| 摘要 |
PROBLEM TO BE SOLVED: To provide a tread for a stairway having sufficient strength and a damage resistant property, small in anisotropy of strength, small in length change due to a temperature change and a humidity change and capable of restraining deformation such as warp, pushing-up, etc., and production of a surface finishing material. SOLUTION: The tread for a stairway tread comprises a fiber board 4 manufactured by thermocompression-molding a long-fiber mat made of aggregates of long fibers 2 on which an adhesive is dispersed and the surface finishing material 5 adhered to at least one surface of the fiber board 4. As the long-fiber mat, a long fiber 2 of 100-4000 mm in length obtain from at least one among an ambari hemp bast part, oil coconut and a coconut palm is oriented in the same direction and used.
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