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1. 发明授权

US4526735A Process for producing fibrous assembly 失效
标题翻译：纤维集合体的制造方法
公开(公告)号：US4526735A
公开(公告)日：1985-07-02
申请号：US465339
申请日：1983-02-09
申请人： Susumu Norota , Yasuhiko Segawa , Tsutomu Kiriyama , Shingo Emi , Tadasi Imoto , Tetsuo Yamauchi
发明人： Susumu Norota , Yasuhiko Segawa , Tsutomu Kiriyama , Shingo Emi , Tadasi Imoto , Tetsuo Yamauchi
IPC分类号： B29C47/12 , B29C47/86 , D01D4/02 , D01D5/08 , D01D13/00 , D01F1/02 , D01F6/60 , B29F3/08
CPC分类号： B29C47/86 , B29C47/0014 , B29C47/12 , B29C47/862 , B29C47/90 , B29C47/908 , D01D13/00 , D01D4/02 , D01D5/08 , D01F1/02 , D01F6/605 , B29C47/0016 , Y10S264/46
摘要： A process and apparatus for producing a fibrous assembly. At least one fiber-forming polymer is extruded through a spinneret having numerous small openings. The process uses a die equipped with a spinneret having numerous closely spaced small openings and an opening ratio (.alpha.) of at least 30%. At least one fiber-forming polymer in the form of a shaped mass having a specified compression resistance is continuously stuffed into said die. Said shaped mass has a shape such that it measures more in one direction than in another. There is passed through the spinneret an electric current sufficient to give said fiber-forming polymer Joule heat required for cutting said polymer by partitioning members defining the numerous small openings of the spinneret. The cut fiber-forming polymer is taken up as fine streams.The present invention provides ultrathick aromatic polyamide fibers having an average cross-sectional area of about 0.01 mm.sup.2 to about 5 mm.sup.2 and comprising at least one fiber-forming aromatic polyamide and an inorganic or metallic fine powder or a fibrous material.
摘要翻译：用于生产纤维集合体的方法和设备。至少一种纤维形成聚合物通过具有许多小孔的喷丝头挤出。该方法使用装备有具有多个紧密间隔的小开口的喷丝头的模具和至少30％的开口率（α）。将具有特定抗压性的成形块形式的至少一种纤维形成聚合物连续地填充到所述模具中。所述成形块具有使得其在一个方向上比另一个方向更多的形状。通过喷丝头使电流足以使所述纤维形成聚合物焦耳热通过限定喷丝头的许多小开口的分隔构件切割所述聚合物所需的热量。切割的纤维形成聚合物被吸收为细小的流。本发明提供平均横截面积为约0.01mm 2至约5mm 2的超薄芳族聚酰胺纤维，并且包含至少一种成纤芳香族聚酰胺和无机或金属细粉或纤维材料。

2. 发明授权

US4399084A Process for producing a fibrous assembly 失效
标题翻译：纤维集合体的制造方法
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。

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