How to Reduce the Effect of Oxygen Inhibition

A large portion of UV-curing formulations cure through a free radical curing process. In this process, UV waves from a light source trigger a photoinitiator to release free radicals, which then start a chain reaction with reactive acrylate groups on...

Why Short and Medium Wavelength UV Prevent Oxygen Inhibition

"I've been investigating why we have uncured surface material and learning about oxygen inhibition, however I have one question which I can't find an answer to and wonder if you can help. Why does shorter and medium wavelength UV prevent oxygen...

Removing Oxygen Inhibition From Cured Parts

  "Can oxygen inhibition be removed from cured parts without damage to the fully-cured substrate area? We are looking to change our process to include a nitrogen blanket, but have many components that cannot be completed due to the tackiness on the outer...

Determine When Full Adhesive Cure is Accomplished and Create a Robust Light Curing Process

"I am trying to understand the UV-curing process. How can I determine when an adhesive is fully cured? What are the critical parameters that I need to control in order to gain good consistency for the curing? Also, I was trying to cure some adhesive on a...

Why Is My UV Coating Sticky?

Tackiness or stickiness may be noticed on the surface of some ultraviolet (UV) light curable adhesives and coatings. This phenomenon, known as oxygen inhibition, is the result of atmospheric oxygen inhibiting the cure on the surface layer of the...

How to Achieve Tack-Free Adhesion

"In the past, we have seen that some light curing adhesives are impacted by some type of inhibition, leaving a tacky residue at the surface.  What causes this, and how can we avoid this?"

Here's how it works...

Light curing acrylate adhesives cure by...

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