Electric cable with stranded conductor filled with water blocking compound and with extruded insulation
First Claim
1. 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°
- 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
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Accused Products
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° 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.
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Citations
12 Claims
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1. 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°
- 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
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. 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°
- 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.
- View Dependent Claims (10, 11, 12)
Specification