Multi-ply headbox for a papermaking machine
US4824524A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1988 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Jan 28, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F9/006
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a multi-ply headbox, the nozzle chamber is subdivided by rigid partition walls into a number of nozzle chambers, and the slice openings or outlet slices are adjustable independently of one another. This is accomplished by providing a pivotable mounting of the partition wall or walls in a guide block, for instance, such pivotable mounting being accomplished by a substantially cylindrical shell or cup bearing structure. The desired pivotable movement or adjustment of the rigid partition wall can be undertaken by an inclined groove-cam guide arrangement effective at a projection of the partition wall or by pressure cushions, such as pressure hoses effective at both sides of the projection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.