Patent ID: 8177935

Claim:
An end treatment method of a laminated plate, comprising: a first step of supporting a thermoplastic resin-made laminated material in which a pair of plate-like members are laminated to each other with a longitudinal wall interposed therebetween, by sandwiching the laminated material from front and back surfaces thereof by a support member such that a peripheral edge portion of the laminated material is exposed, and heating and softening the peripheral edge portion by blowing a hot air to an entirety of the peripheral edge portion; and a second step of pressing one of the plate-like members against an other of the plate-like members by thrusting a cutting blade of a cutting die against the heated and softened entirety of the peripheral edge portion, thereby bringing the pair of plate-like members into contact with each other and welding the plate-like members to each other, and then cutting the laminated plate out of the laminated material, wherein, in the first step, supporting the laminated material is performed by sandwiching the laminated material such that the entirety of the peripheral edge portion thereof is exposed, and heating and softening of the peripheral edge portion is performed by blowing the hot air to the entirety of the peripheral edge portion.