| 摘要 |
The present invention relates to a seat board used for a chair. The purpose of the present invention is to provide the seat board used for the chair with excellent durability and cushioning feeling and having economic efficiency. A core unit is made of a marble sponge (10), and latex is foamed to an outer surface of the marble sponge (10) of the central core unit to produce a cushion member (30) integrating a latex foaming layer (20) with the marble sponge (10). |
