PURPOSE: To subject an injection molded article to in-mold coating in a simple manner by a method wherein after a melt resin is loaded in a short molding state in a cavity formed by a stationary mold and a movable mold, a coating material is injected, and a high-pressure gas is injected. ;CONSTITUTION: After a movable mold 3 is clamped to a stationary mold 2, a melt resin is loaded in a short molding state in a cavity C from an injection nozzle through a first sprue 4, a runner 5, a second sprue 6, and a gate 7. Next, a coating material is injected into a gap between a cavity surface and a resin surface from an injection port 8. After that, a high-pressure gas is supplied from a gas injection port 9a to the second sprue 6. In this manner, a molded article having a hollow part is obtained, and the full surface of the obtained molded article is coated with the coating material.;COPYRIGHT: (C)1994,JPO&Japio
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