Two heads in one corona treating unit
A
Dyne Technology product story
Edited by the Engineeringtalk editorial team
Mar 22, 2006
Corona treating unit is a lightweight machine that makes it possible to connect two treating heads to the same generator, and control them separately.
Dyne Technology has launched a Tantec high-frequency spot generator - the Spottec 3D treater - in the UK.
The corona treating unit is a lightweight machine that makes it possible to connect two treating heads to the same generator.
If two treating heads are connected, it is possible to control them separately.
It creates a high-voltage, high-frequency corona discharge to treat the surface of 3D moulded or extruded plastic parts, profiles, pipes, cables and containers before coating or printing.
The purpose of corona surface treatment of polymer-based materials is to increase surface wettability through electrical discharge.
The low surface energy of polymer-based substrates often leads to poor adhesion of inks, glues and coatings.
To obtain optimum adhesion, it is necessary to increase the surface energy of the substrate to just above that of the material to be applied.
Surface treatment with corona results in good wetting of the material over the surface of the substrate and so improves adhesion.
The 3D treater creates a high voltage, low frequency corona discharge to treat the surface of 3D moulded or extruded plastic parts, profiles, webs and containers.
An airflow presses the discharge towards the substrate to be treated and a counter electrode is not necessary.
The electrical discharge creates the necessary functional polar groups on the polymer surface, which promotes adhesion and wettability to printing inks and adhesives.
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