Complex laminated bamboo board

摘要

A complex laminated bamboo board includes an upper layer and a plurality of lower layers glued to the upper one. The upper layer consists of parallel strips and a pair of ribs alongside them. The ribs extend downward from a level not higher than a top face but not lower than a bottom face of the upper layer to below the bottom face. The lower layers are glued to the upper layer beneath the bottom face and at sides of the ribs. In addition, the strips and ribs of the upper layer are made of a first woody material but the lower layers are made of a second woody material different from the first woody material.