| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a synthetic resin-made shelf board that is free from destruction or whitening when the end of a reinforcing material strongly pressurizes the wall of the hollow part in a molding plate by a load on the shelf board, while the opening side of the metallic reinforcing material having a U-shaped or an M-shaped cross section is inserted so as to face the vertical direction of the shelf board inside the hollow part of the molding plate. <P>SOLUTION: In the shelf board, a connecting board 1c connects between an upper face plate 1a and a lower face plate 1b in the molding plate 1 which is molded in a hollow flat cylindrical shape with synthetic resin, wherein strength against bending is increased by inserting the U-shaped or M-shaped metallic reinforcing material 5 into the hollow part 2 that is divided by the connecting board. The reinforcing material is inserted into the hollow part 2 in such a manner that an opening 5d between a pair of side face plate 5b faces the vertical direction of the shelf board. Also, a portion with which the end part 5c of the pair of side face plates of the reinforcing material comes into contact in the molding plate is formed as a thick wall 1d that suppresses the destruction or whitening due to the pressurization by the end part. <P>COPYRIGHT: (C)2012,JPO&INPIT |
