Patent · US Expired

Device for the surface treatment of film webs by means of electrical corona discharge

US4239973A · kind A · utility

32Cited by

7References

19Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Andreas Kolbe · Berlin, DE
Peter Dinter · Obermoschel, DE

Key dates

Filing date	Nov 30, 1978
Grant date	Dec 16, 1980
Priority date	—
Expiry date	Nov 30, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S422/907
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Disclosed is a device for the surface treatment of film webs by means of an electrical corona discharge, comprising: at least one grounded counter-electrode comprised of a point electrode; at least one roll electrode rotatably positioned adjacent to said counter-electrode, the roll electrode comprising an outer tube comprised of dielectric material, an inner tube comprised of dielectric material fitted coaxially inside of the outer tube and a plurality of electrodes carried by the inner tube; and a supply of A.C. voltage for the electrodes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.