| 摘要 |
A multi-purpose bulletin board is provided to reduce the weight and to increase productivity by minimizing the number of steel wires inserted to gullies of a corrugated sheet not to influence attachment of a magnet. A multi-purpose bulletin board is composed of a base layer(12) for holding the shape; a surface layer made of fabrics or porous materials such as corks; and a frame(15) for finishing the rims of the base and surface layers. A corrugated sheet(13) is bonded and fixed between the base and surface layers. Steel wires(17) having a diameter smaller than the inner diameter of gullies(18) of the corrugated sheet are inserted into each gulley. The base layer is a reinforcement made of a veneer board. |
