| 摘要 |
<p>The system has a lower die (10) including a recess (10a) with a longitudinal base wall (10b) that is provided with concavity in longitudinal direction. A die (20) includes a longitudinal base wall (20a) with convexity in the longitudinal direction. A ceiling lamp is made up of polyester and is provided with a bottom wall, which includes a profile bent in longitudinal direction. A ceiling lamp cooling unit cools the lamp to provide automatic material shrinkage of the lamp in a cooling phase so that the ceiling lamp obtains desired absolute flatness.</p> |
