| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the problem that, when a high-temperature liquid is filled into a conventional container formed by the blow molding of a thermoplastic resin, the resin is softened by the high temperature, and a strength weak point of a fusion-bonded part of a pinch-off portion that is a fate of the blow-molded product is exposed, and a very dangerous accident of ejection of a high-temperature liquid from a torn part of the pinch-off portion by the internal pressure caused by the self weight of the liquid cannot be prevented perfectly. <P>SOLUTION: Each flange having the length of≥3/4 of the total length of the parting line is provided on the side and the lower side of a container in the installed state of the container along the parting line of a container forming die, and a plurality of groove-like recesses are formed in a range of≥1/2 of the periphery of the container substantially parallel to the horizontal plane of the container in the installed state and except partially blocked parts by the interference with the flanges 3. Thus, ejection of high-temperature liquid is completely prevented thereby. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
