| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a sheet shutter capable of lengthening the service life of a sheet, without deteriorating an outward appearance even when installing the sheet shuter in any direction in an entrance of a factory, by preventing damage of both obverse-reverse surfaces of the sheet.SOLUTION: The sheet shutter 1 comprises a frame 2 constituted of an upper frame 3 and a side frame 4, a rotary shaft 6 rotatably provided in the upper frame 3 and connected to driving means 7, the sheet 5 suspended so as to freely wind and unwind on the rotary shaft 6 in arrangement where left-right end parts are positioned in the side frame 4 and a weight material 10 provided in a plurality at an interval in the lateral direction of the sheet 5 in a lower end part of the sheet 5, and one or a plurality of contact prevention tools 11 are provided toward the vertical direction in a mutually opposed position or an unopposed position by sandwiching the sheet 5 on a surface and a reverse surface of the sheet 5.</p> |
