Electric cable with stranded conductor filled with water blocking compound and with extruded insulation
AssigneeSocieta' Cavi Pirelli S.p.A.
InventorsCarlo Marin, Giovanni Pozzati
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Abstract
A filler compound for the spaces between the wires of a stranded conductor surrounded by and contacting a semiconductive layer which is surrounded by a layer of extrudced insulation, a method for filling such spaces with the compounds and an electric cable including such compound. The compound has a polymeric base, a Mooney viscosity at 100.degree. C. between 10 and 60 and a Shore A hardness between 10 and 90. Preferably, the compound includes hygroexpansible, water insoluble organic powder having particle sizes less than 200 microns and specified other characteristics.
Claims12
In an electric cable comprising at least one conductor surrounded by a semiconductor layer contacting said conductor and a layer of extruded insulation surrounding said semiconductive layer, said conductor comprising a plurality of metal wires laid-up together, and a polymeric filler compound filling any otherwise empty spaces between said wires, wherein the improvement is that said polymeric filler compound is a compound which, as compounded, is extrudable and has a Monney viscosity at 100.degree. C. in the range from about 10 to about 60 and a Shore A hardness at room temperature in the range from about 10 to about 90 whereby said spaces are filled with a solid and hard compound extruded between said wires
Electrical conductor comprising a plurality of metal wires laid up together and a polymeric filler compound filling an otherwise empty space between said wires, wherein the improvement is that said polymeric filler compound a compound which, as compounded, is extrudable and has a Mooney viscosity at 100.degree. C. in the range from about 10 to 60 and a Shore A hardness at room temperature in the range from 10 to about 90 whereby said spaces are filled with a solid and hard compound extruded between said wires.
Dependencies are inferred from the claim text.