| 摘要 |
Provided are a production method and a production device for hollow structure plates exhibiting excellent producibility and unlikely to cause defects when thermally fusing hollow projecting parts. Molded sheets are obtained by forming frustum-shaped, hollow projecting parts in a zigzag pattern on one surface of a thermoplastic-resin sheet via vacuum forming. Next, two sheets are integrated with one another by aligning and thermally fusing the hollow projecting parts thereof after heating the two molded sheets. During this integration step, for example, at positions aligning with each of the hollow projecting parts formed on the molded sheets, the tip sections of the hollow projecting parts on the molded sheets are selectively hot-air heated using a hot-air generator (22) equipped with a nozzle (22a) in which a plurality of hot-air discharge ports (22b) are formed. |
