Corona Treaters
for Converters
Corona treatment raises the surface energy of substrates. However due to migration of additives to the substrates surface during storage, the corona effect can be reduced within hours, weeks or months, depending on storage conditions. When printing one must ensure that the dyne level of the substrate is high enough to promote adhesion of the inks onto the substrate, otherwise this can lead to disastrous consequences. To ensure this adhesion, it is highly recommended that flexographic and rotogravure printing presses have a corona treater installed.
Likewise, in the lamination process the surface energy of one substrate must be higher than the other substrate to promote adhesion and avoid delamination.
Lamination & Printing Corona treatment raises the surface energy of substrates. However due to migration of additives to the substrates surface during storage, the corona effect can be reduced within hours, weeks or months, depending on storage conditions. When printing one must ensure that the dyne level of the substrate is high enough to promote adhesion of the inks onto the substrate, otherwise this can lead to disastrous consequences. To ensure this adhesion, it is highly recommended that flexographic & rotogravure printing presses have a corona treater installed.
- Universal corona treatment systems, for conductive and non-conductive substrates
- Ceramic Electrodes, unique triple treat, increased corona dwell time.
- Easy to clean and maintain electrode cartridges, rotate 180 degrees without loss of HT connection.
- Aluminium or ceramic coated base rolls for enhanced treatment
- Widths to 3500mm and speeds to 1500m/min
- Easy, removable electrode cartridges
- Calibrated direct action, cross-web air gap adjustors for uniform treatment
- Open style construction, ozone extraction at source
Extrusion Coating The manufacture of packaging laminates by means of the extrusion coating or laminating process will today almost certainly involve a corona treatment system, as well as possibly an Ozone generator.
Within the extrusion coating process a corona treatment system is used in the pre-treatment of the substrate prior to laminating/coating with the extrudate or melt curtain. The combined substrate and extrudate then pass over the chill roll. This laminated or coated surface, is usually also treated with a post-corona treater to make this surface more receptive for printing or further lamination.
Corona Supplies offer bespoke corona treatment systems for use on a variety of substrates used in extrusion coating, both pre treatment and post treatment on a variety of materials including PP, PE, EVA, Surlyn and paper/board.
Corona Supplies also offers ozone generators for use on the extrudate, which have many advantages on the extrusion coating process.
Narrow Web Corona Supplies manufacture compact yet powerful corona treaters for use in narrow web print & finishing lines. Our corona treaters can be used to treat both conductive and non conductive films.
Corona Supplied cantilevered corona system is easily installed on all of the major presses. Our corona treaters have been installed on: AB Graphic International, HP Indigo, Nilpeter, Mark Andy, Comco, Edale, KPG, Bobst, Omet, MPS, Aquaflex, Labelman, Xeikon etc.
- Cantilever design from single back-plate
- Uniform mounting to suit most types of press.
- Multiple Ceramic electrodes for good corona dwell
- Single, Double or Triple treat available
- Easy access for web threading and cleaning
- Film path rollers fitted as standard
- Pneumatic open/close option
- “Set and forget” air gap adjustment
- HT cable and ozone removal at back of treater for more ergonomic design
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