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Plasma Treatment

Home Our Offering Plasma Treatment

Plasma Treatment

For many years, Corona has been the dominant and most economical method for surface treatment, remaining effective in over 95% of cases.

However, with the emergence of advanced and intricate substrates, the remaining 5% of applications pose unique challenges that are hard to address. These issues often require costly solutions involving harmful components. In light of this, the use of plasma surface treatment has gained prominence to cater to the specialized needs of these complex substrates, ensuring efficiency and cost-effectiveness while avoiding harmful elements.

Vetaphone has developed a method of surface treatment that offers the fine-tuning required by the chemical make-up of these materials. It is cost effective and environmentally-friendly, and offers a real alternative to using the harmful components that are otherwise needed to do the job.

It is called Plasma, and where Corona treatment is a Dielectric Barrier Discharge (DBD) carried out in ambient air (blue groups in the illustration below), Plasma needs a controlled atmosphere because it uses small quantities of dopant gas for grafting (red groups in the illustration below). This allows Plasma to offer a different functionality to Corona and provide a range of surface capabilities.

plasma surface treatment process

Creation of nitrogen groups, depending on the composition of the nitrogen based atmosphere

The grafting takes place in a 100% controlled nitrogen-based atmosphere that creates nitrogen-based groups on the surface of the substrate. By mixing with other gases, known as dopants, other groups are created and the quantity of the desired Amine, Amide, and Imide groups can be controlled accurately.

VP-Plasma-changes-graphic

The plasma changes

This is how the surface chemistry can be tuned to achieve high dyne levels that provide for good adhesion so that chemical bonds can be made between the surface and the ink, lacquer or adhesive that is being applied. Because of the greater degree of control provided by Plasma, it is able to provide higher dyne levels that decline slower across a range of more difficult substrates

Plasma treatment is known for its gentler approach compared to Corona, offering a more uniform surface modification. This process exerts less heat on the substrate, granting operators the freedom to precisely adjust the surface chemistry to meet specific needs. As a result, plasma treaters are frequently regarded as a viable alternative to Corona and liquid primer, accomplishing the task in a single pass.

What makes Plasma unique is the control level that it offers, which is missing on older Plasma systems. Whether you are considering full-scale production or a lab-sized testing system, Plasma offers complete control of the process and the ability to create a variety of different surface conditions.

plasma treating

The chemistry on the surface of the treated material can be tuned in any direction required, offering unique control of the surface treatment.

Capable of being integrated in any roll to roll machine, Plasma is an eco-efficient process that reduces cost, lowers energy consumption, and has a reduced environmental impact. It is compatible with flexo (CI and inline), rotogravure, digital and hybrid printing lines using water-based or UV ins and lacquers, and laminating lines. It also has applications in specialised markets such as printed electronics, photovoltaics, speciality films, and extrusion.

Proof of concept:

Since the introduction of our industrial Atmospheric Plasma Systems in 2010, we have supplied more than 60 units and have years of experience in achieving excellent results based on our customers’ needs.

However, we also know that due to the complex and diverse nature of your requirements, proof of concept is the first step before deciding to invest in an Plasma system.

For this purpose we have a test facility which contains a completely new installed test line for Plasma surface treatment process, and our expert team of qualified engineers have advanced tools for analysis and control of surfaces.

Plasma has been successfully tested on a variety of substrates including: PET, PP, BOPP, PA, PE, PVC, PVDC, Printed Polymers and Fluorinated Polymers (PVF, PVDF, ECTFE, ETFE, FEP,and PTFE). If the substrate you are looking to treat is not on this list it is still very likely that Plasma will be successful, so please contact us to arrange a test in our lab facility.

Interested in Plasma Surface treatment?

Get a quote today

Related Pages

  • Plasma Treatment
  • Corona Treatment
  • Knowledge Sharing

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