| 摘要 |
PURPOSE:To change the thickness dimensions of a skin layer resin through sandwich molding by temperature control, and to give the permeation concentration of a core layer resin material a dense change by forming a linear region or a surface-shaped region different in temperature from a peripheral mold surface to one part of an inner wall surface facing a cavity. CONSTITUTION:A skin layer resin material A is injected into a cavity 32a. A core layer resin material B is injected into the cavity 32a. When the temperature T1 of a heater 40a for a mold member 32A is set at 120 deg.C, the temperature T2 of a heater 40b at 130 deg.C and the temperature T3 of a heater 40c at 140 deg.C at that time, the cooling of the skin layer resin material A is made slower than a mold member 32B because the temperature T3 of a mold member 32C is higher than that T2 of the mold member 32B. Accordingly, thickness dimensions t5 in the mold member 32C of the skin layer resin material A extruded by the core layer resin material B is made thinner than those of the skin layer resin material in a mold member 32B section. |
