Plastic container with heat-stable ground

Plastic container (1) with a mouth (12) through which a liquid can be removed to the container, with a in a longitudinal direction (L) at this mouth adjacent (12) the base body (14) and an on this base body (14) subsequent bottom portion (2), wherein the bottom portion (2) has at least three feet (4) and at least three grooves (6) are formed between these legs, said grooves (6) each comprise at least in the radial direction (R) having and extending groove bottom (62) a wall portion (64) extending from this groove bottom (62) at least also to a stand portion (20a, 20b, 20c) extending one to this groove bottom (62) adjacent to the stand, wherein the receptacle is integrally formed and the bottom portion (2) comprises in a radial direction (R) relative to the inner longitudinal direction (L) injection point (18). According to the invention one along the bottom portion (2) formed geometric bottom line (BL) which is a circular line in a projection along the longitudinal direction (L) around the injection point (18) is formed and extending from a projection portion (20a) fully to this level portion (20a) extends over at least one groove bottom (62) of time, in the region of the groove bottom (62) has a larger radius of curvature than in the two laterally adjacent to this groove bottom (62) lying portions (BLa, BLb) of the bottom line.