| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a plastic bottle which can prevent buckling of the bottom even when a hot content liquid is filled and the inside of the plastic bottle is put in a positive pressure state. <P>SOLUTION: The plastic bottle 10 includes a mouth portion 11, a neck portion 12, a trunk portion 20, and a bottom part 30. The bottom part 30 has a petaloid shape having a central part 31 located at the center thereof and a plurality of petaloid legs 32 radially extending from the central part 31 to a peripheral edge part 30b. The central part 31 has an annular surface 34 and a recessed section 35 recessed inward from the annular surface 34 and the hot content liquid 15 is filled into the bottle 10 and a liquefied gas is added thereinto. Consequently, buckling of the bottom part 30 can be prevented even when the pressure in the plastic bottle 10 has positive pressure. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
