| 摘要 |
To provide an injection-, blow-, or compression-molding method capable of providing homogeneous surface without any patch by dyeing or reforming a surface of resin surface in a die concurrently to molding for giving functionality to the molded body, in injection-, blow-, or compression molding, after thermoplastic resin is filled in a die cavity, after blow-molding, or after compression molding, mixture gas of carbon dioxide gas and a dye, or mixture gas of carbon dioxide gas and a reformer is injected between the resin and the die for forming a clearance, and pressure of the mixture gas is kept at a constant level. Then the mixture gas is dissolved in molded face for softening the molded face, and then a pressure is loaded to again contact the molded face to the cavity face tightly. Then the mixture gas in the clearance is exhausted and is cooled, and then the molded product is taken out. With the processes as described above, a dye-permeated layer or a reformer-permeated layer is formed on a surface of the molded product, and with this operation a surface of the molded product is dyed or reformed.
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