| 摘要 |
PURPOSE: To provide a method, by which a molded article having high mechanical strength and no locally scattering of mechanical strengths in the article can be obtained and which is suitable for deep forming at the manufacturing of a foamed molding out of a thermoplastic polyester resin sheet. CONSTITUTION: This manufacturing method has a process for adding an inert gas as a foaming agent to a thermoplastic polyester resin sheet, a process for bringing keep plates 3 in close contact with both the sides of the sheet 11 under the state being held in a vacuum former 1, a process for bringing a male heating mold 5 in close contact through holes provided on the keep plates 3 with the sheet 11 so as to selectively expand the portions contacting with the mold 5 of the sheet 11 and, at the same time, to vacuum-form the sheet through minute holes provided on the mold 5 and process, in which vacuumizing is stopped and a molded article 12 obtained in the previous process is separated from the mold 5 in order to cool down the article 12. |
