| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive, light-weight synthetic resin shelf board having excellent bending deflection property when the board is loaded with a load for a long time. SOLUTION: A reinforcement crosspiece is provided with opening portions 11 for fitting reinforcement bodies 6 and at least one hollow hole 5 formed by connecting the opening portion and a hollow portion 13 on one side thereof through an opening path 12. The reinforcement body having a shape ratio (t/h) of thickness (t) to height (h) of less than 0.2 is inserted in the hollow hole. COPYRIGHT: (C)2005,JPO&NCIPI
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