Method of removing air bubbles in a coating path before feeding a coating liquid
US5096602A · kind A · utility
9Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1990 |
| Grant date | Mar 17, 1992 |
| Priority date | — |
| Expiry date | Dec 31, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2001/744
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of feeding a coating liquid into a path from a tank to a coating apparatus through a filter and a degassing apparatus by a pump, comprising the steps of preparing a cleaning liquid containing degassed warm water in advance and aqueous solution of low surface tension; pouring the cleaning liquid into the path through the filter by the pump to dissolve bubbles contained in the filter into the cleaning liquid; exhausting the cleaning liquid from the path; filling the path as far as the coating apparatus with the new cleaning liquid anew; and substituting a coating liquid for the cleaning liquid sequentially.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.