Method and apparatus for making corrugated board
US4288273A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1980 |
| Grant date | Sep 8, 1981 |
| Priority date | — |
| Expiry date | May 12, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31F1/2836
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A corrugator line includes a single facer and a double backer with a horizontal bridge extending between them. Instead of conducting the web from the single facer to the double backer as fan folds on a horizontal belt conveyor, a dancer type accumulator is positioned on the bridge between the single facer and the double backer and the web is looped back and forth between the accumulator stationary rollers and its movable dancer and the dancer is force loaded away from the stationary rollers so as to maintain substantially constant tension in the moving web. Provision is made for controlling the speed of the single facer or the double backer in response to excursions of the dancer from a reference position to allow the single face material to spend a uniform time between the single face and double back processes. Also, a steering assembly is positioned on the bridge to align the web from the single facer with the machine center line of the double backer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.