Patent ID: 9316233
Filing Date: 2016-04-19
CPC Classification: B29C,B29K,B29L,F04D,F05D

Claim Text:
1. A method of manufacturing a propeller fan comprising: molding the propeller fan including a hub having an end surface wall and a peripheral wall, and a plurality of blades on an outer periphery of the hub, using a metal mold including a cavity and a runner connected to the cavity via a gate and serving as an injection passage of a molten resin containing a continuous fiber, by injecting the molten resin into the cavity through the runner, wherein the plurality of gates is set at a part of the end surface wall corresponding to a root portion of the blade of the propeller fan in the cavity, and wherein the plurality of injection positions is provided so that a flow direction of the resin material containing the continuous fiber in the root portion of the one blade of the hub is regulated by the flow of the resin material from the injection positions adjacent to each other, and is in a direction perpendicular to a width direction of the root portion of the blade.