| 摘要 |
Bottom of hollow ware obtained by the blow molding or stretch-blow molding of a thermoplastic preform, this bottom having a transverse bearing surface and, on either side of this transverse bearing surface, a transverse external edge (7) and a concave internal wall with a transverse central portion (11) containing a disc (12) of material having a low crystallinity, this bottom including reinforcing ribs (1) having an outer edge (13) coming close to the transverse external edge (7) but without reaching this transverse external edge (7), these reinforcing ribs (1) hang an inner edge (14) coming close to the transverse central portion (11), but without reaching this transverse central portion (11), the transverse bearing surface being formed from segments (6a, 6b, 6c, 6d, 6e) interrupted by the reinforcing ribs (1), this hollow ware bottom (4) further including notches (2), the distal end portion (24) of which comes close to but does not reach the external edge (7) of the bottom, the proximal end portion (25) of the notches (2) being tangential with the transverse bearing surface but not opening into this transverse bearing surface. |
