| 摘要 |
PROBLEM TO BE SOLVED: To simply obtain a container without retaining content liquid by sandwiching a parison between right and left molds, blow molding it, raising a mold of a bottom before resin is solidified, and embedding a gap of a peripheral edge of a bottom in a molded container with the resin. SOLUTION: A parison 4 is extruded, surrounded by left and right molds 1, 2. Further, split bottom molds 3 are disposed at lower parts of the molds 1, 2, and the parison 4 is sandwiched therebetween. When the parison 4 is sandwiched between the molds 3, a lower end of the parison 4 is simultaneously cut, its bottom is connected to be sealed. Then, compressed air is blown from an air nozzle to mold it in a shape of a container. When the shape of the container is decided to certain degree, the bottom molds are raised by a driving means, thereby raising its bottom. At this time, to eliminate formation of a gap at a peripheral edge 5c of the bottom, the molds 3 are raised before the parison is solidified, and the edge 5c is embedded with resin. Thus, when no gap is formed, content liquid is not retained. |
