| 摘要 |
PROBLEM TO BE SOLVED: To provide a fiberboard excellent in surface smoothness, strength characteristics and dimensional stability, for which an inexpensive plant raw material having a stable price can be used.SOLUTION: A fiberboard 1 formed in a plate shape, in which fibers are stuck with an adhesive is composed of a long fiber layer 2 and a short fiber layer 3 formed on its external surface. The long fiber layer 2 is a layer formed by mixing a bast long fiber having an average fiber length of ≥5 mm and ≤50 mm and an average fiber diameter of ≥100 μm and ≤400 μm, with a first plant short fiber having the average fiber length of ≥2 mm and <5 mm and an aspect ratio of ≥10. The short fiber layer 3 is a layer formed of a second plant short fiber having the average fiber length of ≥2 mm and <5 mm and the aspect ratio of ≥10 wherein the thickness of the short fiber layer 3 is ≥0.1 mm. |
