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1. 发明公开

EP1024940A4 METHOD AND APPARATUS FOR IN-LINE SPLITTING OF PLURAL-COMPONENT FIBERS AND FORMATION OF NONWOVEN FABRICS 审中-公开
标题翻译： VERFAHREN UND VORRICHTUNG ZUM SPALTUNG VON多元化纤维和UNDERHERSTELLUNG VON VLIERSTOFFEN
公开(公告)号：EP1024940A4
公开(公告)日：2001-07-18
申请号：EP98953364
申请日：1998-10-09
申请人： HILLS INC
发明人： HAGGARD JEFFREY S , WILKIE ARNOLD E , HARRIS FRANK O , DUGAN JEFFREY SCOTT
IPC分类号： A61F13/00 , B01D39/16 , B29C47/14 , D01D5/253 , D01D5/30 , D01F8/04 , D01F8/06 , D01F8/14 , D04H1/42 , D04H1/50 , D04H3/16 , D02G3/00
CPC分类号： D01D5/30 , D01D5/253 , D01F8/06 , D01F8/14 , D04H3/016 , D04H3/018
摘要： In-line fiber splitting in a spunbond process is achieved by differential heat shrinkage of two or more components of a plural-component fiber, such as a ribbon-shaped bicomponent fiber to produce a nonwoven fabric having superior properties. Two polymers that shrink to substantially different degrees upon application of heat are extruded from an array of orifices (32) of a spinneret (30) as components of plural-component fibers. Ribbon-shaped fibers having alternating first and second components having a difference in heat shrinkage of at least approximately ten percent result in a high degree of rapid separation of the fiber components. The array of plural-components fibers is drawn through an aspirator (36) and attenuated prior to being deposited on a web-forming belt (42) and conveyed to a heater (50) which heats the web to a temperature sufficient to cause differential heat shrinkage of the polymer components, thereby causing the fiber segments formed of the components to separate in less than approximately a second. After fiber separation, the web is bonded to form the nonwoven fabric.
摘要翻译：纺粘工艺中的在线纤维分裂是通过多组分纤维如带状双组分纤维中的两种或多种组分的差热收缩来实现的，以制造具有优异性能的非织造织物。两种聚合物在加热时收缩到基本不同的程度，从喷丝头（30）的孔阵列（32）挤出作为多组分纤维的组分。具有交替的第一和第二组分的热收缩率差至少约为10％的带状纤维导致纤维组分的高度快速分离。多组分纤维的排列通过抽吸器（36）抽出并在沉积在成网带（42）上之前被衰减并传送到加热器（50），加热器（50）将纤维网加热到足以引起差热的温度聚合物组分的收缩，由此导致由组分形成的纤维片段在小于约1秒内分离。纤维分离后，纤网被粘合以形成无纺织物。

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