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What are polyester chips?

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Polyester chips are also known as PET chips or Polyethylene Terephthalate chips. These chips are used as the base of many types of plastics and polymers. Polyester chips exist in two forms based on the method of processing. These two forms are:
• The amorphous form which is commonly known as Bright or Super Bright Chips. These are transparent in nature.
• The semi-crystalline form which is commonly known as PET Semi-Dull Chips.

These polyester chips are made using purified terephthalic acid and ethylene. The polyester chips which are used in the textile industry are also called as Fiber grade PET chips, filament grade PET chips or textile grade PET chips. In textile industries, these chips are used for manufacturing polyester filament yarns and staple fiber yarns like POY, FDY.

The first or primary form of polyester yarns which are directly manufactured from the spinning process of polyester chips or directly from PTA (purified terephthalic acid) or MEG. are called POY or Polyester Partially Oriented Yarns. This type of trans is mostly used in making textured synthetic yarns. The highly dawn polyester yarns which are used for manufacturing high strength fabrics and textiles are called Fully Drawn Yarn (FDY). FDY is used in making knitted or woven textiles.

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