Process for making wood chips
US6003572A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 10, 1998 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Aug 10, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27L11/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process and apparatus for manufacturing wood chips as raw material in the production of mechanical pulp in order to reduce energy consumption. The process includes irreversibly deforming a plurality of fibers of at least one piece of wood in a direction perpendicular to the longitudinal axis of the fibers. The wood fibers include summerwood fibers. The irreversible deformation is accomplished through mechanical treatment. The apparatus used includes one or several tools arranged so that the forces created during the process act in a direction substantially perpendicular to the longitudinal axis of the fibers so as to irreversibly deform the fibers across the grain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.