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    • 2. 发明公开
    • Fiber extrusion pack including split distribution plates
    • Faserextrusionspaket mit geteilten Verteilungsplatten
    • EP2050843A1
    • 2009-04-22
    • EP07020537.2
    • 2007-10-19
    • HILLS, INC.
    • Haggard, Jeffrey, S.
    • D01D4/02D01D5/098
    • D01D4/06D01D5/0985
    • A fiber extrusion pack for extruding molten material to form an array of fibers includes a number of split distribution plates arranged in a stack such that each split distribution plate forms a layer within the fiber extrusion pack, and features on the split distribution plates form a distribution network that delivers the molten material to orifices in the fiber extrusion pack. Each of the split distribution plates includes a set of plate segments with a gap disposed between adjacent plate segments. Adjacent edges of the plate segments are shaped to form reservoirs along the gap, and sealing plugs are disposed in the reservoirs to prevent the molten material from leaking from the gaps. The sealing plugs can be formed by the molten material that leaks into the gap and collects and solidifies in the reservoirs or by placing a plugging material in the reservoirs at pack assembly.
    • 用于挤出熔融材料以形成纤维阵列的纤维挤出组件包括以堆叠方式布置的多个分裂分配板,使得每个分离分配板在纤维挤出包装内形成一层,并且分离分配板上的特征形成分布 网络将熔融材料输送到纤维挤出包装中的孔中。 每个分离分配板包括一组板段,间隙设置在相邻的板段之间。 板段的相邻边缘成形为沿着间隙形成储存器,并且密封塞被设置在储存器中以防止熔融材料从间隙泄漏。 密封塞可以由熔融材料形成,该熔融材料泄漏到间隙中并在储存器中收集和固化,或者通过在封装组件中将封堵材料放置在储存器中。
    • 10. 发明公开
    • METHOD AND APPARATUS FOR IN-LINE SPLITTING OF PLURAL-COMPONENT FIBERS AND FORMATION OF NONWOVEN FABRICS
    • VERFAHREN UND VORRICHTUNG ZUM SPALTUNG VON多元化纤维和UNDERHERSTELLUNG VON VLIERSTOFFEN
    • EP1024940A4
    • 2001-07-18
    • EP98953364
    • 1998-10-09
    • HILLS INC
    • HAGGARD JEFFREY SWILKIE ARNOLD EHARRIS FRANK ODUGAN JEFFREY SCOTT
    • A61F13/00B01D39/16B29C47/14D01D5/253D01D5/30D01F8/04D01F8/06D01F8/14D04H1/42D04H1/50D04H3/16D02G3/00
    • D01D5/30D01D5/253D01F8/06D01F8/14D04H3/016D04H3/018
    • 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.
    • 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。