As printing and packaging materials continue to evolve, ensuring reliable ink and coating adhesion has become more critical than ever. Corona surface treatment plays a key role in preparing films, foils, and papers for high-quality printing, laminating, and converting. Below, we address some of the most common questions manufacturers and converters have about corona treatment and how it supports modern production demands.
Can Corona Treatment Improve More Than Just Ink Adhesion?
Absolutely. While corona treatment is widely known for improving ink adhesion, its benefits extend far beyond printing. The process also enhances bonding for coatings, laminates, and pressure-sensitive adhesives. This makes corona treatment essential in applications where multiple layers must adhere consistently and perform reliably over time, such as flexible packaging, labels, and specialty films.
Does Corona Treatment Wear Off Over Time?
Yes, surface activation from corona treatment can decay over time. Exposure to air, dust, moisture, or handling can gradually reduce surface energy. For optimal results, printing, coating, or laminating should occur as soon as possible after treatment—typically within 24 to 72 hours, depending on the substrate and storage conditions. Proper handling and storage can help extend the effectiveness of the treatment.
Is Corona Treatment Safe for Thin or Delicate Materials?
When configured correctly, corona treatment is safe for thin and delicate substrates. Modern systems allow precise control over treatment intensity, electrode design, and power output. This level of control ensures effective surface activation without overheating, pinholing, or damaging sensitive thin-gauge films commonly used in flexible packaging.
Can Corona Treatment Support High-Speed Production Lines?
Yes. Today’s corona treatment systems are engineered to perform consistently in high-speed environments. Pillar Technologies offers corona treatment stations designed specifically for high-speed converting and printing lines, maintaining uniform treatment across the entire web, even at speeds reaching several thousand feet per minute. This consistency is crucial for maintaining print quality and reducing waste.
Does Corona Treatment Support Sustainable Packaging Efforts?
Corona treatment supports sustainability by improving adhesion without the need for chemical primers or solvent-based coatings. This reduces environmental impact and helps manufacturers move toward mono-material packaging structures, which are easier to recycle. As sustainability becomes a higher priority across the packaging industry, corona treatment offers a cleaner, more efficient solution.
Can a Corona Treater Be Retrofitted Into an Existing Line?
Yes. Corona treatment systems can often be retrofitted into existing printing or converting equipment. Pillar Technologies offers flexible and customizable solutions designed for seamless integration with minimal downtime. Our engineering team works closely with customers to ensure proper fit, optimal performance, and smooth startup, without disrupting production schedules.
The Bottom Line
Corona treatment remains a vital technology for today’s printing and packaging operations. From improving adhesion and supporting high-speed production to enabling sustainable packaging initiatives, it provides a reliable and efficient way to meet modern performance demands. With the right system and configuration, corona treatment can be a powerful tool for improving quality, consistency, and productivity across your operation.