Mechanical pulping refiner plate having curved refining bars with jagged leading sidewalls and method for designing plates
US8157195B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 7, 2011 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Mar 7, 2031 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21D1/306
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of mechanically refining lignocellulosic material in a refiner having opposing refiner plates including: introducing the material to an inlet in one of the opposing refiner plates or array of plate segments; rotating at least one of the plates with respect to the other plate, wherein the material moves radially outward through a gap between the plates due to centrifugal forces created by the rotation; passing the material over bars in a refining section of a first one the plates and through grooves between the bars, wherein the bars each include a sidewall with an irregular surface, and discharging the material from the gap at a periphery of the refiner plates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.