| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a weed-proof sheet for preventing weeds along the circumference of a columnar member or a curved structure. <P>SOLUTION: This weed-proof sheet includes a winding part 7 to get in contact with an outer circumferential surface of the columnar member or a curved outside surface, and a flange 8 to get in contact with the ground. The flange 8 is composed in double structure including an upper flange 8a and a lower flange 8b which extend from a lower end of the winding part 7 outward to form an L-shaped section. On the upper flange 8a and the lower flange 8b, a plurality of flange pieces 13a, 13a, ... and 13b, 13b, ... are provided through slits 9a, 9a, ... and 9b, 9b, .... The positions of the slits provided on the upper flange and the slits provided on the lower flange are deflected from each other by 1/2 pitch. <P>COPYRIGHT: (C)2012,JPO&INPIT |
