B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 49/58 (2006.01) B29C 49/48 (2006.01) B29C 49/06 (2006.01) B29C 49/12 (2006.01) B29C 49/62 (2006.01)
Patent
CA 2470661
The invention concerns an installation for blow moulding thermoplastic polymer containers, comprising a blowing mould consisting of two portions (2) capable of being assembled and blowing means with bell-type nozzle (11) pressed in sealed manner against a front mould surface (F) mounted on the neck (9) of a blank (7) to be blow moulded; leaking means (21, 24) with relatively large cross-section extend from one contact surface (20) of at least one mould portion (2) up to the outside of the mould beyond the support (13) of the bell (11) of the nozzle (12) on the surface (F); thus the high pressure blow moulding fluid which can penetrate through an interstice (14) between the mould portions (2) which tend to be spaced apart from each other is at least mostly evacuated outside.
Installation de soufflage de récipients en polymère thermoplastique, comportant un moule (1) de soufflage en deux portions (2) accolables et des moyens de soufflage à tuyère cloche (11) en appui frontal étanche contre une face (F) du moule en coiffant le col (9) d'une ébauche (7) à souffler ; des moyens de fuite (21, 24) de relativement grande section s'étendent à partir d'une face (20) de contact d'au moins une portion (2) de moule jusqu'à l'extérieur du moule au-delà de l'appui (13) de la cloche (11) de la tuyère (12) sur la face (F) ; ainsi le fluide de soufflage sous haute pression qui peut pénétrer par un interstice (14) entre les portions (2) de moule tendant à s'écarter l'une de l'autre est évacué au moins en majeure partie vers l'extérieur.
Goudreau Gage Dubuc
Sidel
LandOfFree
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