FAQ – all you need to know about surface treatment
One way to modify the physical and chemical properties of metals is plasma etching. The technique is particularly popular in the digital world for the…
Surface treatment of plastic is not an uncommon procedure in the industrial world. Innumerable plastics are treated each and every day for improved wettability…
Tantec Plasma Treatment equipment has many different applications. As an example, in the medical industry, we have solved many problems with our machines…
What is corona surface treatment?
Corona treatment is a high-frequency, high-voltage electrical discharge. The discharge is generated between an electrode and a counter electrode. The corona discharge has such a powerful impact on the substance surface that the molecular structure changes in a way that improves the surface wettability.
Is it possible to treat metal surfaces?
How can the improved adhesion be measured?
The improved adhesion strength can easily be measured either through contact-angle measurement or by using dyne inks.
What does dyne level / mN/m mean?
The dyne level reflects the surface wettability – the higher the dyne level, the better the wettability/adhesion.
Read more about Dyne test.
Can Tantec equipment be built into my existing production line or is it always a batch process?
Does line speed affect the results of corona treatment?
Yes, the higher line speed, or the higher throughput of products, the more Corona power is required. Tantec can easily calculate the need of treatment power, and specify the number of electrodes and size of Corona Generator.
Is any extraction required from a Corona treater?
Yes, ozone is formed as a by-product of the corona-discharge process. It is an allotropic form of oxygen, and exists at room temperature as an unstable gas with a sharp, characteristic odour. It can usually be detected by its odour at concentrations as low as 0.01 to 0.05 ppm, which are below the permissible exposure level of 0.1ppm. Tantec supply a standard range of ozone filters with flow sensors to control extraction air flows, and Tantec guarantee the ozone level in the working area is not exceeding the permissible exposure level.
Does Tantec offer after-sale services?
Tantec offer start-up of equipment and training of operator personnel at the customers site, and Tantec technicians are available for annual maintenance service on supplied equipment.
In this section you will find technical articles about our plasma and corona technology.
We understand, that it can be difficult to understand what plasma and corona exactly are, how the technology works, and to which materials it can apply. The Tantec knowledgebase category, (or Frequently Asked Questions/FAQ), contains technical articles about the technology and the processes.
Many of the articles we present here, are a result of the questions we receive through our website or from our clients around the world, who we meet at exhibitions or at our technology seminars. A question we often encounter, is how plasma treatment can work as an etchant. Please read more about that in our article about Plasma etching.
We hope you find answers to your questions here. If not, do not hesitate to contact us, and we will provide you with an answer as soon as possible.
Reasons to surface treat materials
It is often necessary to bond plastic materials to metals or other plastic materials or simply print on a plastic surface. In order to successfully accomplish this, the liquid adhesive, or ink should be able to wet the surface of the material. Wettability depends on one specific property of the surface: Surface Energy, often referred to as Surface Tension.
Tantec develops, manufactures and markets innovative Corona Treaters and Plasma Treaters to improve adhesion properties on plastics and metals, by raising this surface energy.
When the surface is treated the gas starts to flow at a low pressure. All this happens before any energy (electrical power) is applied. Plasma treatment at low temperature can easily process materials that are heat sensitive. These types of plasma is sometimes referred to as `cold plasma´, which means cold plasma treatment.