Water resistant communications cable

Details Water resistant communications cable Water resistant communications cable

1987-10-30

1989-09-19

Gonzalez, Frank

Electricity: conductors and insulators

Feedthrough or bushing

Compression

174 23C, G02B 644

Patent

active

048675261

ABSTRACT:
A communications cable comprising a core of at least one transmission medium and a plastic jacket includes provisions for preventing the movement of water within the cable. An impregnated tape (35) is interposed between the core and the jacket and is wrapped about the core to form a longitudinal overlapped seam. The tape comprises a substrate tape (37) which is impregnated with a superabsorbent material which upon contact with water swells and inhibits the further movement of the water. The tape and its thickness are controlled so that the thickness is minimal while the tensile strength of the tape and its porosity prior to impregnation are optimized.

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B. J. Nieuwhof, "Longitudinal Waterblocking Performance of Conductive and Non Conductive Waterswellable Nonwovens", International Wire and Cable Symposium, 1983.
B. J. Nieuwhof, "Conductive and Non Conductive Water Expandable Nonwoven Tapes for Longitudinal Water Blocking in Energy and Telcom Cables".
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Firet Brochure, "Problem Solutions for Industrial Applications Non-Woven Tapes for the Cable Industry".

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