Method of impregnating a cable

Details Method of impregnating a cable Method of impregnating a cable

1979-02-22

1983-02-22

Lusignan, Michael R.

Coating processes

Electrical product produced

Wire conductor

4274342, 4274344, 4274345, 4274346, 4274347, 427435, 427443, B05D 512

Patent

active

043748708

ABSTRACT:
A method of impregnating a cable with a water impenetrable and water repellent sealing material comprising passing the cable axially through a pipe having open ends such that the pipe and cable form an annular gap along the length of the pipe. The gap is relatively thin compared to the diameter of the cable. A heated flowable sealing material is injected under pressure into the gap at an intermediate position between the open ends of the pipe so that the sealing material will flow inwardly into the cable during passage thereof through the pipe while the excess material travels axially along the cable in the gap and freely flows axially outwards from the ends of the pipe for collection and recirculation. The solidified filling material forms a solid barrier protecting the cable against penetration of water.

REFERENCES:
patent: 2390823 (1945-12-01), Bennett
patent: 3854444 (1974-12-01), Franke et al.

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