| 摘要 |
PROBLEM TO BE SOLVED: To provide a plastic bottle which is filled with content liquid composed of carbonated beverage, and can prevent buckling of a bottom part even when inside pressure is made positive pressure.SOLUTION: The plastic bottle 10 includes a mouth portion 11, a neck portion 12, a body portion 20, and the bottom part 30. The bottom part 30 has a petaloid shape having a central part 31 located at the center, and a plurality of petaloid feet 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 portion 35 recessed inward from the annular surface 34. The plastic bottle 10 is filled with the content liquid 15 made of the carbonated beverage. Consequently, the buckling of the bottom part 30 is prevented, when the inside pressure of the plastic bottle 10 is made the positive pressure. |
