| 摘要 |
A resin multilayer molding method in which a skin material having a resin decorating layer on a surface and a core-material resin are integrally molded in a mold, includes the steps of: presetting a relationship of a glass transition point (Tgs) of the resin decorating layer of the skin material and a supply temperature (Tc) of a molten resin forming a core material to satisfy Tgs<Tc, and performing molding on a condition that a maximum temperature (Tsm) of the resin decorating layer of the skin material being molded satisfies Tsm>Tgs. Within a temperature range in which a temperature (Tcc) of the core-material resin being molded satisfies Tcc≥Tgs at the preset arbitrary time, the gap is made between the resin decorating layer of the skin material and the mold cavity face opposed to the resin decorating layer to form and retain the air insulating layer. Remarkably high-quality resin multilayer molded products can be stably supplied at low cost without impairing surface decorating performance. <IMAGE> |
