Cables with water-blocking and flame-retarding tapes
    1.
    发明授权
    Cables with water-blocking and flame-retarding tapes 有权
    带阻水和阻燃胶带的电缆

    公开(公告)号:US06173100B2

    公开(公告)日:2001-01-09

    申请号:US09258533

    申请日:1999-02-26

    IPC分类号: G02B644

    摘要: A preferred embodiment of the cable of the present invention incorporates a core, an outer jacket surrounding the core, and a tape disposed between the core and the outer jacket. The tape includes a first layer and superabsorbent polymers (SAPs) which are applied to the first layer. Preferably, the first layer is formed of spun bonded non-woven polyester material, nylon spun bonded fabric, non-woven glass, polypropylene melt blown non-woven fabric, polyurethane spun bonded fabric, or TCF cellulose fabric, among others. Additionally, the SAPs preferably are provided with a moisture content of greater than approximately 2 percent, by weight, thereby improving the flame-retarding characteristics of the tape.

    摘要翻译: 本发明的电缆的优选实施例包括芯,围绕芯的外护套和设置在芯和外护套之间的带。 胶带包括施加到第一层的第一层和超吸收性聚合物(SAP)。 优选地,第一层由纺粘非织造聚酯材料,尼龙纺粘织物,无纺布玻璃,聚丙烯熔喷无纺布,聚氨酯纺粘织物或TCF纤维素织物等组成。 此外,SAP优选地具有大于约2重量%的水分含量,从而提高带的阻燃特性。

    Dry core optical fiber cables for premises applications and methods of manufacture
    2.
    发明授权
    Dry core optical fiber cables for premises applications and methods of manufacture 失效
    用于场所应用的干芯光纤电缆和制造方法

    公开(公告)号:US06205277B1

    公开(公告)日:2001-03-20

    申请号:US09253412

    申请日:1999-02-19

    IPC分类号: G02B644

    摘要: A preferred embodiment of the dry core optical fiber cable of the present invention incorporates a plurality of sub-units with each of said sub-units being arranged adjacent another of the sub-units so that the plurality of sub-units define an outer periphery. Preferably, each of the sub-units includes a plurality of optical fibers, a yarn layer and a sub-unit jacket, with each of the optical fibers being arranged adjacent another of the optical fibers. The sub-unit jacket surrounds the optical fibers, with the yarn layer being disposed between the optical fibers and the sub-unit jacket. An outer jacket surrounds the plurality of sub-units, with water-blocking tape being disposed between the outer jacket and the outer periphery of the sub-units. A method of manufacture of the cable also is provided.

    摘要翻译: 本发明的干芯光纤电缆的优选实施例包括多个子单元,其中每个子单元被布置成与另一个子单元相邻,使得多个子单元限定外周。 优选地,每个子单元包括多个光纤,纱线层和子单元护套,每个光纤被布置成与另一个光纤相邻。 子单元护套围绕光纤,纱线层设置在光纤和子单元护套之间。 外护套围绕多个子单元,其中防水带设置在外护套和子单元的外周之间。 还提供了一种制造电缆的方法。

    System for the reverse oscillating lay (ROL) consistency during the optical fiber cable manufacturing process
    3.
    发明授权
    System for the reverse oscillating lay (ROL) consistency during the optical fiber cable manufacturing process 有权
    光纤电缆制造过程中的反向摆幅(ROL)一致性系统

    公开(公告)号:US06546712B2

    公开(公告)日:2003-04-15

    申请号:US09834021

    申请日:2001-04-12

    IPC分类号: B29F310

    CPC分类号: G02B6/449

    摘要: A method, apparatus and system for improving reverse oscillating lay (ROL) consistency during an optical cable manufacturing process. A torque capstan receives an optical fiber cable from an ROL machine that places reverse-oscillating lay on the core of an optical cable, but also generates some undesirable fluctuating back-tension in a direction opposite a direction in which the optical fiber cable is being pulled during manufacturing of the optical cable. The optical cable comprises a plurality of subunit cables. A drive system coupled to the torque capstan is controlled by a control system in such a way that the torque capstan applies a certain amount of force to the optical cable in a direction substantially parallel to the direction in which the optical cable is being pulled during manufacturing. The certain amount of force applied to the optical fiber cable reduces undesirable fluctuating back-tension placed on the optical cable during the manufacturing process, thereby improving reverse oscillating lay (ROL) consistency, which improves the quality of the manufactured optical cables.

    摘要翻译: 一种用于在光缆制造过程中改善反向摆幅(ROL)一致性的方法,装置和系统。 扭矩绞盘从ROL机器接收光纤电缆,其将反向振荡放置在光缆的芯上,而且在与光缆被拉动的方向相反的方向上产生一些不期望的波动背张力 在制造光缆期间。 光缆包括多个子单元电缆。 耦合到扭矩绞盘的驱动系统由控制系统控制,使得扭矩绞盘在制造期间沿基本上平行于光缆被拉动的方向的光缆施加一定量的力 。 施加到光纤电缆的一定量的力在制造过程中减少了放置在光缆上的不期望的波动的反向张力,从而改善了反向振荡铺叠(ROL)的一致性,这提高了制造的光缆的质量。

    Dry core indoor/outdoor fiber optic cable
    4.
    发明授权
    Dry core indoor/outdoor fiber optic cable 有权
    干心室内/室外光缆

    公开(公告)号:US06681071B2

    公开(公告)日:2004-01-20

    申请号:US10146830

    申请日:2002-05-15

    IPC分类号: G02B644

    CPC分类号: G02B6/4413 G02B6/4494

    摘要: An indoor/outdoor dry core fiber optic cable or sub-unit that incorporates a plurality of optical fibers surrounded by a buffer material wound helically or in reverse-oscillated lay about a water blocking central strength member at a first tension and a first lay length and a water blocking strength member layer wound helically or in reverse-oscillated lay about the optical fibers at a second tension and a second lay length such that the combination of the buffer material, first tension, first lay length, second tension and second lay length result in an indoor/outdoor dry core optical cable capable of meeting ICEA-696 standards.

    摘要翻译: 一种室内/室外干芯光纤电缆或子单元,其包含由缓冲材料围绕的多个光纤,所述缓冲材料由螺旋形或反向振荡地缠绕在第一张力和第一敷设长度的水阻挡中心强度构件上, 在第二张力和第二敷设长度上螺旋地或反向摆动地缠绕在光纤上的防水强度构件层,使得缓冲材料的组合,第一张力,第一布置长度,第二张力和第二布置长度结果 在符合ICEA-696标准的室内/室外干芯光缆中。

    Communication cable having a core wrap binder which provides
water-blocking and strength properties
    6.
    发明授权
    Communication cable having a core wrap binder which provides water-blocking and strength properties 失效
    具有提供水封闭和强度特性的芯线封套的通信电缆

    公开(公告)号:US5249248A

    公开(公告)日:1993-09-28

    申请号:US799491

    申请日:1991-11-27

    IPC分类号: H01B7/282 H01B7/288 H01B11/00

    CPC分类号: H01B7/288

    摘要: A communication cable (20) includes a core (22) comprising a plurality of transmission media having a relatively supple layer (26) of a plastic material wrapped thereabout. Disposed about the layer of plastic material and in engagement therewith is a relatively rigid inner plastic jacket (28). Disposed about the inner jacket are additional components of a sheath system such as metallic shields and one or more additional plastic jackets. Interposed between the relatively supple layer of plastic material and the jacket is a water-blocking system which comprises two elongated strand materials (42, 44) such as yarns. The two elongated strand materials are wrapped helically about the layer of plastic material in opposite helical directions. The elongated strand materials are characterized by being yarn blends which comprise a portion of water-blocking filaments and a portion of relatively high strength filaments. The elongated strand materials are effective to intercept water which may travel along the cable between the relatively supple layer of plastic material and the jacket which is contiguous hereto. In addition, the relatively high tensile strength of the strand materials provides additional physical support to maintain the supple plastic material tightly around the transmission media.