| 摘要 |
<p>PURPOSE:To obtain a tall vessel main body made of plastic. CONSTITUTION:Parison 25 is extruded between halved molds 22a, 22b through a die 21 of an extruding machine 20. The parison 25 is blow-molded within the molds 22a, 22b and a blow-molded product 26 possessing a protrusion 27 projecting outward in a radial direction is made. The protrusion 27 of the blow- molded product 26 is cut off along a horizontal section 30, an opening end part 32 is pressed between a press bottom force 28 and press top force 29 and a vessel main body 14 possessing a flange part 15 is obtained.</p> |
