Corrugated board manufacturing system
US6032713A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1997 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | Aug 19, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1016
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A first tension adjustor for adjusting the tension of a liner and a pitch measuring device for measuring the corrugation pitch of a first core board of a single-faced corrugated board are used. A first tension controller operates so that the tension acting on the liner is adjusted on the basis of the corrugation pitch of the first core board of the single-faced corrugated board. Further, a second tension adjustor for adjusting the tension of the single-faced corrugated board and a phase shift measuring device for measuring a phase shift between the corrugations of the first core board of the single-faced corrugated board and the corrugations of a second core board to be laminated to the first core board are used. A second tension controller operates so that the tension acting on the single-faced corrugated board is adjusted on the basis of the phase shift measured by the phase shift measuring device. According to this construction it is possible to prevent a pitch shift and a phase shift of core board corrugations and there can be obtained a corrugated board of high quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.