| 摘要 |
<p>An injection moulded preform (1) for producing plastic containers more particularly plastic bottles in a stretch blow moulding process is described said preform having a substantially elongate preform body (2) one longitudinal end of which is closed. At the opposing longitudinal end thereof a neck section (3) provided with a pouring opening (4) is connected to the preform body (2) the outer wall (5) of which neck section has fixing means (6) for fixing a sealing part equipped with corresponding engaging means in a form locking manner. The neck section (3) has at least one narrowing (7) running circumferentially at least in certain regions with a wall thickness (t) of 0.4 mm to 0.8 mm. The injection moulded plastic material is present at least at the at least one narrowing (7) in a precision oriented at least partly crystalline state produced by an injection moulding process.</p> |
