Film applicator with entrained air removal and surface control
US5665163A · kind A · utility
14Cited by
13References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1995 |
| Grant date | Sep 9, 1997 |
| Priority date | — |
| Expiry date | Aug 22, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C11/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A uniform film of coating is delivered onto a substrate at high speed by a film applicator, such as a coater apparatus for a papermaking machine, which has a static converging wedge, an adjustable converging wedge, and an extraction channel located between the two wedges. As a unit, the film applicator minimizes the hydrodynamic flow instabilities, as well as reduces flow variations associated with a nonuniform feed and a dynamic contact line. The film applicator also removes entrained air and excess coating from the application zone in order to improve the flow stability and machine runnability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.