What does corona treatment do?
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 is corona treatment measured?
There are no limits to the substrates that can be Corona treated, but the intensity of the treatment required will vary significantly according to their chemical make-up. The best way to determine the exact value is by testing a sample of the actual film that is being used for a specific application.
What is corona treatment for plastic film?
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.
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.
How long does flame treatment last?
A Flame Treating process consists of exposing the surface to a suitable oxidizing flame for a period in the range 0.2 to 3.0 seconds.
What is the difference between corona and plasma treatment?
The plasma discharge is virtually potential-free so it can be used to treat conductive materials. Plasma also produces no ozone gas which is a natural byproduct of the corona process. Alternatively, corona discharge typically imparts less surface energy but can treat very large areas.Jul 23, 2021
What is corona discharge class 12?
A corona discharge is an electrical discharge brought on by the ionization of a fluid such as air surrounding a conductor that is electrically charged. Spontaneous corona discharges occur naturally in high-voltage systems unless care is taken to limit the electric field strength.
What is plasma treatment of plastics?
Plasma Treatment of Plastic Plasma treatment of plastics to improve adhesion is a two-fold surface activation and cleaning process. In the first instance, the plasma treating the plastic cleans away volatile organic compounds that otherwise impede bonding, painting and gluing.
What is meant by surface treatment?
Surface treatment is an additional process applied to the surface of a material for the purpose of adding functions such as rust and wear resistance or improving the decorative properties to enhance its appearance.Aug 23, 2021
What is corona treatment in packaging?
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.
Is surface tension the same as surface energy?
We usually use surface tension when referring to liquids and surface energy when referring to solids, but in reality they are the same thing. Surface tension and surface energy are important because they are measurable numbers that tell us how strong the attraction between molecules is.
How do you calculate surface energy?
= surface tension × increase in surface area.
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...