PLASTIC BOTTLE AND BEVERAGE PRODUCT

To provide a plastic bottle that restricts the deformation of the bottom part following the pressure buildup inside the bottle and has an excellent appearance aesthetic property.SOLUTION: The plastic bottle includes: a mouth; a shoulder that continues to the mouth; a trunk that continues to the shoulder; and a bottom part that continues to the trunk. The cross-sectional shape along the circumferential direction of the trunk is approximately circular. The bottom part includes: an approximately circular ground part that continues to the trunk; a bottom wall part that continues to the inner peripheral part of the ground part and extends toward the inside of the plastic bottle; and a concaved bottom part that continues to the bottom wall part and recesses toward the inside of the plastic bottle. The plastic bottle has a length along the bottle axis that is orthogonal to the horizontal surface that runs in the center of the bottom part when the plastic bottle stands on the horizontal surface, and the ratio between the length between the horizontal surface and the concaved bottom part and the diameter of the inner peripheral edge part of the ground part is 1:1.51 to 3.91.SELECTED DRAWING: Figure 1 【課題】ボトル内部の圧力上昇に伴う底部の変形が生じるのを抑制できるとともに、外観美粧性に優れたプラスチックボトルを提供する。【解決手段】口部、当該口部に連続する肩部、当該肩部に連続する胴部、及び当該胴部に連続する底部を備えるプラスチックボトルであって、胴部の周方向に沿った断面形状が、略円形状であり、底部は、胴部に連続する略円環形状の接地部と、接地部の内周縁部に連続しプラスチックボトルの内部に向かって延びる底壁部と、底壁部に連続しプラスチックボトルの内部に向かって凹む凹状底部とを含み、プラスチックボトルを水平面に立設させたときに、底部の中心を通る水平面に直交するボトル軸に沿った長さであって、水平面と凹状底部との間の長さと、接地部の内周縁部の直径との比が、１：１．５１～３．９１である。【選択図】図１