| 摘要 |
PROBLEM TO BE SOLVED: To provide a multilayer molding having a decreased weight more than the conventional molding using polyethylene naphthalate resin (PEN), having excellent coloring stain resistance on a surface and excellent resistance to boiling deformation, and causing no layer separation between two layers, and a method for manufacturing the multilayer molding.SOLUTION: The multilayer molding is so formed that an outer molding comprising a composition comprising PEN, and a resin selected from aromatic polysulfone resin and thermoplastic polyester resin excluding PEN is laminated on the outside of an inner molding obtained by molding a PEN non-oriented sheet. The method for manufacturing multi-layer tableware includes the steps of: obtaining an inner molding by molding a PEN non-oriented sheet by a vacuum molding method or an air pressure molding; and installing the obtained inner molding in a metallic mold, and injection molding thereto a composition comprising PEN, and the resin selected from the aromatic polysulfone resin and the thermoplastic polyester resin excluding PEN so as to laminate an outer molding. |
