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    • 3. 发明授权
    • Fiber optic cable having water blocking and flame retardant properties
    • 具有阻水性和阻燃性能的光纤电缆
    • US06501887B1
    • 2002-12-31
    • US09651787
    • 2000-08-30
    • Anne G. BringuierJimmy B. DameronSamuel D. Nave
    • Anne G. BringuierJimmy B. DameronSamuel D. Nave
    • G02B644
    • G02B6/4494G02B6/4436
    • A fiber optic cable having both water blocking and flame retardant properties that is particularly useful for indoor or indoor/outdoor applications. In one embodiment, the fiber optic cable includes at least one buffer tube, at least one optical fiber disposed within the buffer tube, a composite tape surrounding the buffer tube that comprises a layer formed of an inherently flame retardant material and at least one coating a water swellable material, and a jacket surrounding the composite tape. The fiber optic cable can also include a water blocking element disposed within the buffer tube. The water swellable coatings of the composite tape and the water blocking element within the buffer tube therefore inhibit water migration along the length of the cable, while the flame retardant layer of the composite tape provides fire resistance. In another aspect, a dry fiber optic cable that includes a buffer tube comprised of an inherently flame retardant material, at least one optical fiber disposed within the buffer tube, a first tape comprised of a water swellable material that at least partially surrounds the at least one optical fiber, at least one roving extending lengthwise along the buffer tube and having a coating comprised of a water swellable material, and a jacket surrounding the buffer tube and the at least one roving. As such, the buffer tube provides flame retardant properties, while the first tape and the water swellable coating of the at least one roving inhibit water migration along the length of the cable.
    • 一种具有阻水性和阻燃性的光缆,其特别适用于室内/室外应用。 在一个实施例中,光纤电缆包括至少一个缓冲管,设置在缓冲管内的至少一个光纤,围绕缓冲管的复合带,其包括由固有阻燃材料形成的层和至少一个涂层 水可膨胀材料和围绕复合带的护套。 光纤电缆还可以包括设置在缓冲管内的阻水元件。 因此,缓冲管内的复合胶带和阻水元件的水可溶胀涂层因此阻止沿电缆长度的水迁移,而复合胶带的阻燃层提供耐火性。 另一方面,一种干式光缆,其包括由固有阻燃材料构成的缓冲管,设置在该缓冲管内的至少一根光纤,由至少部分地围绕该至少一部分的水可溶胀材料构成的第一条带 一个光纤,至少一条沿着缓冲管纵向延伸的粗纱,并具有由水溶胀材料构成的涂层,以及围绕缓冲管和至少一条粗纱的护套。 因此,缓冲管提供阻燃性能,而至少一种粗纱的第一带和水可溶胀涂层抑制沿电缆长度的水迁移。
    • 4. 发明授权
    • Plenum rated fiber optic cables
    • 全光纤光缆
    • US6167178A
    • 2000-12-26
    • US161924
    • 1998-09-28
    • Samuel D. Nave
    • Samuel D. Nave
    • G02B6/44
    • G02B6/4436G02B6/441G02B6/4434
    • A fiber optic cable suitable for use in plenum applications comprising at least one optical fiber having a buffer layer formed of a flame retarded polyolefin material, a layer of strength members, and a cable jacket surrounding the optical fiber and in contact with at least some of the strength members. The flame retarded polyolefin can be selected from the group consisting of a flame retarded polyethylene, a flame retarded polypropylene, and blends thereof. Cables made according to the present invention are suitable for use in plenums of buildings, and are designed to meet mechanical and environmental requirements.
    • 一种适用于增压室应用的光纤电缆,包括至少一根光纤,该光纤具有由阻燃聚烯烃材料形成的缓冲层,强化部件层,以及围绕光纤并与至少一些 力量成员。 阻燃聚烯烃可以选自阻燃聚乙烯,阻燃聚丙烯及其共混物。 根据本发明制造的电缆适用于建筑物的通风室,并且被设计成满足机械和环境要求。