Plastic container with tension band geometry at the base region

A plastic container comprising a base region, a base body adjoining such base region in the longitudinal direction of the plastic container, and a mouth region adjoining such base body at least indirectly in the longitudinal direction and having a container mouth, wherein the base region has at least three supporting feet, wherein at least one groove with a groove base extending in the circumferential direction over a circumferential angle is arranged between two supporting feet, wherein the groove base acts as a tension band, wherein the container is designed in one piece,

• wherein
• the groove base has a central tension band region in which a wall of the container is inwardly bulged and which is arranged in the circumferential direction between two lateral tension band regions, wherein the groove base is designed in a cross-section perpendicular to the longitudinal direction in the central tension band region according to a first curvature property and is designed in the two lateral tension band regions according to a second curvature property, which is different from the first curvature property, wherein a tension band serves to transfer forces acting upon a base center point or a base center to a side wall of the plastic container via the tension band, wherein the groove and the groove base extend over at least 80% of an arc length of a line starting from an injection point and/or a central region formed from there on a base wall in a radial direction outwardly to the base body, wherein a ratio of an amount of curvature of the groove base in the central tension band region to an amount of curvature of the groove base in the lateral tension band region is greater than 2.