New Softening Treatment for Beech Logs Before Rotary Peeling to Veneers

A closed system is presented for hot water softening of beech peeler logs by individual log treatment. It is similiar to equipment used for wood preservation. Temperatures up to 130?C and a pressure of 114 pounds per square inch are used to reduce log treating times from 100 hours in a soaking vat to 4 to 12 minutes in the process described. Temperature of ingoing and outflowing water is a simple means for control. Logs high in dote or heartwood and frozen logs do not treat well. Logs treated by this method produce a light-colored high-tensile veneer with a minor trend to marginal splits when kiln-dried. The process yields savings in heat consumption and seems to lend itself to mechanization.

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