| 摘要 |
<p>PURPOSE:To provide a biaxially oriented blow molding vessel having a structure in which a shape is not simply deformed. CONSTITUTION:A bottle 10 having a sectional shape of different lateral and longitudinal lengths has continuous ribs 26 provided at a chamfered part 16 disposed at intersections between an inner wall of a lateral side 12 corresponding to a narrow wall and sides. Thus, when the longitudinal side corresponding to the narrow wall tends to be expanded, a bending rigidity is enhanced by the ribs 26 disposed at the chamfered part, thereby preventing expansion of the narrow wall 12.</p> |
