Southern pine strands were blended with 3% solids liquid phenol formaldehyde (PF) resin by wood weight in the panel face layers, and 1.4% pMDI resin by wood weight in the panel core layers. The wax emulsions were applied at a 1% solids by wood weight to both the face and core for both...
1.3. Ponderosa Pine in the Willamette Valley The Willamette Valley is located in northwestern Oregon (Figure 1), a region composed of agriculture, developed urban areas, and temperate forest. Douglas-fir (Pseudotsuga menziesii) dominates the majority of surrounding forests of the Willamette Valley, ...