| 摘要 |
PURPOSE:To obtain an expanded resin molding having a continuous hard resin layer on its surface by a method in which a primarily expanded resin molding formed from an expandible resin grain is compressed in molds and at least a part of the surface of the molding is melted by heating. CONSTITUTION:A female mold 1 with a slit and a male mold 2 with a slit are heated, and preliminarily expanded grains are packed from a charging port 10 into the cavity 3 and expanded by heating. After the expanded molding is cooled, the mold 1 is raised toward the direction of A and opened, the base seat 19 is moved to the direction of B by a cylinder 14, and a male mold 15 for compression is moved beneath the mold 1. The female mold 1 is lowered, the primarily expanded molding is compressed, and pressure steam is introduced into the molds to melt the surface of the primarily expanded molding.
|
