| 摘要 |
<p>Disclosed is a plastic bottle (10) comprising a mouth part (11), a shoulder part (12), a body part (20) and a bottom part (30). The body part (20) comprises a constricted region (23) which includes an upper constricted region (24) and a lower constricted region (26) which is linked to the upper constricted region (24) by way of a small-diameter annular line (25). The upper constricted region (24) and the lower constricted region (26) both comprise a large number of planar triangular panels (24a, 24b, 26a, 26b), and therefore it is possible to suppress changes in the overall height of the plastic bottle (10) and the maximum diameter of the body part (20) when the inside of the plastic bottle (10) is subjected to positive pressure.</p> |
