Effect of using a hot-press to suppress surface checks in sugi boxed heart square timbers during the drying process

摘要

In this study, we investigated the effect of using a hot-press for suppressing surface checks in sugi {Cryptomeria japonica D.Don) boxed heart square timbers during the drying process. The treatment for suppressing surface checks in timber is to form a surface drying set in it. This report presents the effect of using a hot-press for the formation of a surface drying set in sugi boxed heart square timbers. The results of this study are summarized below.(1) In this surface treatment, the drying set was formed in the 1st layer under each test condition. However, in the 2nd and 3rd layers, the drying set was hardly formed.(2) In this study, two types of plates were used: a flat plate with a smooth surface and a slit plate with grooves cut into the surface to make it easier for it to release vapor. However in these results, the effect of creating slits was not apparent.