PURPOSE: A bobbin for transporting wire materials is provided to reduce the volume in collection because the core barrels and the flanges can be disassembled. CONSTITUTION: A plurality of core barrels(11) and flanges(12) are assembled. The core barrels can be slit in the height direction. Arc-shaped fitting holes are formed in the circumferential direction on the flange where projections formed on the ends of the core barrels are fitted. The fitting hole includes wide and narrow width parts continuously formed.
