Bottom of hollow ware obtained by the blow moulding or stretch-blow moulding of a thermoplastic hollow ware preform having such a bottom

A bottom of a hollow body obtained by blowing or stretch-blowing of a preform of thermoplastic material, said bottom comprising a transverse support surface, and on either side of said transverse support surface:

• a transverse outer edge (7);
• a concave inner wall with a transverse central part (11) containing a disc (12) of material of low crystallinity, said disc corresponding to the injection point of the preform;
• said bottom comprising reinforcing ribs (1) having an outer edge (13) in proximity to the transverse outer edge (7) but without reaching said transverse outer edge (7), said reinforcing ribs (1) having an inner edge (14) in proximity to the transverse central part (11), but without reaching said transverse central part (11), wherein the transverse support surface is formed from annular sectors (6a, 6b, 6c, 6d, 6e) interrupted by the reinforcing ribs (1), said bottom of the hollow body (4) further comprising notches (2) the distal end portion (24) of which is adjacent to but does not reach the outer edge (7) of the bottom, the proximal end portion (25) of the notches (2) being tangent to the transverse support annular sectors but not opening into said transverse annular sectors.