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1. 发明授权

US3969462A Polyester yarn production 失效
标题翻译：涤纶生产线
公开(公告)号：US3969462A
公开(公告)日：1976-07-13
申请号：US521726
申请日：1974-11-07
申请人： Richard H. Stofan
发明人： Richard H. Stofan
IPC分类号： D01D5/084 , D01F6/62 , B29C25/00
CPC分类号： D01D5/084 , D01D5/088 , D01F6/62
摘要： A method and apparatus are disclosed for the production of a novel industrial polyester filament yarn of improved uniformity wherein a plurality of filaments are melt-spun into a heated zone coupled with controlled cooling. The yarn produced has improved long and short term Uster uniformity and improved uniformity of physical properties, particularly breaking strength, as shown by a reduced standard deviation of breaking strength. The yarn is produced by melt spinning into a heated zone which maintains the filaments molten for intervals below the spinneret face and subsequently quenching the filaments with a radial outflow of cooling gases, thereby producing a low birefringence yarn which is capable of being drawn at high draw ratios to high tenacities.
摘要翻译：公开了一种用于生产改进的均匀性的新型工业聚酯长丝纱线的方法和装置，其中将多根长丝熔融纺丝成与受控冷却结合的加热区域。所生产的纱线改善了长期和短期的乌斯特均匀性，改善了物理性能的均匀性，特别是断裂强度，如断裂强度的标准偏差减小所示。纱线通过熔融纺丝制成加热区域，其保持长丝在喷丝头表面下方熔融间隔，随后以冷却气体的径向流出淬火长丝，由此产生能够在高拉伸下拉伸的低双折射纱线比例高。

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