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.
申请公布号
CA2560662(C)
申请公布日期
2013.01.22
申请号
CA20052560662
申请日期
2005.03.24
申请人
S.I.P.A. SOCIETA INDUSTRIALIZZAZIONE PROGETTAZIONE E AUTOMAZIONE S.P.A.