发明名称 |
Spacer for optical fiber cable and optical fiber cable using the spacer |
摘要 |
A polyethylene spacer for optical fiber cable including a central tensile member, an intermediate coating layer arranged on an outer periphery of the central tensile member and being compatible with polyethylene and a main coating arranged on an outer periphery of the intermediate coating layer and having continuous spiral grooves for accommodating optical fibers and which are inverted periodically in a lengthwise direction. The main coating is formed from polyethylene resin. The spacer includes ribs defining the spiral grooves. A minimum thickness of the ribs is 1.0 mm or less, the groove inclination angle alpha of a cross section of the spacer at inversion part is 18° or less. A resin density of a root part of each rib is the lowest in comparison to a resin density at a tip part of the rib and central parts of the rib between the root part and the tip part.
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申请公布号 |
US6795625(B1) |
申请公布日期 |
2004.09.21 |
申请号 |
US20010762362 |
申请日期 |
2001.02.05 |
申请人 |
UBE-NITTO KASEI CO., LTD. |
发明人 |
ISHII TOKU;WATANABE KAZUNORI;ITO KENJI |
分类号 |
G02B6/44;(IPC1-7):G02B6/44 |
主分类号 |
G02B6/44 |
代理机构 |
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地址 |
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