Process for manufacturing a cable resistant to external chemical agents
US8772638B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2009 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Jul 17, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B13/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Process for manufacturing a cable comprising the following steps:(a) conveying at least one conductor to an extruder apparatus;(b) extruding an insulating coating layer radially external to said at least one conductor; (c) longitudinally folding a metal tape around said extruded insulating coating layer, said metal tape bearing at least one adhesive coating layer in a radially external position; (e) extruding at least one continuous coating layer comprising at least one polyamide or a copolymer thereof around and in contact with said folded metal tape; wherein the step (e) is carried out at a draw down ratio (DDR) not higher than 2.5, preferably of from 1.2 to 2.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.