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1. 发明授权

US06783722B2 Apparatus and method for producing a nonwoven web of filaments 失效
标题翻译：用于生产细丝非织造纤网的装置和方法
公开(公告)号：US06783722B2
公开(公告)日：2004-08-31
申请号：US10219134
申请日：2002-08-15
申请人： Thomas B. Taylor
发明人： Thomas B. Taylor
IPC分类号： D04J300
CPC分类号： D04H3/16 , D01D5/0985 , D04H3/04
摘要： Spunbond nonwoven fabrics are produced with an apparatus which comprises a spinnerette having a plurality of orifices for extruding filaments; an attenuator for receiving and attenuating the filaments; and a collection surface upon which the filaments are deposited to form a nonwoven web. A filament diffuser is positioned between the attenuator and the collection surface in the path of filament travel. The diffuser comprises a pair of opposing divergingly arranged side walls and a pair of opposing end walls, these walls collectively defining filament passageway. In accordance with one embodiment of the invention, a flow of fluid is injected along the walls of the diffuser in the direction of filament travel. More particularly, fluid is injected along both the opposing divergingly arranged walls and the opposing ends walls which form the diffuser. In another aspect of the present invention, the filaments are electrostatically charged and a like electrical charge is imparted to the walls of the diffuser. By independently controlling the electrical potential applied to the respective walls of the diffuser, the path of travel of the filaments through the diffuser can be affected in ways which improve the filament distribution and web formation.
摘要翻译：纺粘非织造织物使用包括具有多个用于挤出长丝的孔的纺丝板的设备来生产; 用于接收和衰减细丝的衰减器; 以及收集表面，其上沉积细丝以形成非织造纤维网。长丝行进路径中的长丝扩散器位于衰减器和收集表面之间。漫射器包括一对相对的发散布置的侧壁和一对相对的端壁，这些壁共同限定灯丝通道。根据本发明的一个实施例，沿着长丝行进的方向沿扩散器的壁注入流体流。更具体地，流体沿着形成扩散器的相对的发散布置的壁和相对的端壁两者被注入。在本发明的另一方面，细丝被静电充电，并且类似的电荷被施加到扩散器的壁。通过独立地控制施加到扩散器的各个壁的电位，细丝通过扩散器的行进路径可以受到改善丝分布和卷材形成的方式的影响。

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