Water resistant communications cable

Details Water resistant communications cable Water resistant communications cable

1989-07-12

1992-01-21

Cannon, James C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Weight per unit area specified

174 23C, 428220, 428283, 428290, 428296, 385102, 385107, B32B 2714, B32B 2720, G02B 644, H02G 304

Patent

active

050827197

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 & Cable Symposium 1983.
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