| 摘要 |
<p>PURPOSE:To provide a plastic bottle which has a sufficient rigidity for charging the contents, transporting, and making use thereof but which can be crushed flat after use. CONSTITUTION:A plastic bottle has a sufficient rigidity when the contents are charged therein and it is transported and used. In the contrary, it is can be crushed flat after it has been used. The thread 16 or the neckring 17 formed at the outer periphery of the head 11 has discontinuous parts 18, 19 which are formed at the position on two imaginary vertical sections passing through the bottle 10 center and crossing at right angles with each other. On the other hand, A recessed groove hollowed inward at the part positioned on the imaginary vertical section crossing at right angles with an external crushing force, is formed in the bottom 14.</p> |
