Preforms and method for producing preforms
AssigneeAlpla Werke Alwin Lehner GmbH & Co. KG
InventorRobert Siegl
Life of this patent
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Abstract
The invention relates to a preform for producing a plastic container in a 2-stage stretch blow molding method, said preform having a preform body that extends along a central axis and that comprises: a first end a second end that lies opposite the first end, wherein the first end is closed and a neck part with a pouring opening adjoins the second end; and an inner wall that delimits an interior of the preform. Along a length of at least 30 mm of the interior, every point of the inner wall is at a distance of less than 3.5 mm from the central axis. Also disclosed are a suitable method and a device for producing such a preform.
Claims14
A preform for producing a plastic container in a two-step injection stretch blow molding process, comprising:
- a preform body extending along a central axis thereof and having a first end and a second end opposite the first end, the first end being closed by a preform bottom;
- a neck part having a pour opening connected to the second end of the preform body;
- and
- a wall of the preform defining an inner surface bordering an interior space of the preform, each point on the inner surface of the wall being less than 3.5 mm away from the central axis for a length of at least 30 mm along the central axis.
Dependencies are inferred from the claim text.