end of the plan period in 2016-2020. As a whole there is a good scope for new entrepreneur to invest in this business.
Few Indian major players are as under
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