LED Curable Coatings and Litho OPV’s

With LED curing system installations and retrofits on the rise, Kustom Group recognizes the need for a more diverse portfolio of LED curable coatings and overprints. With that in mind, we introduce our latest catalog of LED curable coatings and overprints divided into two categories based on press configuration we title “for Offset Gap” and “for Flexo Gap”. The idea of one particular LED coating curing across a wide variety of press configuration is no longer technically viable.

 

The biggest challenge to LED curing continues to be surface cure which is drastically impacted by the gap between the array (lamp) and the substrate. The location of the array is dictated by the equipment it is attached to and how the standard printing processes operate. In offset printing, the location of the array is impacted by the grippers used to move the individual sheets through the press, while in flexo there isn’t the same issue when running a web. The gap between the array and the substrate is very different: in offset applications it is 5.0 – 6.5 centimeters, while in flexo applications it is 3.0 – 5.0 millimeters – a factor of 10+.

 

Kustom has determined that no one LED coating can work well for both offset and flexo applications. These differences create different curing parameters and require different products. A coating formulated for the flexo gap will likely never fully cure if applied at offset gaps, while the risk of using a coating for the offset gap on the flexo gap process may result in over yellowing, limited press stability and brittleness of the cured film. Kustom Group’s latest developments, outlined in the tables below, are a direct response to the need for better choices for the given process. Our “for Flexo Gap” coatings are suitable for close proximity arrays, and our “for Offset Gap” coatings and overprints are intended for the greater offset gap employing eight (8) Watt or higher bulbs.

 

for Offset Gap
Code Description
LED-003 Gloss LED Coating for Offset Gap
LED-004 Satin LED Coating for Offset Gap
LED-018 Matte LED Coating for Offset Gap
LED-019 Gluable Gloss LED Coating for Offset Gap
LED-022 Gloss Litho LED OPV
LED-023 Satin Litho LED OPV
LED-025 Matte Litho LED OPV
LED-028 Ultra Reticulation Strike-Thru Litho LED OPV
LED-690 Sparkling Blue Angle Dependent LED Coating for Offset Gap
LED-703 Raised LED Coating for Offset Gap
LED-705 Textured LED Coating for Offset Gap
LED-737 Coarse Sandy LED Coating for Offset Gap

 

for Flexo Gap
Code Description
LED-012 Gloss LED Coating for Flexo Gap
LED-010 Satin LED Coating for Flexo Gap
LED-009 Matte LED Coating for Flexo Gap
LED-007 Imprintable Gloss LED Coating for Flexo Gap
LED-702 LED Soft Feel Coating for Flexo Gap
LED-681 Angle Dependent Sparkling Blue LED Coating for Flexo Gap
LED-701 LED Emboss Coating for Flexo Gap
LED-734 Coarse Sandy LED Coating for Flexo Gap
LED-725 Fine Sandy Matte LED Coating for Flexo Gap

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