| 摘要 |
Provided are a method for manufacturing a thermoplastic resin molded article having a hollow portion, and a thermoplastic resin molded article with the upper surface thereof having a surface area of 1 m 2 or more manufactured by the method, the method being characterized in that a molded article (A) premolded from a thermoplastic resin is set in a first die, a melted thermoplastic resin plate (B) is attached to the inner surface of a second die facing the first die by vacuum pressure to thereby be formed in a shape along the inner surface of the second die, the thermoplastic resin plate (B) and the molded article (A) are welded only in a predetermined region by mold-clamping the first die and the second die, and at least part of an unwelded region is formed as a hollow portion. Even when it is required to form a thin and large-area resin molded structure and a hollow structure in part thereof, a thermoplastic resin molded article having the target structure can be easily, efficiently, and moreover accurately manufactured. |
