| 摘要 |
A blow-molding installation for manufacturing receptacles from blanks of thermoplastic polymer, said installation comprising a bell-nozzle for blowing a fluid under pressure into a blank ( 3 ) disposed in a cavity ( 2 ) of a mold ( 1 ), the end of the nozzle being in the shape of a bell ( 11 ) which is suitable, during blow-molding, for being pressed into leaktight end-to-end abutment against a wall (F) of the mold while capping the neck ( 7 ) of the blank that emerges from said wall; said installation further comprises means ( 16 <SUB>1</SUB>) for securing the nozzle to the wall of the mold by mutual attraction, which means can be activated, after the nozzle has been brought into end-to-end contact with the wall (F) of the mold without flattening a sealing gasket ( 13 ), so as to attract the nozzle ( 10 ) and the wall (F) towards each other with an attraction force greater than the repulsion force due to the pressure of the blow-molding fluid.
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