Cationic UV Flexo Ink — TWG-FXUCAT

The TWG-FXUCAT is a cationic UV flexo ink from TriWill Group, formulated for label and packaging applications requiring excellent adhesion, low odour, and post-cure performance. Unlike free-radical UV inks, cationic UV inks continue curing after UV exposure, delivering superior adhesion to difficult substrates and very low residual odour — making them ideal for sensitive packaging applications.

TriWill Group supplies TWG-FXUCAT to US label converters and packaging printers producing labels and packaging for food, personal care, and applications where low odour and difficult substrate adhesion are critical.

Key Features

• Low Odour: Very low residual odour — ideal for food and sensitive packaging.
• Excellent Adhesion: Superior bonding to difficult and non-porous substrates.
• Post-Cure Performance: Continues curing after UV exposure for complete cure.
• Chemical Resistance: Good resistance to chemicals and product contact.
• Specialty Applications: Suited to demanding label and packaging requirements.

Frequently Asked Questions

What is cationic UV ink?

Cationic UV ink is a UV-curable ink that cures through a cationic polymerisation mechanism, continuing to cure after UV exposure. It offers excellent adhesion to difficult substrates, very low odour, and good chemical resistance compared to standard free-radical UV inks.

What is the difference between cationic and free-radical UV ink?

Free-radical UV inks cure only during UV exposure and are the standard for most label applications. Cationic UV inks continue curing after exposure, offering better adhesion to difficult substrates and lower odour, but require careful handling. TriWill supplies both.

When should I use cationic UV ink?

Cationic UV ink is ideal for applications requiring low odour (such as food packaging), adhesion to difficult non-porous substrates, or good chemical resistance. Contact TriWill Group to discuss whether TWG-FXUCAT suits your application.

Does TWG-FXUCAT require a UV curing system?

Yes. TWG-FXUCAT is formulated for UV curing and requires a UV curing system. Contact TriWill Group to confirm compatibility with your press.