A process for producing a highly oriented polyester undrawn yarn comprising melt-spinning a polyester from a spinneret, solidifying the melt-spun yarn and taking up a solidified yarn at a take-up velocity from 2,500 to 4,500 m/min, wherein the spinning length is set within a specific range in accordance...http://www.google.es/patents/US4049763?utm_source=gb-gplus-sharePatente US4049763 - Process for producing a highly oriented polyester undrawn yarn
Process for producing a highly oriented polyester undrawn yarn
