How does Corona surface treatment work?
A corona treatment is used to increase a material's surface tension in an effective way. By treating the material with a high frequency corona discharge, its surface becomes much more receptive to adhesives, inks and coatings.
How long does corona surface treatment last?
six monthsWhen treating paper with Corona you will get the benefits of cleaning the surface and removing any unwanted paper fibres that could create pin holes during the coating process. The treatment level lasts for a minimum of six months.
What is corona treatment plastic?
Corona treatment is used to increase the surface energy of plastic and other materials for improved adhesion of inks, adhesives, and coatings. Corona treated materials feature higher printing and coating quality than materials that do not undergo this treatment.Jul 26, 2021
What is plasma surface treatment?
Plasma surface treatment is a process that raises the surface energy of many materials so as to improve the bonding characteristics. One form of plasma treatment is also commonly known as a corona treatment, which was invented by Danish engineer Verner Eisby in the 1950s.
Why corona treatment is used?
A corona treating system is designed to increase the surface energy of plastic films, foils and paper in order to allow improved wettability and adhesion of inks, coatings and adhesives. As a result, the materials treated will demonstrate improved printing and coating quality, and stronger lamination strength.
What is the difference between Corona and plasma treatment?
Plasma systems are used when corona treatment, which again ionizes only air, are unable to produce the desired treatment results. In some cases, plasma treatment produces higher and longer lasting surface effects than corona, but the benefits must offset the additional equipment investment and operational costs.
How do you get corona discharge?
The corona discharge is created when the high voltage and frequency electrical potential is applied to an electrode (ex. wire electrode or spring tip electrode). The corona discharge ionizes nearby atmosphere and when this is applied directly to the material it increases the surface tension of the material.Nov 29, 2021
Is corona discharge harmful to humans?
These gases are corrosive and can degrade and embrittle nearby materials, and are also toxic to humans and the environment. Corona discharges can often be suppressed by improved insulation, corona rings, and making high voltage electrodes in smooth rounded shapes.
How does corona discharge occur?
Corona discharge can cause an audible hissing or cracking noise as it ionizes the air around the conductors. This is common in high voltage electric power transmission lines. The corona effect can also produce a violet glow, production of ozone gas around the conductor, radio interference, and electrical power loss.Oct 26, 2020
What is the advantage of plasma surface treatment?
Plasma surface treatments show distinct advantages, because they are able to modify the surface properties of inert materials, sometimes with environment friendly devices. For fabrics, cold plasma treatments require the development of reliable and large systems.Jan 24, 2008
How long does plasma surface treatment last?
approximately 48 hoursMost plasma treatments last approximately 48 hours if the treated surface remains clean and dry. This time can vary depending on the treatment performed and the conditions parts are stored in.
How many times can the patient treat with plasmapheresis?
A: There is no set number of plasma exchanges performed, although typically patients receive between three and seven exchanges, each of which takes 2-4 hours. The number of treatments can be guided by the clinical recovery, or sometimes a preset number of exchanges are performed.
What is corona treatment?
If you have ever faced adhesion problems in your productions, a corona treatment might be the right solution for you. A corona treatment is used to...
How does corona treatment work?
The low surface energy of certain materials often leads to poor adhesion of inks, glues, and coatings which by nature present significantly high su...
What types of materials can be treated?
Corona treatment usually involves the handling of surfaces made from materials such as: Polypropylene Vinyl Foils Polyethylene Metalized surfaces P...
How long do the effects of corona treatment last?
The lifetime of a Corona treatment depends on the treated material and the storage conditions. Since the effects of a Corona treatment tend to degr...
Will it work for my products?
Our experts look forward to discussing your individual needs and finding the right solution for your adhesion problems. We also offer free in-house...
Where should the corona treater be placed?
The equipment is usually installed in-line in a place that is aligned with the printing, coating, or bonding process. A corona treater can also be...
How much does it cost?
The costs of a corona treatment depend on your individual requirements. The treated material, its dimensions and responsiveness to corona treatment...