B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 49/58 (2006.01) B29C 33/30 (2006.01)
Patent
CA 2570427
The invention concerns a blow-molding or stretch-blow molding plant for making containers from thermoplastic polymer blanks, in particular PET, comprising a blowing bell-nozzle (18) for blowing a pressurized fluid into a blank (9) arranged in a cavity (5) of a mold (1), the nozzle having one end adapted to be sealingly supported in front against a support plate provided in one surface (6) of the mold (1) capping the neck (8) of the blank (9); the support plate is ring-shaped (25) having an outline of similar shape as that of the outline of the end of the nozzle (18), the ring being engaged in a gutter (24) which is hollowed out in the surface of the mould (1) and which surrounds spaced apart the opening (7) through which the neck (8) of the blank (9) passes.
Installation de soufflage ou d~étirage-soufflage pour la fabrication de récipients à partir d~ébauches en polymère thermoplastique, notamment en PET, comportant une tuyère-cloche (18) de soufflage pour souffler un fluide sous pression dans une ébauche (9) disposée dans une cavité (5) d~un moule (1), la tuyère (18) ayant son extrémité propre à être en appui frontal étanche contre une plaque d~appui prévue dans une face (6) du moule (1) en coiffant le col (8) de l~ébauche (9) ; la plaque d~appui est conformée en bague (25) présentant un contour de même forme que celle du contour de l~extrémité de la tuyère (18), la bague étant engagée dans une gouttière (24) qui est creusée dans la face (6) du moule (1) et qui entoure à distance l~ouverture (7) de passage du col (8) de l~ébauche (9).
Goudreau Gage Dubuc
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