Near atmospheric pressure treatment of polymers using helium discharges
US5767469A · kind A · utility
4Cited by
48References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Apr 19, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S422/907
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention is a method and apparatus for treating a polyester support such as polyethylene napthalate or polyethylene terephthalate. The treatment is carried out at near atmospheric pressure in a gas of helium and nitrogen or oxygen. The treatment uses anodized aluminum electrodes and an atmospheric glow discharge results when the electrodes are connected to an RF generator and spaced about 2 mm apart. The process and apparatus improve adhesion of subsequently coated emulsions on the polyester support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.