| 摘要 |
A filled bag (101) for providing part of a temporary barrier to water, comprises a water permeable envelope (502) containing a granular material (401) of a type which absorbs water and swells up. The bag (101) also comprises connecting means (501) for connecting opposing pads of the envelope, such that the granular material (401) surrounds the connecting means. Thus, when the bag is immersed in water and the granular material swells to fill the envelope, the connecting means holds the opposing parts of the envelope together to provide the envelope with a shape that is stable on a flat surface. The envelope may be of woven fabric such as hessian and the connecting means may comprise stitches of jute yarn. The material (401) may be a super absorbent polymer. |
