VENT PIECE AND PNEUMATIC TIRE MANUFACTURING METHOD

摘要

Provided are: vent pieces, which can easily be added later and with which the occurrence of spew can be adequately limited without restriction of the sites where the vent pieces can be placed neatly in vulcanized molding of a pneumatic tire; and a pneumatic tire manufacturing method for vulcanized molding of a raw cover using a pneumatic tire vulcanization mold in which said vent pieces have been embedded. A vent piece, which is used by being embedded in an air extraction pilot hole provided on the inner surface of a pneumatic tire vulcanization mold, is a cylinder without a hole in the axial direction and is configured to perform air extraction from a gap formed between the vent piece and the side surface of the air extraction pilot hole. A vent piece has a saw cut extending in the axial direction formed on the side surface of the cylinder. A pneumatic tire manufacturing method for vulcanized molding of a raw cover uses a pneumatic tire vulcanization mold in which said vent pieces have been embedded.