| 摘要 |
PURPOSE:To produce R-RIM urethane resin moldings with flat painted ground face by a method in which a primer layer is formed on the surface of the cavity of a mold, and R-RIM urethane resin is cast into the mold. CONSTITUTION:A releasing agent 5a is coated on the surface of the cavity of a mold 4 to form a releasing agent layer 5, and a primer raw material 6a is coated on the portion of the cavity, corresponding to a portion to be colored for molding, to form a primer layer 6. The primer layer 6 is dried, molds 4 and 7 are closed, and R-RIM urethane resin 10a is cast into the cavity 11 through an injection port 8 by an injector 9. After the resin is reacted and hardened, a molding 12 in which the base material 10 of R-RIM urethane resin is integrated with the primer layer 6 is obtained from the molds.
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