公开(公告)号：US4399084A

公开(公告)日：1983-08-16

申请号：US293269

申请日：1981-08-17

申请人： Yasuhiko Sagawa ,  Susumu Norota ,  Tsutomu Kiriyama ,  Shingo Emi ,  Tadasi Imoto ,  Tetsuo Yamauchi

发明人： Yasuhiko Sagawa ,  Susumu Norota ,  Tsutomu Kiriyama ,  Shingo Emi ,  Tadasi Imoto ,  Tetsuo Yamauchi

IPC分类号： D01D4/02 ,  D01D5/088 ,  D01D5/20 ,  D01F6/60 ,  H05B1/00

CPC分类号： D01D5/20 ,  D01D4/02 ,  D01D5/088 ,  D01F6/605

摘要： The present invention provides a process for producing a fibrous assembly, which comprises extruding a melt of a fiber-forming polymer through a mesh spinneret, said spinneret including many closely arranged small openings and having an opening ratio (.alpha.), represented by the following formula, of at least about 10% ##EQU1## V.sub.a is the total apparent volume of the spinneret which is taken within a unit area of its mesh portion, and V.sub.f is the total volume of partitioning members defining the small openings which is taken within a unit area of the mesh portion of the spinneret; said extrusion being carried out while generating Joule heat in the partitioning members of the spinneret and cooling the vicinity of the extrusion surface of the spinneret by supplying a cooling fluid, whereby the melt is stably converted into fine streams by the partitioning members; and taking up and solidifying the fine streams; and also provides the process wherein the extrusion surface of the spinneret is turned upward so that the normal vector of the extruding surface is reverse to the direction of gravity, and the fine streams extruded from the extrusion surface are taken up against gravity.The present invention provides a molding apparatus for production of a fibrous assembly having a mesh spinneret which has many closely arranged small openings having an opening ratio .alpha. defined by the above formula of at least 10% and the extrusion surface of the spinneret being turned upwardly such that the normal vector of the extrusion surface is reverse to the direction of gravity.

摘要翻译： 本发明提供一种纤维集合体的制造方法，该方法包括通过网眼喷丝头挤出成纤聚合物的熔体，所述喷丝头包括许多紧密排列的小孔，并具有开口率（α），由下式 ，至少约10％，是在其网眼部分的单位面积内拍摄的喷丝头的总表观体积，Vf是限定在单位内的小开口的分隔构件的总体积 喷丝板网部分的面积; 所述挤出是在喷丝板的分隔件中产生焦耳热并且通过供应冷却流体冷却喷丝板的挤压表面附近而进行的，从而通过分隔件稳定地将熔体转化成细流; 捡起和凝固细流; 并且还提供了其中喷丝板的挤出表面向上转动使得挤出表面的法向矢量与重力方向相反的过程，并且从挤压表面挤出的细流被克服重力。 本发明提供了一种用于生产具有网眼喷丝头的纤维组件的模制设备，其具有许多紧密排列的小开口，其具有由上述公式定义的至少10％的开口比α，并且喷丝头的挤出表面向上转动， 挤压表面的法向量与重力方向相反。