| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a preform enabling further reduction in resin amount. <P>SOLUTION: The preform 10 is constituted by a mouth portion 12 and a bottomed cylindrical preform body 14 extending from the mouth portion 12. The preform body 14 is stretched by biaxial stretching blow molding without stretching the mouth portion 12, so as to form a plastic bottle 1. The preform body 14 comprises a plurality of volume-reducing portions 50 formed at equal intervals in the circumferential direction of the preform 10, at portions which are boundaries with the mouth portion 12 and stretched by the biaxial stretching blow molding. <P>COPYRIGHT: (C)2012,JPO&INPIT |
