Method for manufacturing hollow stone mechanism, apparatus for manufacturing hollow stone mechanism, and hollow stone mechanism

摘要

The manufacturing method of the hollow protrusion 1 provided with the fine hollow protrusion 3 having the opening 3h of the present invention is a convex mold part from one side 2D side of the base sheet 2A formed containing a thermoplastic resin. (11) is self-injecting, and a protrusion forming step is performed to form a non-perforated hollow protrusion 3 protruding from the other surface 2U side of the base sheet 2A. Next, using the non-contact opening means arranged on the other surface 2U side of the base sheet 2A, an opening forming step of forming the opening 3h penetrating the hollow projection 3 is performed.