| 摘要 |
PURPOSE:To prevent slippage by using a natural or synthetic fiber or a textile blend woven cloth, a net or a nonwoven cloth on a section on which workers walk. CONSTITUTION:A thick canvas fabric of textile blend of cotton and polyester is used on an upper face 1 and a lower face 2 on which workers walk and a steel sheet coil, cold-processed and coated with a large amount of rustproof oil. When the canvas is spread all over in the wide range, for example, the width is made 1m and the length is made 2m in consideration of replacing several canvases partially, and, for example, lines 6, 7 and 8 parting three sizes 3, 4 and 5 and also parting into four in the longitudinal direction by a sewing machine to form perforations. A cover 9 closing openings is provided on the upper face 1 so that workers are not caught in the openings when the canvasses are spread all over. Oil absorbing materials 10-15 are wrapped by the nonwoven cloth and can be fed in and out by holding up the cover 9. Slippage can be prevented by the arrangement. |
