Koyo Sangyo Co., Ltd.

Yasuo Tamura

Mitsumasa Horikawa

Ryoji Tanaka

Takahiko Gohma

Koichi Kimura

Katsutoshi Sasagawa

Shinji Tanzawa

A workpiece comprising an aggregation body of platelike articles, sheet-like whose fibers have been opened by rolling, stick-like articles formed by finely tearing them from a single plate, flake-like articles, strand-like articles or the like is inserted between an upper heat plate 12 and a lower heat plate 13 of a heating press apparatus 10. A spacer 14 for surrounding the workpiece and determining the final thickness of the product is arranged on one or both of the heat plates before or after the insertion of the workpiece 11. The workpiece is compressed by the upper heat plate 12 and the lower heat plate 13 to thereby form an air tight compartment made of the upper heat plate 12, the lower the plate 13 and the spacer 14, and containing the workpiece. The air tight compartment is decompressed by vacuum for a predetermined period, then steam or heated gas is jetted onto the workpiece in the compressed air tight compartment. Preferably, a decompressing is ensured again after jetting the steam or the heated gas, resulting in the final thermocompressed aggregation product.

Method for forming aggregation body by thermocompression

A laminated material comprises a plurality of straight portions of vegetable stalks, each having an epidermis mainly of lignocellulose and a porous core. These vegetable stalks straight portions are impregnated with a thermal hardener solution of high-molecularizable liquid compound, resinified liquid, or mixtures thereof, arranged in parallel to form a layer of a sheet-like material, piling these sheet-like materials and pressing them to make these layers come to contact closely in flat condition. It is possible to make the directions of vegetable stalks in the sheet-like material different from the neighboring layers in order to strengthen a bending strength and other physical strength of the piled multi-layer laminated material, such as a pillar-like laminated material. Such pillar-like material is made by using a pair of pressing female mold and male mold, vegetable stalks being placed in the female mold and hot-pressed. After these vegetable stalks are laminated, the resin compound in the thermal hardener solution is set or harden.

Laminated material and process for manufacturing the same

A laminated material comprises a plurality of straight portions of vegetable stalks, each having an epidermis mainly of lignocellulose and a porous core. These vegetable stalks straight portions are impregnated with a thermal hardener solution of high-molecularisable liquid compound, resinified liquid, or mixtures thereof, arranged in parallel to form a layer of a sheet-like material, piling these sheet-like materials and pressing them to make these layers come to contact closely in flat condition. It is possible to make the directions of vegetable stalks in the sheet-like material different from the neighboring layers in order to strengthen a bending strength and other physical strength of the piled multi-layer laminated material, such as a pillar-like laminated material. Such pillar-like material is made by using a pair of pressing female mold and male mold, vegetable stalks being placed in the female mold and hot-pressed. After these vegetable stalks are laminated, the resin compound in the thermal hardener solution is set or harden.

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Kanagawa, Japan

Yasuo Tamura