发明名称 |
LONGITUDINALLY WATER-BLOCKED CABLE, ESPECIALLY COMMUNICATION CABLE |
摘要 |
Longitudinally water-tight cables, such as communication cables, are produced so that the interior of such cables contain a filling material which includes a water-repelling substance and relatively small diameter gas bubbles substantially uniformly embedded therein. The filling material contains an admixture of thermoplastic rubbers or rubber-like thermoplastic materials which are molten at the processing temperature utilized in the course of cable filling and which soldify at the normal operating temperature range of a cable by linking, hooking or coupling via thermoplastic blocks having a correspondingly low melting range, that is lying just below the cable filling temperature. The gas bubbles, which are generated during cable filling, are maintained at their respective spatial positions within the filling material by a rubber-like network which forms in the filling material and the linking or joining points in such network can withstand the buoyancy forces of the gas bubbles without rupture. |
申请公布号 |
EP0039867(A3) |
申请公布日期 |
1981.12.23 |
申请号 |
EP19810103352 |
申请日期 |
1981.05.04 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT BERLIN UND MUNCHEN |
发明人 |
ZEIDLER, GUNTER, DR. DIPL.-ING.;LANGE, GERHARD, DIPL.-CHEM.;SALLER, HELMUT |
分类号 |
H01B7/282;(IPC1-7):01B7/28;01B13/22 |
主分类号 |
H01B7/282 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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