Blow moulded containers and moulded parts consisting of synthetic material and having improved antistatic properties
AssigneeBasell Polyolefine GmbH
InventorsBernhard Springlholz, Wolfgang Rohde, Andreas Haufe
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Abstract
The present invention relates to plastic containers or moldings which have been produced by blow molding and have improved antistatic properties. The containers or moldings have an outer wall and an inner wall and contain webs of electrically conducting material running along the inner wall. The invention also relates to a process for the production of the containers or moldings and to their use.
Claims13
A plastic container or molding which has been produced by blow molding and has improved antistatic properties, comprising an outer wall and an inner wall, said inner wall having a web of electrically conductive thermoplastic material applied thereto during discharge of plastic melt from an extruder such that said web is inflated together with said plastic to form a container or molding,
- wherein said web is arranged on said inner wall crosswise in the form of a network or in parallel,
- and wherein a maximum separation between individual parallel webs is 20 mm, and
- wherein, in the case where the web is arranged in a network, a maximum coherent, non-electrically conducting grid area does not exceed a size of 100 cm2.
In a plastic container or molding having antistatic properties, the improvement comprising a web of electrically conductive thermoplastic material running along an inner wall of said container or molding,
- wherein said web is arranged on said inner wall crosswise in the form of a network or in parallel, said web being applied during discharge of plastic melt from an extruder such that said web is inflated together with said plastic to form a container or molding,
- and wherein a maximum separation between individual parallel webs is 20 mm, and
- wherein, in the case where the web is arranged in a network, a maximum coherent, non-electrically conducting grid area does not exceed a size of 100 cm2.
Dependencies are inferred from the claim text.