Method and device for surface treatment of film webs
US4615906A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1985 |
| Grant date | Oct 7, 1986 |
| Priority date | — |
| Expiry date | Apr 24, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C59/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for surface treatment of a substrate made of thermoplastic plastic is described, wherein the substrate is guided into the zone of a corona discharge flowing between two electrodes charged with high electrical voltage. The characterizing feature of the method comprises subjecting at least one surface of the substrate, simultaneously with corona treatment, to reactive ionized substances from the the liquid phase in the corona discharge zone. In addition, a device for working the method recited hereinabove is described, comprising a support surface and a high-voltage electrode, said electrode being connected to a high-voltage generator via a high-voltage cable. The characterizing features of the device comprise the high-voltage electrode being a shaped electrode open toward the supporting surface, which is filled with a liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.