Headbox for a paper machine for the production of a fiber web of at least two plies
US4181568A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 1978 |
| Grant date | Jan 1, 1980 |
| Priority date | — |
| Expiry date | May 30, 1998 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F9/006
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A headbox for a paper machine for manufacturing at least a two-ply fiber web, comprising separate slice channels each connected to a separate source of fiber suspension and forming a slice opening extending across the wires of the paper machine for supplying separate fiber suspension streams upon the wires. The slice chambers are separated from each other by means of division walls each supported at the upstream end by the headbox adjustably in the cross direction with respect to the flow direction of the fiber suspension in the slice channel in order to allow adjustment of the cross sectional areas of said slice channels at the upstream ends of the division walls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.