Development of a new incising technology for plywood/LVL production. Part 2. Effect of incising on LVL strength properties

The development of a new method to incise veneer at the lathe was described previously in Part 1. Using this technology, it was shown that incising veneer at the lathe can significantly improve veneer quality and recovery. This paper discusses the effect of incising at the lathe on laminated veneer lumber (LVL) mean strength properties. It was found that veneer incising does not significantly affect the LVL mean edgewise bending modulus of elasticity and modulus of rupture and mean longitudinal shear strengths for both plank and joist applications. Thus the small cuts or incisions oriented along the grain have no significant effect on the LVL mean strength properties. Veneer incising also has no significant effect on the conventional LVL average hot-pressing time and LVL average compression ratio.

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