| 摘要 |
<p>PURPOSE:To obtain a bottle wherein a deformed panel wall having a large deformation amount of caving and swelling is obtained without dropping buckling strength, an amount for absorbing a change in internal pressure is large, buckling strength is high and appearance does not deteriorate. CONSTITUTION:Vertical rib strings 6 in form of vertical protruding string are made to protrude in a bent shape at both ends of a deformed panel wall 5 caved on a body 2 of a biaxially oriented blow-molded bottle 1, the entire deformed panel wall 5 is displaced by caving and swelling by stretch-deforming the vertical rib strings 6 to obtain a large amount for absorbing a change in pressure, while the vertical rib strings 6 function as reinforcing ribs to improve buckling strength. Further the vertical rib strings 6 are used to hide a caved form of the deformed panel wall 5 to improve appearance.</p> |
