FAQs About Surface Treatment for Polymers
Why do polymers need surface treatment before printing, coating, or bonding?
Most polymers, like polyethylene (PE), polypropylene (PP), and polystyrene, have low surface energy, which makes them naturally resistant to bonding with inks, adhesives, and coatings. Surface treatment enhances the surface energy, enabling better adhesion and more reliable performance in downstream processes.
What’s the difference between corona treatment and other surface treatments for polymers?
Corona treatment is highly effective for roll-to-roll and continuous processes. It’s fast, clean, and cost-effective. Other options, such as flame treatment or plasma treatment, may be used for 3D objects or applications requiring deeper or more chemically specific surface modifications. Pillar Technologies can help determine which is best for your operation.
How long does surface treatment last on a polymer film?
Treated polymers are most receptive to bonding within 24 to 72 hours of treatment. However, the treated surface can degrade over time due to factors like dust, humidity, or oxidation. For critical applications, testing dyne levels just before converting or printing is recommended.
Can corona treatment be customized for different polymer types and line speeds?
Yes. Pillar Technologies offers custom-configured treatment stations that are tailored to your substrate type, width, line speed, and required dyne level. Whether you’re working with thin films or thick industrial sheeting, our systems are built to deliver consistent and reliable treatment results.