| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a double-wall-structured container of square shape made by means of a method that enables the elimination of irregularities in wall thickness. <P>SOLUTION: The method of manufacturing the double-wall-structured container of square shape includes a rotary molding method which has a step of using a molding mold 1, and comprises a first molding process which includes a step, after supplying molding materials into within the molding space of the molding mold, of performing rotary molding while heating the molding mold from within, and a second molding process including a step of performing rotary molding while heating the molding mold from outside, with the molding operation through the second molding process being started after completing the step of molding through the first molding process. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
