| 摘要 |
PROBLEM TO BE SOLVED: To improve anisotropy of nonslip performance generated owing to the fact that a direction having periodicity is present in antislip grooves provided on an antislip surface of a nonslip floor material.SOLUTION: An antislip surface 1 of a base material 2 of a nonslip floor material 10 is configured by grooves 1g and projected areas 1c, and a plan view pattern 1P which is a planar view when viewing the grooves from above and in which the grooves define a number of closed areas A corresponding to the projected areas is composed of a number of boundary line segments L each extending between two branch points B and defining the closed areas, and satisfies the three conditions: (a) the average value N of the number of the boundary line segments extending from one branch point is 3.0≤N<4.0, (b) the shapes of the closed areas include polygons of two or more kinds selected from pentagon, hexagon, and heptagon, the number of hexagonal closed areas being most, and (c) the shapes of polygons having the same number of sides are not same. Furthermore, it is favorable to satisfy also a condition that the pattern includes areas where no direction having periodicity is present in arrangement of the closed areas. |
