| 摘要 |
PURPOSE:To mold a sealing section accurately and positively, and to improve heat sealing properties between the flange section of a packaging vessel and a cover material by pushing a laminate between an annular projecting section and an annular recessed section and molding the annular sealing section. CONSTITUTION:A laminate 20 heated is transferred up to a vessel molding equipment 10, a cavity 15 is lifted and brought near to a plug holder 11, and the laminate 20 is pushed and held between the lower end of the plug holder 11 and the opening periphery 15b of the cavity 15. The flange section 2b of a packaging vessel 2 is molded between the lower end of the plug holder 11 and the opening periphery 15b of the cavity, and an annular sealing section 7 is molded between an annular projecting section 18 and an annular recessed section 17 at the same time. A plug 12 is lowered from the plug holder 11 side to push the laminate 20 while the top face of the laminate 20 is supplied with compressed air. The laminate 20 is closely attached along the inner surface of the opening 15a of the cavity 15 at that time, thus molding the vessel drum section 2a of the packaging vessel 2. |
