サンドイッチロールプレス法による長尺圧縮木材の製造

抄録

New lumber compression process, named sandwich roll press method, was developed. In this method lumber is rolled with a pair of metal jigs because rolling process is more suitable than prevalent press process to manufacture long products such as bar or column which is necessary for wood market. In this paper, limit compression ratio and plasticizing conditions of new method were investigated experimentally, and bending test was performed for estimation of strength of the products. The results indicate that this new method has possibility to manufacture longer lumber compressed highly than the manufactured by press process and that plasticizing conditions don't influence surface appearance and bending strength of lumber compressed by new method as the conditions of press process. These results show the effectiveness of this new method.