| 摘要 |
PROBLEM TO BE SOLVED: To make a soundproof flooring material effective further for reducing propagation of sound by making the soundproof material itself equipped with a capacity of sound absorption. SOLUTION: For a soundproof floor made of a composite material comprising a wooden plywood 5b and a soundproof flooring material 3, the soundproof flooring material 3 is made of a synthetic resin foam or a foam rubber, and protuberances 32 and incisions 33 are formed at least at one side thereof.
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