| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet shutter which can control the generation of noise and which can obtain crime prevention performance. SOLUTION: The sheet shutter 100 is provided with a rectangular sheet body which is taken up in sequence on a rotary shaft from one side part to the other side part 22 which are fixed in parallel with each other. The sheet body is formed in a laminated state by a first core material, a second core material, a surface sheet material 33, and a back sheet material. The first core material and the second core material, which are surface-shaped and parallel with each other, are formed by weaving reinforced fiber in a lattice shape. The surface sheet material 33 and the back sheet material sandwitch the first core material and the second core material and seal the inside by joining each circumference. The surface sheet material 33, the first core material, the second core material, and the back sheet material of the laminated sheet body 21 are sewn by a plurality of seams 37a, 37b which are provided in different directions. It is desirable that the first core material of the laminated sheet body 21 be woven in a lattice shape which consists of the warp parallel with the take-up direction and the weft orthogonal to the warp, and that the second core material be woven in a lattice shape which consists of the warp inclined in the take-up direction and the weft inclined in the direction opposite to the warp. COPYRIGHT: (C)2010,JPO&INPIT
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