| abstract |
(57) [Abstract] [Purpose] Waterproofing of the connection between the inner peripheral plate of the coil inner diameter part and the side plate is carried out reliably with a simple operation. [Structure] A steel plate coil 1, a perforated disc-shaped side plate 3 that abuts on both side surfaces of the steel plate coil 1, and a circumferential inner peripheral plate 2 inserted into a hole at the center of the side plate 3 In the steel plate coil package, a connecting portion between the side plate 3 and the inner peripheral plate 2 is covered with a waterproof elastic body 7. |