发明授权
US4049763A Process for producing a highly oriented polyester undrawn yarn 失效
高取向涤纶未拉丝纱的制造方法

Process for producing a highly oriented polyester undrawn yarn
摘要:
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 with the take-up velocity, yarn denier and maximum allowable tension of the yarn.
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