-
公开(公告)号：EP0750691B1
公开(公告)日：1999-11-24
申请号：EP95912916.4
申请日：1995-03-14
发明人： PRICE, David, Arthur , BENNETT, James, Preston , KNOX, Benjamin, Hughes , SCHAFLUETZEL, Dennis, Raymond
CPC分类号： D02J1/08 , D01D5/24 , D01F6/60 , D02J1/22 , Y10T428/2935 , Y10T428/2973 , Y10T428/2975 , Y10T442/131 , Y10T442/3106
-
公开(公告)号：EP0750691A1
公开(公告)日：1997-01-02
申请号：EP95912916.0
申请日：1995-03-14
发明人： PRICE, David, Arthur , BENNETT, James, Preston , KNOX, Benjamin, Hughes , SCHAFLUETZEL, Dennis, Raymond
CPC分类号： D02J1/08 , D01D5/24 , D01F6/60 , D02J1/22 , Y10T428/2935 , Y10T428/2973 , Y10T428/2975 , Y10T442/131 , Y10T442/3106
摘要： A melt spinning process and the nylon hollow filaments and yarns made by such process which includes extruding molten nylon polymer having a relative viscosity (RV) of at least about 50 and a melting point (TM) of about 210 °C to about 310 °C from a spinneret capillary orifice with multiple orifice segments providing a total extrusion area (EA) and an extrusion void area (EVA) such that the fractional extrusion void content, defined by the ratio [EVA/EA] is about 0.6 to about 0.95, and the extent of melt attenuation, defined by the ratio [EVA/(dpf)S], is about 0.05 to about 1.5, in which (dpf)S is the spun denier per filament, the (dpf)S being selected such that the denier per filament at 25 % elongation (dpf)25 is about 0.5 to about 20 denier; withdrawing the multiple melt streams from the spinneret into a quench zone under conditions which cause substantially continuous self-coalescence of the multiple melt streams into spun filaments having at least one longitudinal void and a residual draw ratio (RDR) of less than 2.75; and stabilizing the spun hollow filaments to provide hollow filaments with a residual draw ratio (RDR) of about 1.2 to about 2.25.
-
搜索结果
2 条记录 (耗时 0.013 秒)
