Plastic container
AssigneeMauser-Werke GmbH
InventorDetlev WEYRAUCH
Life of this patent
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Abstract
The present invention relates to a container (10) which is produced in a blow molding process and is made of thermoplastic material—preferably a bung drum—having a welded-on bung connector, prefabricated in an injection molding process and having an internal thread, for the storage and transport of liquid or free-flowing contents. In order to eliminate disadvantageous material distortion in blow-molded containers as a result of relatively long cooling times of thick locations, e.g. at threaded bungs and flash seams, according to the invention formed in the top (30) of the container (10) is a shortened welded bung connector (32), onto which a solid threaded welding head (12), prefabricated in an injection molding process and having an internal thread (20), is welded.
Claims8
-8. (canceled)
A container made of thermoplastic material and produced in a blow molding process for the storage and transport of liquid or free-flowing contents, said container comprising:
- a shortened welded bung connector formed in the blow molding process on a top of the container and defining an opening in the top, said shortened welded bung connector having an obliquely upward facing first annular welding surface;
- and
- a bung connector part, prefabricated in an injection molding process and formed as an internally threaded, solid welding head, said solid welding head having an obliquely downward facing second annular welding surface complementary to the first annular welding surface,
- said first and second annular welding surfaces fixedly and non-detachably materially bonded to one another,
- said first and second annular welding surface each having a circular inner edge and a circular outer edge, wherein in an upright position of the container, said outer edges are situated above said inner edges.
Dependencies are inferred from the claim text.