Roll electrode and device for pretreating the surfaces of film webs by means of electrical corona discharge
US4839517A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 1987 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Nov 30, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T19/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus to increase the adhesive properties of an electrode material embedded in a synthetic resin matrix of a conductive layer and also to improve the mechanical strength of the composite body comprising the synthetic resin matrix and the embedded electrode material, without giving rise to technical problems in the processing of the composite body into a roll electrode by a known winding process, is provided. Electrically conductive fibers are embedded in the electrically conductive layer and the roll electrode is formed of at least one electrically conductive layer of fiber-reinforced synthetic resins and at least one fiber-reinforced insulating layer of synthetic resins. Roll electrodes of this type are used as counter-electrodes in corona devices for treating the surfaces of film webs by means of an electrical corona discharge, in order to improve the printability of the film webs or to increase the bond strength of the film webs with other layer materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.