Method for manufacturing hollow needling implement, device for manufacturing hollow needling implement, and hollow needling implement

An apparatus for manufacturing a hollow protruding implement including a fine hollow protrusion having an opening, the apparatus comprising:

• a protrusion forming section including a protrusion-forming projecting mold part that is disposed on one face side of a base material sheet containing a thermoplastic resin;
• a cooling section that cools the non-penetrated hollow protrusion;
• and
• an opening forming section including a contactless opening forming means that is disposed on another face side of the base material sheet,
• wherein the apparatus is configured to insert the projecting mold part into the base material sheet from the one face side thereof, thereby forming a non-penetrated hollow protrusion projecting from the other face side of the base material sheet, and to subsequently form an opening as a through hole in the non-penetrated hollow protrusion by using the opening forming means from the other face side of the base material sheet while the non-penetrated hollow protrusion is being cooled by the cooling section, and
• wherein the opening forming section is configured to form the opening in a state in which the projecting mold part is inserted in an interior of the non-penetrated hollow protrusion.