| 摘要 |
PROBLEM TO BE SOLVED: To provide an assembling board reduced in weight and obtaining large screw holding force even when a screw is driven-in anywhere. SOLUTION: The assembling board 100 includes a middle plate 30 which becomes a core material, a first decorative sheet 10 bonded to the front surface of the middle plate 30, and a second decorative sheet bonded to the backside of the middle plate 30. The middle plate 30 is multilayered. In at least one layer e.g. a second middle layer 32, a reinforcing plate higher in specific gravity and hardness than the core material of the middle plate 30 is provided, and the holding force of a driven joining screw is increased. In this configuration example, a relationship between a thickness of each of the first decorative plate 10, the first layer 31, the second layer 32, the third layer 33, and the second decorative plate 20 and a length of the joining screw 200 is adjusted so that a screw thread is located on the second layer 32 even when the joining screw is driven in from the first decorative plate 10 side of the front surface or from the second decorative plate 20 of the backside. COPYRIGHT: (C)2011,JPO&INPIT |
