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    • 4. 发明授权
    • Conductive sheath-core conjugate fiber and process for producing the same
    • 导电皮芯复合纤维及其制造方法
    • US07824769B2
    • 2010-11-02
    • US12307147
    • 2007-06-21
    • Hitoshi NakatsukaTadayoshi KoizumiKazuhiko TanakaNobuhiro KogaMasao KawamotoKenichi Yoshioka
    • Hitoshi NakatsukaTadayoshi KoizumiKazuhiko TanakaNobuhiro KogaMasao KawamotoKenichi Yoshioka
    • D02G3/00
    • D01F8/04D01F1/09D01F8/12D01F8/14Y10T428/2924Y10T428/2929Y10T428/2931Y10T442/3154
    • In an electrically conductive sheath-core conjugate fiber including an electrically conductive layer made of a thermoplastic polymer (A) containing electrically conductive carbon black fine particles which constitutes a sheath component and a protective layer made of a fiber-forming thermoplastic polymer (B) which constitutes a core component, the ratio of the (A) to the total weight of the (A) and the (B) is 10 to 35% by weight, the L1/L0 ratio is 1.04 to 10.0 where L1 represents the length of a boundary between the core component and the sheath component in a cross section of the conjugate fiber and L0 represents the length of the circumference of a circle having an area equal to a cross sectional area of the core component, the fineness, the strength at break and the elongation at break are each adjusted within specified ranges, the shrinkage in hot water at 100° C. is within a specified range, and the fiber surface coverage of the sheath component is 85% or more. This results in provision of an electrically conductive sheath-core conjugate fiber that is excellent in antistatic performance, which is hardly degraded even after long-term wearing, that is maintained for a long time, and that is excellent in durability. A method for producing the electrically conductive sheath-core conjugate fiber and a dust-proof clothing using such a fiber are also provided.
    • 在包含导热层的导电皮芯复合纤维中,所述导电层由包含导电性炭黑细颗粒构成鞘组分的热塑性聚合物(A)和由成纤热塑性聚合物(B)制成的保护层制成, 构成核心成分时,(A)与(B)的总重量的比例为10〜35重量%,L1 / L0比为1.04〜10.0,其中L1表示a 复合纤维的横截面中的核心部件和鞘部分之间的边界,L0表示具有等于芯部件的横截面面积的面积的圆周长度,细度,断裂强度和 断裂伸长率均在规定范围内,100℃下的热水收缩率在规定范围内,护套成分的纤维表面覆盖率为85%以上。 这导致提供了一种导电性皮芯复合纤维,其抗静电性能优异,即使在长时间佩戴后也几乎不劣化,长时间保持,并且耐久性优异。 还提供了一种制备导电皮芯复合纤维的方法和使用这种纤维的防尘服。
    • 5. 发明申请
    • CONDUCTIVE SHEATH-CORE CONJUGATE FIBER AND PROCESS FOR PRODUCING THE SAME
    • 导电丝芯连接纤维及其制造方法
    • US20090318049A1
    • 2009-12-24
    • US12307147
    • 2007-06-21
    • Hitoshi NakatsukaTadayoshi KoizumiKazuhiko TanakaNobuhiro KogaMasao KawamotoKenichi Yoshioka
    • Hitoshi NakatsukaTadayoshi KoizumiKazuhiko TanakaNobuhiro KogaMasao KawamotoKenichi Yoshioka
    • D03D15/00D02G3/22D02J1/22
    • D01F8/04D01F1/09D01F8/12D01F8/14Y10T428/2924Y10T428/2929Y10T428/2931Y10T442/3154
    • In an electrically conductive sheath-core conjugate fiber including an electrically conductive layer made of a thermoplastic polymer (A) containing electrically conductive carbon black fine particles which constitutes a sheath component and a protective layer made of a fiber-forming thermoplastic polymer (B) which constitutes a core component, the ratio of the (A) to the total weight of the (A) and the (B) is 10 to 35% by weight, the L1/L0 ratio is 1.04 to 10.0 where L1 represents the length of a boundary between the core component and the sheath component in a cross section of the conjugate fiber and L0 represents the length of the circumference of a core component, the fineness, the strength at break and the elongation at break are each adjusted within specified ranges, the shrinkage in hot water at 100° C. is within a specified range, and the fiber surface coverage of the sheath component is 85% or more. This results in provision of an electrically conductive sheath-core conjugate fiber that is excellent in antistatic performance, which is hardly degraded even after long-term wearing, that is maintained for a long time, and that is excellent in durability. A method for producing the electrically conductive sheath-core conjugate fiber and a dust-proof clothing using such a fiber are also provided.
    • 在包含导热层的导电皮芯复合纤维中,所述导电层由包含导电性炭黑细颗粒构成鞘组分的热塑性聚合物(A)和由成纤热塑性聚合物(B)制成的保护层制成, 构成核心成分时,(A)与(B)的总重量的比例为10〜35重量%,L1 / L0比为1.04〜10.0,其中L1表示a 在复合纤维的横截面中,芯部件和护套部件之间的边界,L0表示核心部件,细度,断裂强度和断裂伸长率均调整在规定范围内, 在100℃的热水中收缩在规定的范围内, 护套组件的纤维表面覆盖率为85%以上。 这导致提供了一种导电性皮芯复合纤维,其抗静电性能优异,即使在长时间佩戴后也几乎不劣化,长时间保持,并且耐久性优异。 还提供了一种制备导电皮芯复合纤维的方法和使用这种纤维的防尘服。
    • 7. 发明授权
    • Composite fiber
    • 复合纤维
    • US06811874B2
    • 2004-11-02
    • US10344418
    • 2003-08-13
    • Kazuhiko TanakaMasao KawamotoHitoshi NakatsukaNobuhiro KogaIchirou InoueTateki Yamakawa
    • Kazuhiko TanakaMasao KawamotoHitoshi NakatsukaNobuhiro KogaIchirou InoueTateki Yamakawa
    • D01F800
    • D01F8/10Y10T428/2924Y10T428/2929Y10T428/2931
    • A core/sheath conjugate fiber comprises a sheath component B of an ethylene-vinyl alcohol copolymer and a core component A of a different thermoplastic polymer. In its cross section, the core component A has at least 10 projections or exists as an aligned group of at least 10 flattened cross-section core components, the distance (I) between the neighboring projections or between the neighboring flattened cross-section core components is at most 1.5 &mgr;m, the projections or the flattened cross-section core components are so positioned that their major axes are all at an angle of 90°±15° to the outer periphery of the fiber cross section, and the ratio (X) of the outer peripheral length (L2) of the core component A to the outer peripheral length (L1) of the conjugate fiber satisfies the following formula (1): X/C≧2  (1) wherein X indicates the ratio of the outer peripheral length of the core component A to the outer peripheral length of the conjugate fiber (L2/L1); and C indicates the conjugate ratio by mass of the core component A to the overall conjugate fiber defined as 1.
    • 芯/鞘复合纤维包含乙烯 - 乙烯醇共聚物的鞘组分B和不同热塑性聚合物的核心组分A. 在其横截面中,芯部件A具有至少10个突起或作为至少10个扁平横截面芯部件的对准组存在,相邻突出部之间的距离(I)或相邻的扁平横截面芯部件 至多1.5μm,突起或扁平的横截面芯部件被定位成使得其长轴全部与纤维横截面的外周成90°±15°的角度,并且比率(X) 核心成分A的外周长(L2)与复合纤维的外周长(L1)的比例满足下式(1):其中,X表示核成分A的外周长与 复合纤维的外周长(L2 / L1); C表示核心成分A与定义为1的总复合纤维的质量的共轭比。