| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plastic bottle whose bottom is prevented from buckling even when hot filling of the content liquid is carried out and a pressure of an inside of the plastic bottle is made positive with respect to the atmospheric pressure. <P>SOLUTION: The plastic bottle 10 has: a mouth 11; a neck 12; a trunk 20; and a bottom 30. The content liquid 15 is hot-filled in the bottle 10, and liquefied gas is added to it. The bottom 30 has: a central part 31 located in the center; a plurality of petaloid legs 32 radially extending from the central part 31 to a periphery 30b; and valley parts 33. When a width of a region corresponding to grounding parts 32a of the valley parts 33 is denoted by t1, a width of a region corresponding to grounding parts 32a, of the petaloid legs 32 is denoted by t2, a length of each of the petaloid legs 32 is denoted by t3 and a diameter of the maximum diameter part of the trunk 20 is denoted by t4, relations of 0.60<t1/t2<1.90 and 0.40<t3/t4<0.65 are satisfied. <P>COPYRIGHT: (C)2012,JPO&INPIT |
