| 摘要 |
<p>A sandbag enabling a reduction in the deformed amount of the surface of a bag body in the expansion of water absorbents, comprising the bag body (2) having a closed chamber (3) storing the water absorbents (5) expanded in volume by absorbing water and an open chamber (4) in which a space is formed adjacent to the closed chamber (3). The inner surfaces (7) of the closed chamber (3) are swelled toward the inside space of the open chamber (4) according to the expansion of the water absorbents (5) to diffuse the expansion force of the water absorbents (5). Accordingly, the swelling of the outer surfaces (3a) of the closed chamber (3) can be suppressed, and the swelled amounts of the upper and lower surfaces (2a) and (2b) of the bag body (2) can also be reduced.</p> |
