Patent ID: 8524349

Claim:
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 ( 6 a , 6 b , 6 c , 6 d , 6 e ) 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.