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    • 2. 发明申请
    • Water-Blocked Optical Cable and Process for the Production Thereof
    • 水封式光缆及其生产工艺
    • US20080267569A1
    • 2008-10-30
    • US11666757
    • 2004-11-05
    • Alessandro GinocchioEnrico Consonnipaolo Arturo PresaMassimo PizzornoMauro Maritano
    • Alessandro GinocchioEnrico Consonnipaolo Arturo PresaMassimo PizzornoMauro Maritano
    • G02B6/44C03B37/028
    • G02B6/4494G02B6/441
    • An optical cable for communication includes at least one retaining element blocked with respect to the water propagation as well as a process for manufacturing such an optical cable. The optical cable includes, in addition to the retaining element, at least two transmission elements housed within the retaining element and a water swellable yarn housed within the retaining element. The water swellable yarn is selected according to the following equation: V w V TF = k V t + R ( 1 ) in which VW is the volume of the water swellable yarn after swelling upon contact with water; VTF is the total free volume in the retaining element; k is a constant ≧180; R is a constant ≧1.4; and Vt is the free volume per each transmission element. Advantageously, the optical cable is water-blocked and the water swellable yarn does not induce microbending effects on the transmission elements.
    • 用于通信的光缆包括至少一个相对于水传播阻挡的保持元件以及用于制造这种光缆的工艺。 除了保持元件之外,光缆还包括容纳在保持元件内的至少两个传输元件和容纳在保持元件内的水可溶胀纱线。 根据以下公式选择水可溶胀纱线: MFRAC> = k > + R 1 其中V 是水的体积 与水接触后膨胀的纱线; V TF是保持元件中的总自由体积; k是常数> = 180; R是常数> = 1.4; V T是每个传动元件的自由体积。 有利地,光缆被水封闭,并且水可溶胀纱线不会对传输元件引起微弯曲效应。
        • 8. 发明授权
        • Optical cable provide with a mechanically resistant covering
        • 光缆提供机械抵抗的覆盖物
        • US07302143B2
        • 2007-11-27
        • US10479484
        • 2002-05-28
        • Alessandro GinocchioAgusti Valls PratsEnrico Consonni
        • Alessandro GinocchioAgusti Valls PratsEnrico Consonni
        • G02B6/44
        • G02B6/443G02B6/441
        • An optical cable having at least one element for the transmission of optical signals and a structure that is able to protect the at least one element. The structure is a multilayer structure and is arranged in a position radially external to the at least one element and has a) at least one first covering layer of polymeric material in a position radially external to the at least one element; b) at least one covering layer of foamed polymeric material in a position radially external to the at least one first covering layer, and c) at least one second covering layer of polymeric material in a position radially external to the at least one covering layer of foamed polymeric material. The foamed polymeric material has a density between 0.3 and 0.7 kg/dm3 and tensile modulus at 20° C. between 300 and 700 MPa.
        • 一种具有用于传输光信号的至少一个元件和能够保护至少一个元件的结构的光缆。 该结构是多层结构,并且被布置在至少一个元件的径向外侧的位置中,并且具有:至少一个聚合材料的第一覆盖层,位于所述至少一个元件的径向外部的位置; b)在所述至少一个第一覆盖层的径向外侧的位置处的至少一层泡沫聚合材料的覆盖层,以及c)至少一个第二覆盖层,所述第二覆盖层位于所述至少一个第一覆盖层的至少一个覆盖层的径向外侧 发泡聚合材料。 发泡聚合物材料的密度在0.3和0.7kg / dm 3之间,在20℃和300-700MPa之间的拉伸模量。