High-efficiency plasma treatment of paper
US6603121B2 · kind B2 · utility
4Cited by
25References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 19, 2002 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Sep 19, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/915
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for treating paper web materials with a plasma, said apparatus comprising a dark space generated by a treatment electrode in a treatment zone. There is a counter electrode having a surface area in said treatment zone which is not greater than a surface area of said counter electrode. A power supply is included for driving either said treatment electrode or said counter electrode with an oscillating high voltage at a frequency less than about 2 MHz and greater than 1/tc where tc is the charging time of a web surface exposed to a rms ion current in the plasma.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.