| 摘要 |
PROBLEM TO BE SOLVED: To provide a cushioning material capable of effectively absorbing impact and being manufactured at low cost by extrusion molding, and a floor structure using the cushioning material. SOLUTION: The cushioning material comprises a sheet of elastic material having a plurality of hollow parts 10 formed parallel to one another along a plane direction. A protrusion 12 serving as a rib-like member protruding in the thickness direction of the sheet of elastic material by a height smaller than the size of the hollow part 10 in the thickness direction and extending in a direction parallel to the hollow part is provided inside the hollow part 10. COPYRIGHT: (C)2008,JPO&INPIT
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