Plastic liner with inner lining

Abstract

The present invention relates to a rigid plastic liner (12) made of thermoplastics for a pallet container (10) or a similar large-volume container for storing and transporting liquid or fluid goods, having a flexible inner lining (28) made of a thin-walled plastic or composite film inserted into the rigid plastic liner (12). For filling and emptying the container through the bottom thereof, the thin-walled inner lining (28) has at least one bottom filling and emptying pipe (42) permanently welded at the front into a corresponding bottom filling and emptying pipe (32) of the rigid plastic liner(12). For filling the container through the top and emptying it through the bottom, the rigid plastic liner (12) and the thin-walled inner lining (28) can also be provided each with a top filling pipe, and then the top filling pipe (44) of the thin-walled inner lining (28) is likewise permanently welded into the filling pipe (30) of the rigid plastic liner (12). Through application of a vacuum, the thin-walled inner lining (28) inserted into the rigid plastic liner (12) lies in the mounted end state over its entire surface against the inner surface of the rigid plastic liner (12), and is immovably fixed as if by glue to the inner surface, in particular to the head of the liner, both in the empty, non-filed state and in the filled state of the rigid plastic liner (12).

Description

technical field [0001] The invention relates to a lined, thin-walled rigid plastics inner container for pallet storage or similar large-volume enclosures for storing and transporting liquid or flowable fillers Container (Umbehälter), a plastic inner container comprising two longer side walls, a shorter rear wall, a shorter front wall, an upper bottom with a In the center of the front wall there is a lower discharge area with a protective casing pointing inwards into the plastic inner container for the protected recessed arrangement of the closable discharge fittings body-shaped molding, and wherein a flexible inner liner made of thin-walled plastic film or composite film is introduced into the rigid plastic inner container, said inner liner being connected at the top to the feed connection or / and Connects underneath to the discharge nipple of the discharge fitting with rigid plastic inner container. [0002] question: [0003] Pallet storage containers (commonly known under...

AI Technical Summary

Problems solved by technology

Unfortunately, composite films with high barrier properties (Barriereeigenschaft) have only very poor resistance to compression and cannot be used for many applications

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