Method and apparatus for the high speed application of coating to a traveling paper web
US7022380B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 2, 2001 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Jan 24, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C9/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Method and apparatus for coating a traveling paper web includes a coater head. The coater head includes an inlet for receiving fresh coating material which is introduced into a mixing chamber. A looped flow path is established within the coater head which includes a feed channel extending from the mixing chamber and leading into a coating chamber where one portion of the coating material proceeds in the direction of the rotating backing roll. The aqueous slurry of coating material near the downstream end of the coating chamber enters a recirculation channel from which it is directed through a plurality of flow metering orifices back into the mixing chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.