WOODEN COMPOSITE MATERIAL, INTERIOR MATERIAL, FLOOR MATERIAL AND SOUNDPROOF FLOOR MATERIAL

To provide a wooden plate material in which dimensional change is comparable to a south-sea plywood, low density of about 400 kg/m3 can be easily achieved, and surface property is excellent to a such degree that a surface decorative material such as a decorative sheet, etc. can be stuck to a surface.SOLUTION: A wooden board A and a surface material B made of MDF having the thickness of 0.5-2.0 mm positioned on one side of the wooden board are integrally joined together by an adhesive layer D containing resin impregnation paper, to constitute a wooden composite material C. The wooden board A is constituted in such a way that a large number of wooden small thin pieces having front and rear surfaces along a fiber direction are laminated in an aggregation state and integrally bonded together. The wooden small thin pieces have the thickness t of 0.05-0.20 mm, the fiber direction dimension (length) along the fiber direction of 10-35 mm, and the fiber-orthogonal-direction dimension (width) along the direction orthogonal to the fiber direction of 0.5-35 mm, and the thickness t and the size are uniform with small variations.SELECTED DRAWING: Figure 1 【課題】寸法変化が南洋合板並みであり、かつ４００ｋｇ／ｍ３程度の低密度が容易に達成でき、表面に化粧シート等の表面化粧材が貼れる程度に表面性の優れた木質板材が得られるようにする。【解決手段】木質ボードＡと、その片面に位置する０．５～２．０ｍｍの厚さを有するＭＤＦからなる表面材Ｂとが、樹脂含浸紙を含む接着層Ｄによって接合一体化された木質複合材Ｃとする。木質ボードＡは、繊維方向に沿った表裏面を有する多数の木質小薄片が集合状態で積層されて接着一体化されてなり、木質小薄片は、厚さｔが０．０５～０．２０ｍｍ、繊維方向に沿った繊維方向寸法（長さ）が１０～３５ｍｍ、繊維方向と直交する方向に沿った繊維直交方向寸法（幅）が０．５～３５ｍｍで、厚さｔや大きさのばらつきが小さくて均一に揃ったものとする。【選択図】図１