Polyester FDY is the abbreviation for Polyester Fully Drawn Yarn. It is also know as Polyester Filament Yarn (PFY) or Spin Draw Yarn (SDY). FDY is mainly used as weft or weaves in making fabrics. FDY can be knitted or woven with any other filament yarn to get fabric of various different varieties. It is mainly used in Home Furnishing Fabrics, Fashion Fabrics, Denim, Terry Towel and others.