Atmospheric pressure glow discharge treatment of polymeric supports to promote adhesion for photographic applications
US5714308A · kind A · utility
7Cited by
26References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1996 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Feb 13, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/162
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention is a method for treating a polyester support such as polyethylene naphthalate or polyethylene terephthalate. The treatment is carried out at near atmospheric pressure in a gas of helium and optionally nitrogen and/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 at high speeds and relatively low power by selecting a frequency of 40 kHz to 500 kHz.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.