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Corona Treatment Improves Print Adhesion for STERIS Healthcare



Plasma Treating Steris Healthcare

Albert Browne, part of the STERIS Healthcare Corporation who provide sterile processing equipment to the medical industry contacted Dyne Technology when looking to improve the adhesion quality of their printing ink on the sterile indicators that are widely used in hospitals throughout the UK & Ireland.

The sterile indicators are vital to the Sterility Assurance Program, their Process Control Products are in-process control check points to prevent the mix-up of processed and un-processed packs (container, pouch or wrapped tray) and enhance patient and personnel safety.

Repeatable and reliable Narrow Web Corona Treatment

The Dyne Technology engineers conducted an initial on-site assessment to better understand the problem faced by Albert Browne. The sterile indicator tabs underwent a series of tests and it became clear that the surface of the plastic material would achieve a stronger level of adhesion with Plasma Surface Activation. Plasma Surface Activation would allow the printing ink to fully wet the surface and achieve the high level of adhesion required.

Web TreaterWhen choosing Surface Activation method, it was critical for the Dyne Technology engineers to work closely with Albert Browne to ensure most efficient treatment method is selected. From this, High Frequency Corona Treating equipment was chosen as the most effective treatment method for both the part requiring treatment and the manufacturing process utilised. High Frequency Corona Treating equipment was successfully installed by Dyne Technology engineers on the current printing line for surface modification at their manufacturing facilities.

Inside a web treaterThe high frequency narrow web Corona Treating equipment system supplied by Dyne Technology is designed for the pre-treatment of conductive and non-conductive narrow webs and can treat either one or both sides of the web as well as accommodating production speeds of up to 150m per minute.  The compact design and construction enables the equipment to be mounted directly onto the treating station which completely removes the need for trailing high voltage cables.  Running from standard 230Volt, 13Amp socket outlets the corona treating equipment easily fits to new or existing production lines and presses.

 “Dyne Technology has worked very closely with us to provide a cost effective and robust solution. The treatment system installed has improved the print adhesion enormously and therefore the overall quality, reliability and performance of our Process Control Products.” – Jonathan Coleman, Deputy Manufacturing Manager at Albert Browne

Corona Treatment explained…

Question ButtonCorona Surface Activation is achieved by creating a high voltage, high frequency electrical discharge, known as Corona discharge in close proximity to the parts to be treated.  This high energy corona discharge is attracted to the material and modifies the molecular bonds on the surface. These modified bonds are now free to attach to free radicals and other particles that exist in the highly active corona discharge environment. The resulting formation of additional polar groups on the material surface have a strong chemical attraction to inks, paints, coatings, adhesives etc, the increase in surface energy significantly contributes to the bond strength that can be achieved.

Speak to a Surface Activation expert!

Call us logoInterested in finding out more about our Plasma and Corona solutions? Give the UK and Ireland’s Number One Plasma Treatment supplier, Dyne Technology. a call on +44(0) 1543 411 460 or email

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