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公开(公告)号：US20040175567A1
公开(公告)日：2004-09-09
申请号：US10760863
申请日：2004-01-20
发明人： James Huang , Chin-Chun Chou , Chin-Cha Chou , Shia-Chung Chen , Wen-I Kuo , Lei-Ti Huang
IPC分类号： D02G003/00
CPC分类号： D01D5/423 , D01F6/12 , Y10T428/2913 , Y10T428/2965 , Y10T428/2973 , Y10T428/2976 , Y10T428/3154
摘要： A PTFE fiber with a low density and having a network structure that allows effective performances to be given to its finished articles and a method for manufacturing the PTFE fiber are provided. The PTFE fiber is a filament obtained by giving a heat treatment to a biaxially stretched polytetrafluoroethylene (PTFE) film, followed by slitting partially in a lengthwise direction of the film. The filament includes a network structured fiber in which single fibers are opened partially in the width direction, and the filament is an aggregate of the single fibers. This fiber is manufactured as the filament by feeding a biaxially stretched PTFE film to a revolving pin roll with needles implanted thereon, the needles being arranged so that a plurality of rows run obliquely along a circumferential direction at substantially regular intervals, and slitting the film partially in a lengthwise direction. This PTFE filament may be cut into short fibers with a cutter. The short fibers include a branch structure.
摘要翻译： 提供了一种具有低密度且具有能够对其成品赋予有效性能的网状结构的PTFE纤维和PTFE纤维的制造方法。 PTFE纤维是通过对双轴拉伸的聚四氟乙烯（PTFE）膜进行热处理而得到的长丝，随后在膜的长度方向上部分切割。 灯丝包括其中单个纤维在宽度方向上部分打开的网状结构纤维，并且灯丝是单纤维的聚集体。 该纤维通过将双轴拉伸的PTFE膜供给到植入了针的旋转销辊而被制造为长丝，针被布置成使得多个列以大致规则的间隔沿圆周方向倾斜地延伸，并且部分地切割膜 沿长度方向。 该PTFE丝可以用切割机切成短纤维。 短纤维包括分支结构。
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2.发明申请Polytetrafluoroethylene sheet or film, gasket tape produced therefrom and production method thereof 有权聚四氟乙烯片或薄膜，由其制成的垫片带及其制造方法公开(公告)号：US20030015821A1
公开(公告)日：2003-01-23
申请号：US09985385
申请日：2001-11-02
发明人： James Huang , William Chou , David Chou , Shia-Chung Chen , Woh-Jer Lee , Lei-Ti Huang , Ching-Yao Huang
IPC分类号： B27N003/08
CPC分类号： B29C55/005 , B29C47/0004 , B29C47/0021 , B29C47/124 , B29C55/18 , B29K2027/18 , B29K2105/0058 , B29K2105/256 , B29L2007/005 , B29L2031/265
摘要： To provide a method of producing a uniaxially stretched polytetrafluoroethylene gasket tape, which comprises: (1) a step for preparing a paste comprising a mixture of a polytetrafluoroethylene powder obtained by emulsion polymerization and an extrusion aid, (2) a step for extruding the paste by means of an extruder equipped with a die which has plural separators inside an orifice thereof having a rectangular cross section, (3) a step for rolling, in the extruding direction, an extrudate having slit lines to give a rolled polytetrafluoroethylene sheet, (4) a step for uniaxially stretching the rolled sheet in the rolling direction after removing the extrusion aid from the rolled sheet, and (5) a step for heat-treating the obtained uniaxially stretched polytetrafluoroethylene sheet. The die of the extruder has plural sheet-like separators in the orifice thereof having a rectangular cross section. The separators are mounted so that free ends thereof are located at a point exceeding a center point of a long side of the orifice, and function to provide slit lines inside the extrudate in parallel with the long side of the orifice. The high performance inexpensive PTFE gasket tape is produced by the uniaxially stretching method and has properties equal to those of biaxially stretched PTFE gasket tape.
摘要翻译： 提供一种单轴拉伸聚四氟乙烯垫片带的制造方法，其特征在于，包括：（1）制备包含通过乳液聚合获得的聚四氟乙烯粉末与挤出助剂的混合物的糊料的步骤，（2）挤出糊料的步骤 （3）在挤出方向上轧制具有切割线的挤出物以得到轧制的聚四氟乙烯片材的步骤（4），（4）在具有矩形横截面的孔中具有多个分离器的模具， ）从轧制板除去挤出助剂后，在轧制方向上单轴拉伸轧制板的工序，（5）对所得单轴拉伸聚四氟乙烯片进行热处理的工序。 挤出机的模具在其孔中具有多个片状隔离物，其截面为矩形。 分离器被安装成使得其自由端位于超过孔的长边的中心点的点上，并且用于在挤出物内部与孔的长边平行地提供切割线。 高性能廉价的PTFE垫片带通过单向拉伸法制造，具有与双轴拉伸PTFE垫片带的性能相同的性能。
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