| 摘要 |
PURPOSE:To form and line the surface material in one process by a method wherein the surface material is held between a female die and an upper die, a space formed between the surface material and the upper die is filled with a foamed resin material and the space is made vacuum and heated for foaming. CONSTITUTION:On the female die 2 is placed an aluminum leaf 1 which is to be the surface material with the side thereof to form a reflecting surface being faced to a molding surface 3 and thereon a proper quantity of foamed resin material 9 such as foaming polystyrene beads is placed. After that, the upper die 6 is mounted and pressing force is applied, and the space between the female die 2 and the aluminum leaf 1 is sealed air-tightly by a seal ring 5. Next, the space between the aluminum leaf 1 and the female die 2 is exhausted to be vacuum and over-heated steam and the like is blown in from a hot-wind blow-in port 7, whereby the foamed resin material 9 is foamed. Then, after cooling, the vacuum is released, the upper die 6 is removed, and thus a screen material to which the foamed resin 9a is stuck monolithically and which has the fine concavo-convex surface of the molding surface 3 is removed from the female die 2. |
