US 11,791,065 B2
Multi-layer radial water barrier for rapid manufacture
Audun Johanson, Oslo (NO); and Robin Sangar, Drobak (NO)
Assigned to NEXANS, Courbevoie (FR)
Filed by NEXANS, Courbevoie (FR)
Filed on Sep. 17, 2021, as Appl. No. 17/478,396.
Claims priority of application No. 20306060 (EP), filed on Sep. 18, 2020.
Prior Publication US 2022/0115165 A1, Apr. 14, 2022
Int. Cl. H01B 9/02 (2006.01); H01B 7/02 (2006.01); H01B 7/29 (2006.01); H01B 13/00 (2006.01); H01B 13/26 (2006.01)
CPC H01B 9/023 (2013.01) [H01B 7/02 (2013.01); H01B 7/292 (2013.01); H01B 13/0016 (2013.01); H01B 13/26 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A power cable comprising:
a cable core comprising at least one conductor with an insulating system;
a water barrier surrounding the cable core,
wherein the water barrier comprises a helically wound strength bearing layer with overlapping regions interconnected by a material with a lower melting point than the strength bearing layer,
wherein the water barrier is composed of a multilayered tape comprising at least one layer of a low-melting point material and a strength bearing layer, and
wherein the at least one of the layers of the multilayered tape having a low melting point, has a melting point in the range of 180-525° C., and wherein at least one layer is a strength bearing layer being a high melting point metal with a melting point above the low melting point material, and
wherein said overlapping regions of said water barrier are portions of said at least one of the layers of the multilayered tape with a low melting point re-melted to each other.