Process for the production of highly expanded polyolefin insulated wires and cables
US4352701A · kind A · utility
25Cited by
10References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1980 |
| Grant date | Oct 5, 1982 |
| Priority date | — |
| Expiry date | Apr 25, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/101
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process for producing a highly expanded polyolefin insulated cable comprising the steps of feeding a compound of polyolefin, nucleating agent and volatile liquid to an extruder, heat extruding said compound through said extruder onto an inner conductor passing through said extruder to cover the outer periphery of said inner conductor thereby forming an insulation layer of highly expanded polyolefin foam having a foaming ratio in excess of 2.5 times (60% expansion degree) tightly adhered to said inner conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.