Patent ID: 11123530

Abstract:
Method for manufacturing fine hollow protruding tool by: bringing a projecting mold part with a heating means into contact from one surface side of a base sheet including a thermoplastic resin, and, while heat-softening the contact section, inserting the projecting mold part into the base sheet, to form a protrusion protruding from the other surface side; and, after a cooling step, withdrawing the projecting mold part from the interior of the protrusion, forming the fine hollow protruding tool. In the protrusion forming step, the protrusion is formed by using a first warp-suppressing means that suppresses warping of the base sheet when the projecting mold part is inserted into the base sheet. In the release step, the fine hollow protruding tool is formed by using a second warp-suppressing means that suppresses warping of the base sheet when the projecting mold part is withdrawn from the interior of the protrusion.