| 摘要 |
<p>PURPOSE:To improve deformation preventing characteristics at a cylindrical part of a container. CONSTITUTION:In a square biaxial stretching blow molded container 1 comprising a mouth part 2, a shoulder part 3, a cylindrical part 4, and a bottom part 5, a panel part 4b having a concave shape which has a polygonal bottom is formed on the wall of the cylindrical part 4 and a circular or polygonal recess is formed at the corner of the panel part 4b. And further, on the wall of the part 4, a lateral rib 4a of concave shape having a circular or polygonal recess on its opposite ends is formed.</p> |
