Curtain coating apparatus for the manufacture of paperboard
US3992252A · kind A · utility
4Cited by
2References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1974 |
| Grant date | Nov 16, 1976 |
| Priority date | — |
| Expiry date | Jun 7, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S118/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A coating of liquid starch is applied to a travelling paper web by an application comprising an elongate hollow box structure having a horizontal slot outlet along one side. Starch solution is forced from the chamber horizontally through the slot outlet then flows downwardly under gravity across an upright wall surface to establish a falling curtain of the starch solution. The wall surface terminates at a bottom blade edge and the curtain falls away from the surface at the blade edge to drop onto the paper web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.