Process for producing electrostatic clad conduit innerduct liner
US5681623A · kind A · utility
8Cited by
5References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 27, 1995 |
| Grant date | Oct 28, 1997 |
| Priority date | — |
| Expiry date | Jan 27, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D1/045
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An electrostatically clad conduit innerduct liner and method for making the innerduct are disclosed, The process includes, heating the innerduct to a temperature less than melting point of the innerduct or a powder to be coated on the inner surface of the innderduct, The powder to be coated is electrically charged and applied to the innerduct by spraying from a nozzle having a different polarity than the innerduct to provide a substantially uniform coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.