Longitudinally water-tight cables and method of producing the sa

Details Longitudinally water-tight cables and method of producing the sa Longitudinally water-tight cables and method of producing the sa

1982-05-18

1983-06-14

Kendell, Lorraine T.

Stock material or miscellaneous articles

Composite

Of bituminous or tarry residue

428372, 156 48, 174 23C, 428383, 428398, 428376, B32B 2700, G02B 516, H02G 1520

Patent

active

043879586

ABSTRACT:
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.

REFERENCES:
patent: 1524124 (1925-01-01), Fisher et al.
patent: 3607487 (1971-09-01), Biskeborn
patent: 3733427 (1973-05-01), Clark et al.
patent: 3830953 (1974-08-01), Wood et al.
patent: 3856980 (1974-12-01), Puckowski et al.
patent: 3875323 (1975-04-01), Bopp et al.
patent: 3893961 (1975-07-01), Walton et al.

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