| 摘要 |
PROBLEM TO BE SOLVED: To obtain a laminated soundproof floor material for a residence, in which sound-insulating characteristics are improved largely and sufficient rigidity and moisture interruption action are acquired simultaneously, by combining and sticking a pressed cork board, a metallic foil, plywood and a cushioning board. SOLUTION: An adhesives is mixed with cork grains crushed in a proper grain size and compressed and bonded and pressed cork boards 3 are manufactured, and wood fibers are compressed and bonded with an adhesive, thus preparing plywood 1. A cushioning material 4 consists of a synthetic resin foam such as a polyester nonwoven fabric, foamed polystyrene or the like, and a metallic foil 2 is composed of an iron material, an aluminum-material lead material or a copper material, in which thickness is set in 70-150μm. A laminated soundproof material is formed by sticking the pressed cork board 3, the metallic foil 2, plywood 1, the metallic foil 2, the pressed cork board 3, the cushioning material 4 and the metallic foil 2 as a lowermost layer from upper sections respectively. Accordingly, large sound-absorbing and vibration-absorbing effects can be obtained to the sound of footsteps in an indoor section, a living sound or an impact sound, and a lightweight floor material having excellent walking feeling at a low cost can be acquired.
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