| abstract |
A laminated material comprises a plurality of straight portions of vegetable stalks, each having an epidermis mainly of lignocellulose and a porous core. These straight portions of vegetable stalks are impregnated with a thermal hardener solution of a high-molecularisable liquid compound, resinified liquid, or mixture thereof. The stalks are then arranged in parallel to form a layer of a sheet-like material, the sheet-like materials are stacked on each other and pressed to cause the layers to come into close contact in a flat condition. It is possible to alternate the directions of vegetable stalks in adjacent sheet-like materials in order to increase the bending strength and other physical strength of the stacked multi-layer laminated material, such as a pillar-like laminated material. Such pillar-like material is made by using a female mold and male mold, pressed together, the vegetable stalks being placed in the female mold and hot-pressed. After the vegetable stalks are laminated, the resin compound in the thermal hardener solution can be set or hardened by heat treatment. |