Patent ID: 9346652
Filing Date: 2016-05-24
CPC Classification: B65H

Claim Text:
1. A film winding core on which a long film is to be wound, comprising: a tubular bearing portion into which a shaft used to rotate the film winding core is to be inserted; a plurality of film supporting portions respectively provided at positions outward from leading edges of the blade portions, the plurality of film supporting portions having an outwardly protruding shape so that the film is supported away from the film winding core between the film supporting portions that are adjacent to each other in the rotational direction, and a rim portion located on the leading edges of the blade portions, the rim portion having a tubular shape that surrounds the bearing portion in the rotational direction, wherein the film supporting portions are fixed to the rim portion, the rim portion is fixed to the bearing portion by the blade portions, each of the blade portions has a rectangular plate shape, the rim portion is located on one side of the blade portions, and the bearing portion is located on another side of the blade portions,