| 摘要 |
PROBLEM TO BE SOLVED: To provide a backstop showing a more superior durability or economical efficiency, and further provide a bullet stopper block for the backstop showing a superior bullet stopping characteristic against a high-speed bullet launched from an automatic rifle and the like.SOLUTION: A bullet stopper block 10 has a 6-layer structure [a 7-layer structure if it includes a clearance 17] including [1] a front side thermoplastic resin plate 11F, [2] a front side compression molding rubber plate 13F, [3] a layer 16 of a golf ball 15, [4] a rear side compression molding rubber plate 13B, [5] a rear side thermoplastic resin plate 11B, and [6] a steel plate 18, from a target side toward a bullet flying direction [a rearward direction].SELECTED DRAWING: Figure 2 |
