抄録
In order to use the Japanese cedar, studies of compression wood are making progress. It has been cleared that compression wood improve on the strength, rigidity and hardness. In this study, to make the bending and compression wood, Japanese cedar is pressed on the several conditions (combinations of plasticizing and punch speed). The results are summarized as follows. (1) Forming the bending wood need irradiation time at least 60 seconds in microwave. (2) The probability of occurrence of fractures is proportional to punch speed. But inclination angle of annual rings control the occurrence of fracture. (3) The strength of the bent wood is improved by compression.
