Abstract: A multi-layered composite building material is provided which allows effective utilization of forest resources by using so-called low quality materials such as small-diameter wood, old wood, pieces of wood produced as byproducts of lumbering, and/or bamboo. The material can meet various requirements and properties, and can be produced at a low cost. In a structural layer, an adhesive agent is applied to a plurality of finely split pieces which are formed by finely splitting a raw material such as wood or bamboo. The finely split pieces are arranging in parallel to a fiber direction. A shock/vibration-absorbing layer is formed by applying an adhesive agent to small pieces of wood and bamboo and the like. Structural layers and shock/vibration-absorbing layers are alternately arranged to provide a multi-layered structure. The structure is press-molded to a predetermined thickness and optionally heated such that the layers are adhered together to produce the composite multi-layered material.

Abstract: A multi-layered composite building material is provided which allows effective utilization of forest resources by using so-called low quality materials such as small-diameter wood, old wood, pieces of wood produced as byproducts of lumbering, and/or bamboo. The material can meet various requirements and properties, and can be produced at a low cost. In a structural layer, an adhesive agent is applied to a plurality of finely split pieces which are formed by finely splitting a raw material such as wood or bamboo. The finely split pieces are arranging in parallel to a fiber direction. A shock/vibration-absorbing layer is formed by applying an adhesive agent to small pieces of wood and bamboo and the like. Structural layers and shock/vibration-absorbing layers are alternately arranged to provide a multi-layered structure. The structure is press-molded to a predetermined thickness and optionally heated such that the layers are adhered together to produce the composite multilayered material.