http://heatinglamponline.com/en/tags/overprint/ Recent content in Overprint on Heating Lamp Online Hugo en-us Sun, 26 Jul 2026 00:22:28 +0800 http://heatinglamponline.com/en/posts/engineering-precision-in-shortwave-ir-lamps-for-overprint-varnish-drying/ Sun, 26 Jul 2026 00:22:28 +0800 http://heatinglamponline.com/en/posts/engineering-precision-in-shortwave-ir-lamps-for-overprint-varnish-drying/ <p><img src="http://heatinglamponline.com/images/e3410bf6857e2999d7e330ab8c759419.png" alt="Overprint varnish drying lamp"></p> <h1 id="getting-your-varnish-to-dry-just-right">Getting Your Varnish to Dry Just Right</h1> <p>Getting overprint varnish (OPV) to cure is a bit of a balancing act. If you don&rsquo;t hit that sweet spot with the heat, you end up with a surface that&rsquo;s still tacky. But push it too far? You&rsquo;ll start seeing blisters on your substrate. It&rsquo;s a tight window. That&rsquo;s why we don&rsquo;t just build &ldquo;lamps.&rdquo; We build them to hit a very specific energy density. We&rsquo;ve spent a lot of time obsessing over the quartz and the filament geometry so that our <a href="https://henruite.com">output</a> matches the big international brands you&rsquo;re used to.</p>