| 摘要 |
PROBLEM TO BE SOLVED: To provide a wooden floor which absorbs impact energy and makes a G-value at an impact set at 100 G or less, even when the impact energy twice or more higher than impact energy based on conventional criteria for evaluation is applied to the wooden floor, by making the wooden floor absorb the impact energy generated at falling etc., so as to reduce the impact received by the human body. SOLUTION: A wooden flooring material 10 at least includes a wooden surface material 11, and an impact absorbing material 12 which is superposed on the backside of the wooden surface material 11. In the wooden surface material 11, a plate material with a length of 350 mm and a width of 50 mm is identical in material and thickness to such a plate material as to have the maximum amount of deflection of the plate material set within a range of 0.0013-0.0214 mm when the plate material is supported with a span of 300 mm and has a concentrated load of 0.1 N acts on the center of the span. The impact absorbing material 12 has an Asker C hardness of 40-50 and a thickness of 6 mm or more. COPYRIGHT: (C)2011,JPO&INPIT
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