| 摘要 |
<p>A large-gravity protective bag of easy handling that whoever handles the same, can be unfailingly expanded within a few minutes, and that can resist water power anticipated in case of construction of a floodbank, and that is highly effective in not only waterproof use but also bulletproof use. There is provided protective bag (10) adapted to by feeding water into the interior of a constituent material with baglike structure, swell a highly water-absorbing polymer disposed within the constituent material and to by the swelling pressure, maintain a flat configuration, wherein accommodation body (11) of a water-soluble resin is packed with highly water-absorbing polymer (14), and wherein the required amount thereof is divided in multiplicity and disposed within constituent material (12), and wherein weight body (15) packed with large-gravity substance (16) with a specific gravity larger than that of water is disposed within the constituent material (12). The constituent material (12) has a sheet material of resin fibers knit together.</p> |
