SHEET SHUTTER

PROBLEM TO BE SOLVED: To provide a sheet shutter excellent in heat insulation property, dustproofness, sound insulation property, and versatility. SOLUTION: Pipes 17 extending in the width direction of the sheet are provided in every required distance. The two ends of the sheet 3 in the width direction and the pipe 17 enter in the box body 10 from an opening 24. The two ends of the sheet 3 in the width direction and the pipe 17 are sealed at the outside of a storage by a fixing seal 27 and sealed at the inside of the storage by a movable seal 29. The movable seal 29 moves to separate from the sheet 3 when the sheet 3 is moving up/down and is at the opening limit, and moves to collide with the sheet 3 while the sheet 3 is at the closing limit. In this time, at both ends of the pipe 17, the soft packing 29a of the movable seal 29 dents so as to follow the pipe 17 and sealed with the smallest clearance. COPYRIGHT: (C)2005,JPO&NCIPI