Fixing Those Annoying Heat Gaps in KHS Blow Molding Lines
Ever deal with PET bottles that come out looking “pearly” or have walls that are thin in some spots and thick in others? It’s a headache. Usually, it comes down to uneven heating in your KHS machines. You get these hot spots that basically chew through the preform, leaving you with a bottle that isn’t strong enough to do its job. We make IR lamps that slide right into your KHS systems to kill those gaps in heat distribution. The secret is in the build. Most standard IR lamps have “cold ends”—spots where the heat just drops off. We fixed that. By tweaking how the tungsten filament is wound and using really pure quartz, we make sure the energy is steady from one end of the tube to the other. It takes the guesswork out of your oven settings. If you’re running a high-speed line, these lamps just hold their ground, even when you’re cycling fast. Will they actually fit? Yes. They match the KHS footprint exactly. We use high-purity quartz so the glass doesn’t cloud up and fade over time. Even the connectors are beefed up. We know these get handled a lot during replacements, so we built them to stay tight. No arcing, no overheating—just a solid connection. One quick tip: keep an eye on your airflow. If you push more power into a shorter tube, you’re increasing the heat density. That’s great for the bottle, but it puts more pressure on your cooling blowers. Just make sure your cooling system can handle the extra load so you don’t bake your oven chassis. What this looks like on the floor When you swap out the OEM lamps for these, you’ll notice the temperature is way more consistent across the preform. The plastic stretches evenly. That means fewer bottles hitting the scrap bin and way less time spent fiddling with oven knobs trying to get the settings “just right.” Plus, we built these to tank the voltage spikes you get in a loud industrial plant. They won’t just pop the second the power fluctuates.