MANUFACTURING METHOD FOR IN-MOLD COATING INJECTION- MOLDED ARTICLE, AND INJECTION-MOLDED ARTICLE

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method for an in-mold coating injection- molded article wherein a coating layer being excellent in adhesion can be efficiently formed in molding dies simultaneously with the injection-molding, even for injection-molded articles with a polyolefin resin having no functional group as the major material, and in addition, an injection-molded article having a favorable appearance can be obtained.;SOLUTION: A polypropylene resin composition 8 which is molten by an injection device 7 is injected and filled in a cavity 3. Then, the polypropylene resin composition 8 is cooled and solidified, and a primary molded article 10 is obtained (b). Then, a secondary space 11 is formed between the primary molded article 10 and a movable die 1, and a gas 12 containing ozone is injected from an ozone injector 4. Thus, ozone in the gas 12 containing ozone is brought into contact with the primary molded article 10 (c). After discharging the gas 12 containing ozone (d), a coating material 13 is injected (e) into the secondary space 11 from a coating material injector 5, and the coating material 13 is hardened (f).;COPYRIGHT: (C)2002,JPO