| 摘要 |
PROBLEM TO BE SOLVED: To provide a water retentive floor material capable of maintaining a water permeable function for a long period of time because soil hardly stays on the surface of the floor material to hardly cause plugging. SOLUTION: The surface of the floor material is provided with a large number of projecting parts for supporting the soles of feet, and recessed parts formed between the adjacent projecting parts. The recessed parts have depth to such an extent that the soles of the feet do not contact when stepping in. COPYRIGHT: (C)2009,JPO&INPIT
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