INJECTION DEVICE

A nozzle comprises a hollow element comprising a recess and an injection hole (6) to inject fluid plastic into a mould, a heating tip which penetrates inside the recess and forms, together with the recess itself, a holding cavity (5) into which the channels (14) run. The holding cavity (5) comprises...

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Bibliographic Details
Main Authors ZOPPAS, MATTEO, COROCHER, CARLO, GIACOMAZZI, DENIS, VENDRASCO, LUCA
Format Patent
LanguageEnglish
French
Published 29.09.2005
Edition7
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
PERFORMING OPERATIONS
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Summary:A nozzle comprises a hollow element comprising a recess and an injection hole (6) to inject fluid plastic into a mould, a heating tip which penetrates inside the recess and forms, together with the recess itself, a holding cavity (5) into which the channels (14) run. The holding cavity (5) comprises a narrow section (52) which separates the holding cavity (5) into a rear portion (51) and a front portion (50), in order to reduce or completely prevent exchanges of fluid plastic between the two areas. Une buse comprend un élément creux qui comporte un évidement et un orifice (6) d'injection servant à injecter du plastique fluide dans un moule, une pointe chauffante qui pénètre dans l'évidement et qui forme, avec l'évidement lui-même, une cavité (5) de retenue dans laquelle s'étendent les passages (14). La cavité (5) de retenue comprend une section étroite (52) qui sépare la cavité (5) de retenue en une partie arrière (51) et en une partie avant (50) afin de réduire ou d'empêcher totalement les échanges de plastique fluide entre les deux zones.
Bibliography:Application Number: WO2005EP51385