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    • 4. 发明授权
    • Synthetic fiber nonwoven web and method
    • 合成纤维非织造纤维网及方法
    • US06469130B1
    • 2002-10-22
    • US09626014
    • 2000-07-26
    • Jian QinYong LiWendy Lynn Van DykeAnthony John WisneskiPalani Raj Ramaswami WallajapetHannong Rhim
    • Jian QinYong LiWendy Lynn Van DykeAnthony John WisneskiPalani Raj Ramaswami WallajapetHannong Rhim
    • C08G7310
    • D01F6/36D01D5/14D04H1/4334Y10T428/29Y10T428/2913Y10T428/2967Y10T428/2969Y10T442/183Y10T442/184Y10T442/20Y10T442/2025Y10T442/60Y10T442/607
    • A nonwoven web and method of preparing a novel nonwoven web of synthetic fiber are disclosed. An aqueous solution amide crosslinked synthetic precursor polymer is extruded under defined conditions through a plurality of die orifices to form a plurality of threadlines. The threadlines are attenuated with a defined primary gaseous source to form fiber under conditions of controlled macro scale turbulence and under conditions sufficient to permit the viscosity of each threadline, as it leaves a die orifice and for a distance of no more than about 8 cm, to increase incrementally with increasing distance from the die, while substantially maintaining uniformity of viscosity in the radial direction, at a rate sufficient to provide fiber having,the desired attenuation and mean fiber diameter without significant fiber breakage. The attenuated threadlines are dried with a defined secondary gaseous source. The resulting fibers are deposited randomly on a moving foraminous surface to form a substantially uniform web. The moving foraminous surface is positioned about 10 to about 100 cm from the last gaseous source to contact the threadlines. The fibers have a mean fiber diameter in the range of about 0.1 to 30 &mgr;m and are substantially free of shot. The attenuating and drying steps are carried out under conditions of controlled macro scale turbulence.
    • 公开了一种制备合成纤维的新的非织造纤维网的非织造纤维网和方法。 将水溶液酰胺交联的合成前体聚合物通过多个模孔在规定的条件下挤出以形成多条丝线。 在受控的大规模湍流的条件下和在足以允许每个丝线的粘度的条件下,当纱线离开模口并且距离不超过约8厘米的条件下,丝线用限定的主要气态源减弱以形成纤维, 随着距离模具的距离的增加而逐渐增加,同时基本上保持径向粘度的均匀性,其速率足以提供具有期望的衰减和平均纤维直径而没有显着纤维断裂的纤维。 衰减的丝线用限定的二次气源干燥。 所得纤维随机地沉积在移动的多孔表面上以形成基本均匀的网。 移动的多孔表面位于离最后气态源约10至约100厘米处以接触线。 纤维的平均纤维直径在约0.1至30μm的范围内,并且基本上没有喷射。 衰减和干燥步骤在受控的大规模湍流条件下进行。
    • 5. 发明授权
    • Synthetic fiber nonwoven web and method
    • 合成纤维非织造纤维网及方法
    • US06692825B2
    • 2004-02-17
    • US10091801
    • 2002-03-06
    • Jian QinYong LiWendy Lynn Van DykeAnthony John WisneskiPalani Raj Ramaswami WallajapetHannong Rhim
    • Jian QinYong LiWendy Lynn Van DykeAnthony John WisneskiPalani Raj Ramaswami WallajapetHannong Rhim
    • B32B300
    • D04H3/16D01D5/0985D01D5/14Y10T428/24612Y10T428/249921Y10T428/29Y10T428/2913Y10T428/2967Y10T428/2969Y10T428/31725Y10T442/183Y10T442/184Y10T442/20Y10T442/2025Y10T442/60Y10T442/607Y10T442/613Y10T442/622
    • A nonwoven web and method of preparing a novel nonwoven web of synthetic fiber are disclosed. An aqueous solution amide crosslinked synthetic precursor polymer is extruded under defined conditions through a plurality of die orifices to form a plurality of threadlines. The threadlines are attenuated with a defined primary gaseous source to form fiber under conditions of controlled macro scale turbulence and under conditions sufficient to permit the viscosity of each threadline, as it leaves a die orifice and for a distance of no more than about 8 cm, to increase incrementally with increasing distance from the die, while substantially maintaining uniformity of viscosity in the radial direction, at a rate sufficient to provide fiber having the desired attenuation and mean fiber diameter without significant fiber breakage. The attenuated threadlines are dried with a defined secondary gaseous source. The resulting fibers are deposited randomly on a moving foraminous surface to form a substantially uniform web. The moving foraminous surface is positioned about 10 to about 100 cm from the last gaseous source to contact the threadlines. The fibers have a mean fiber diameter in the range of about 0.1 to 30 &mgr;m and are substantially free of shot. The attenuating and drying steps are carried out under conditions of controlled macro scale turbulence.
    • 公开了一种制备合成纤维的新的非织造纤维网的非织造纤维网和方法。 将水溶液酰胺交联的合成前体聚合物通过多个模孔在规定的条件下挤出以形成多条丝线。 在受控的大规模湍流的条件下和在足以允许每个丝线的粘度的条件下,当纱线离开模口并且距离不超过约8厘米的条件下,丝线用限定的主要气态源减弱以形成纤维, 随着距离模具的距离的增加而逐渐增加,同时基本上保持径向粘度的均匀性,其速率足以提供具有期望的衰减和平均纤维直径的纤维而没有显着的纤维断裂。 衰减的丝线用限定的二次气源干燥。 所得纤维随机地沉积在移动的多孔表面上以形成基本均匀的网。 移动的多孔表面位于离最后气态源约10至约100厘米处以接触线。 纤维的平均纤维直径在约0.1至30μm的范围内,并且基本上没有喷射。 衰减和干燥步骤在受控的大规模湍流条件下进行。