The Key to Durable, High-Quality Finishes on Challenging Substrates
High quality coatings have a number of benefits, including glossy finishes, tactile feel, and slip/skid resistance. They can also provide a protective barrier against moisture, oxygen, and grease. But for these coatings to perform properly, they need to be able to adhere tightly to the substrate.
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Corona treatment is the ideal solution for increasing the adhesion of coatings to substrates. Many substrates have low surface energy, meaning that coatings cannot easily adhere to the surface, leading to flaking and poor durability. Corona treatment works by exposing the substrate to a high voltage electrical discharge, modifying the substrate and substantially increasing its surface energy.
The increased surface energy from the corona treatment process allows for much better adhesion of a wide variety of coatings, including:
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Paper wraps
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Air knife coating
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Blade coating
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Curtain coating
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Flexographic coating
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Flood coating
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Lithographic coating
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Metering rod coating
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Rotogravure coating
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Size press coating
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Tower coating
Additional Benefits
Many different substrates can be corona treated, including plastics, metals, and other non-porous materials. In addition to increased adhesion and durability, corona treatment provides many benefits.
Enhanced printability, making it easier to print on the surface of the substrate.
Improved surface uniformity, which can result in more consistent coating thickness and improve product appearance.
Improved surface cleanliness, which reduces the risk of contamination and other issues that can impact product quality.
Reduced need for primers, which can reduce costs and simplify the coating process.
Corona treatment is an invaluable tool for the coating industry. If you’re interested in more information about corona treatment stations from Pillar Surface Treaters, don’t hesitate to contact us today. Our team will work with you to determine the best corona treatment configuration for your needs.
Frequently Asked Questions
Many substrates used in coating applications have low surface energy, which makes it difficult for coatings to bond effectively. Corona treatment modifies the surface at a microscopic level, increasing surface energy and allowing coatings to adhere more uniformly and durably. Without proper surface treatment, coatings may peel, flake, or fail to cure correctly.
Corona-treated surfaces offer several performance advantages, including:
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Stronger coating adhesion
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Reduced risk of delamination or edge lift
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Improved surface uniformity for consistent coating thickness
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Enhanced durability under handling or environmental stress
It also reduces the need for costly primers or mechanical abrasion steps.
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Yes. By improving coating adhesion naturally, corona treatment can reduce or eliminate the need for primers or additional chemical pretreatments. This simplifies the process, reduces material use, and supports more sustainable production by lowering chemical waste and improving coating line efficiency.
Yes. Corona treatment systems from Pillar Technologies are designed for high-speed production and continuous roll-to-roll processing. Our systems can be configured to maintain consistent treatment across the entire web, even at elevated speeds, ensuring high-quality coating application without slowing down your operation.
Get Started Today!
Corona treatment is an invaluable tool for the coating industry. If you're interested in more information about corona treatment stations from Pillar Surface Treaters, don't hesitate to contact us today. Our team will work with you to determine the best corona treatment configuration for your specific needs.