| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite flooring material which prevents expansion/contraction, caused by heat and moisture, by utilizing a wood-based base material such as a wood fiber board as a base material for a flooring material and combining it with a thermoplastic resin base material, which has sufficient strength and deflection resistance, and which is excellent in designability. SOLUTION: In this composite flooring material A, a lowermost layer serves as a first layer; second and third layers are superposed on it; the first layer is composed of the wood-based base material 1; the thermoplastic resin-based base material 2 is internally provided as a center core in the second layer; and the wood-based base material 3 is superposed as the third layer. A polyolefin resin itself or a WPB (wood plastic board) is used as the thermoplastic resin-based base material 2. A particle board or a MDF (medium-density fiberboard) is used as the wood-based base materials 1 and 3. COPYRIGHT: (C)2009,JPO&INPIT
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