High-Performance Structural Flakeboards from Douglas-Fir and Lodgepole Pine Forest Residues.
Abstract
Process requirements were investigated toward making a flakeboard using forest residues which could meet performance goals of the U.S. Forest Service 'Structural Flakeboard from Forest Residue' program. These goals represent an estimate of minimum design properties for satisfactory performance of flakeboard as floor and roof sheathing. A first group of panels was made which varied in species, flake alinement, density, and resin quantity, and then was evaluated. A second group was made to investigate structural properties with varying flake moisture content, length of disk face flakes, thickness of ring core flakes, and press closing time. The panel type chosen as most warranting more thorough study was of random flakes in three-layer construction, with 0.02- by 2-inch face flakes and a core of 0.05- by 2-inch ring flakes. The panel was bonded with 5 percent phenolic resin and pressed to a density of approximately 40 pounds per cubic foot. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1976
- Accession Number
- ADA035634
Entities
People
- Terry J. Ramaker
- William F. Lehmann
Organizations
- Forest Products Laboratory