Method for manufacturing ligneous material
US6723766B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2000 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Jun 9, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27N3/002
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention relates a method for manufacturing ligneous material, characterized in comprising the steps of acetylating wood elements selected from among wood pieces crushed from lumber, thin wood plates peeled from lumber, and wood fiber obtained by means of defibrating lumber, such that the degree of acetylation (weight percent gain) is 7% or greater, and preferably 7 to 18%; and binding the resultant aceylated wood elements, using a binder containing polyisocyanate. Thereby, it is possible to provide inexpensive ligneous material which exhibits only minor dimensional changes from moisture, wherein only a small amount of formaldehyde is released.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.