| 摘要 |
PURPOSE:To mold sandwich molded article having favorable surface form, in which layer resin covers the outer peripheral part of core layer resin, by using an injection mold having hot runner blocks. CONSTITUTION:Firstly, skin layer resin 26 is injected through first hot runner 10b in a cavity C made between molds 18 and 20. Next, by closing the resin passage between the first hot runner 10b and the cavity C, the injection of the skin layer resin 26 is brought to an end. After that, at the predetermined timing between the start and end of the injection of the skin layer resin 26, core layer resin 26 is injected through second hot runner 12b into the cavity C made between the molds 18 and 20 in order to mold a sandwich molded article. |
