| 摘要 |
<p>Nozzle for the injection of molten plastics, comprising a rear central portion (1) terminating with a plane surface (6) in its central zone, an outer annular element (5) terminating with a corresponding plane surface (7) on its rear side, wherein the terminal plane surface (6) of said central zone is situated in a more backward position with respect to the terminal plane surface (7) of said annular element, which is provided rearwards with a first annular groove (12) in the shape of an acute angle between the outer edge of the rear portion and the outer edge of the annular element. The latter is further provided forwards with a second annular groove (8) arranged at an acute angle inside the outer front edge of said rear portion. Said two annular grooves (12, 8) are opposing each other and spreading apart from each other, and the respective angles come substantially up on the side of each other at the same height of the nozzle.</p> |
