University of Erlangen-Nürnberg: Robust process chain by means of in-line plasma
Source: University of Erlangen-NürnbergIn-line plasma production cell: Production of peel-resistant plastic-plastic composites
In-line activation of plastic and metal surfaces in multicomponent
injection moulding by means of Openair® Plasma allows integral composite
bonding of plastic-plastic or plastic-metal combinations which hitherto
had been incompatible or only slightly compatible for adhesion
purposes. In the case of mated pairs which in principle are already
compatible with one another the power of adhesion may be further
increased and high robustness to external influences is also found.
The compact structure of the head of the Openair® Plasma jet allows its
adaptation to a six-axis robot so that selective surface treatment of
the bonding area can be carried out later with the injection mould open
and under a normal atmosphere. The six-axis robot affords great degrees
of freedom in movement which can be exploited with flexible moving lines
for plasma pretreatment. Integration within the process chain ensures a
continuous, robust and reliable sequence of operations offering
advantages for novel part designs and opportunities for savings in mould
and process tchnology.
Thanks to the use of the plasma technology supplied by the Plasmatreat
company it has been possible in the course of our current projects, such
as by way of example the special research area SFB 396 "Robust,
shortened process chains for flat lightweight parts" (http://www.sfb396.uni-erlangen.de) or the "Plasma" Industry Group (http://www.inlineplasma.de), to bond initially incompatible materials simply and cleanly to one another by means of this integrated production process.
Prof. Dr.-Ing. D. Drummer
Professor
Department of Plastics Technology (Lehrstuhl für Kunststofftechnik LKT)
University of Erlangen-Nürnberg
Professor
Department of Plastics Technology (Lehrstuhl für Kunststofftechnik LKT)
University of Erlangen-Nürnberg
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