Polyethylene terephthalate yarn is prepared by spinning under high stress conditions in the transition region between oriented-amorphous and oriented-crystalline undrawn yarns by selection of process parameters to form an undrawn yarn that is a crystalline, partially oriented yarn with a crystallinity...http://www.google.fr/patents/US5403659?utm_source=gb-gplus-shareBrevet US5403659 - Dimensionally stable polyester yarn for high tenacity treated cords
Dimensionally stable polyester yarn for high tenacity treated cords
