| 摘要 |
<p>To obtain a sheet capable of controlling the amount of passage of a fluid such as, to begin with wind, earth, water (including sea water) or their mixture, excellent in visibility of the sheet and endurance, also flexible, and having a good working efficiency by adopting a knitted or a woven structure obtained by arranging fiber groups A formed with slit state vacant spaces having a spacing of 0.5 mm or larger between adjacent fibers each other and fiber groups B as a lattice state, and having mesh state vacant spaces having widths of each 2 to15 cm, and enclosed by the above fiber groups A and fiber groups B in an orientation direction of the fiber group A and in an orientation direction of the fiber group B <IMAGE></p> |
