http://uv-light-global.com/en/tags/line/ Recent content in Line on UV Light Global Hugo en-us Tue, 08 Sep 2026 12:20:24 +0800 http://uv-light-global.com/en/posts/solving-spring-back-in-automotive-interior-parts-using-zonal-infrared-heating/ Tue, 08 Sep 2026 12:20:24 +0800 http://uv-light-global.com/en/posts/solving-spring-back-in-automotive-interior-parts-using-zonal-infrared-heating/ <p><img src="http://uv-light-global.com/images/a22c1ee6df9085df31695ac5f11ad41b.png" alt="Solving Spring Back in Automotive Interior Parts Using Zonal Infrared Heating"></p> <h1 id="stop-your-interior-parts-from-warping">Stop Your Interior Parts From Warping</h1> <p>Ever pull a part out of the mold only to watch it slowly twist and bend right in front of you? It’s frustrating. That &ldquo;spring-back&rdquo; happens because the material is still fighting itself—internal stresses that never got smoothed out during heating. Most people try to fix this with bulk heating, but that&rsquo;s where the trouble starts.</p> <h2 id="the-problem-with-even-heating">The problem with &ldquo;even&rdquo; heating</h2> <p>Here&rsquo;s the thing: in a complex car part, &ldquo;even heating&rdquo; is basically a fairy tale. You&rsquo;ve got thin walls that overheat in seconds while the thick ribs are still cold in the middle. That&rsquo;s why we use zonal infrared (IR) control. Instead of one giant heat source, we use partitioned banks. You can tweak the wattage and the distance for each specific area. The goal is to get the whole part to that sweet spot—the glass transition temperature—at the exact same time. No hot spots, no cold spots, and no warping once the part hits the air.</p>