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US 12,518,893 B2Granted
Power or data transmission cable with metallic water barrier and process for manufacturing such a cable
AssigneePrysmian S.p.A.
InventorsMarina Gandini, Enrico Maria Consonni, Giovanni Pozzati, Massimo Tawfilas
Life of this patent
Estimating the term…
Abstract
A transmission cable includes a cable core extending along a longitudinal direction; a water barrier in form of a metallic foil folded around the cable core along the longitudinal direction with overlapped edges. The overlapped edges is bonded to one another by a bonding layer made of an inorganic material.
Claims19
A power or data transmission cable comprising:
- a cable core extending along a longitudinal direction;
- and
- a water barrier in form of a metallic foil folded around the cable core along the longitudinal direction with overlapped edges, the water barrier being made of copper or an alloy thereof, the copper or the alloy thereof being a high purity copper with a copper content greater than 90%, the overlapped edges being bonded to one another by a bonding layer made of substantially the same metal of the water barrier, the bonding layer being disposed between the overlapped edges of the metallic foil.
A process for manufacturing a power or data transmission cable comprising:
- providing a transmission cable core extending along a longitudinal direction;
- providing a metallic foil made of a metal having a melting temperature, the metallic foil comprising two longitudinal edges;
- folding the metallic foil around the transmission cable core along the longitudinal direction;
- applying a solder paste on at least one of the two longitudinal edges, the solder paste having a sintering temperature lower than the melting temperature of the metal of the metallic foil, and the solder paste having a viscosity between 10,000 and 100,000 Cps at room temperature;
- overlapping the two longitudinal edges of the metal foil so as to bring them in contact via the solder paste;
- and
- heating at least the overlapped longitudinal edges up to the sintering temperature of the solder paste to form a bonding layer binding the longitudinal edges and yielding a water barrier.
4 more elements
A process for manufacturing a power or data transmission cable comprising:
- providing a transmission cable core extending along a longitudinal direction;
- providing a metallic foil made of a metal having a melting temperature, the metallic foil comprising two longitudinal edges and being made of copper;
- folding the metallic foil around the transmission cable core along the longitudinal direction;
- applying a solder paste on at least one of the two longitudinal edges, the solder paste having a sintering temperature lower than the melting temperature of the metal of the metallic foil and being made of copper or an alloy thereof, and the solder paste having a viscosity between 10,000 and 100,000 Cps at room temperature;
- overlapping the two longitudinal edges of the metal foil so as to bring them in contact via the solder paste;
- and
- heating at least the overlapped longitudinal edges up to the sintering temperature of the solder paste to form a bonding layer binding the longitudinal edges and yielding a water barrier.
4 more elements
Dependencies are inferred from the claim text.