| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method capable of obtaining not only a good molded article but also sufficient interfacial adhesion even in a case having a thin- walled layer, capable of obtaining a good molded article especially in such a case that a three-dimensional pattern is applied to the interface of layers and capable of obtaining a multilayered molded article also excellent in optical strain in the case of transparency and the obtained molded article. SOLUTION: A method for manufacturing a molded article having a multilayered structure wherein first, second and third layers are laminated consists of (1) a process (first process) for manufacturing a first resin molded artile by filling a first mold cavity with a thermoplastic resin to form a first layer, (2) a process (second process) arranging the first resin molded article and a resin sheet (third layer) in a second mold cavity in opposed relationship and forming the space substantially constituted of the surface of the first layer and the surface of the third layer between the first and third layers, (3) a process (third process) for filling the space with a thermoplastic resin for forming a second layer at an injection speed of 300 mm/sea or more and (4) a process (fourth process) taking out the resin molded article cooled after filling from the second mold cavity.
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