| 摘要 |
PROBLEM TO BE SOLVED: To increase work efficiency in replacing the lower portion of a sheet by replacing the lower portion of the sheet without fitting connection members to the sheet beforehand. SOLUTION: The sheet shutter comprises the sheet 1 and a connected part 5 formed on the surface part of the sheet 1 and extending in the lateral direction of the sheet. The connected part 5 is connectable to a replacement sheet 10 and formed in such dimension and shape that do not obstruct the normal opening and closing of the sheet. The connected part 5 is connectable to the replacement sheet 10 through the connection members 6, 7, and 8. The connected part 5 comprises a bag-like part 50 extending in the lateral direction of the sheet and a shaft part 52 stored in the bag-like part 50. COPYRIGHT: (C)2007,JPO&INPIT
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