Getting Your Heat Profile Right on Krones Contiform Blow Molders
If you’ve spent any time around a Krones Contiform, you know the struggle. Keeping that heat profile consistent is everything. If your infrared energy is off, your bottles are off. Simple as that. But here is the problem: OEM replacement lamps are getting ridiculously expensive. You need a replacement that just works—something that drops right in and hits the same spectral output so your wall thickness doesn’t go haywire. The power struggle These lamps pull a lot of wattage. They have to, because you need that heat to soak into the PET preform fast. We build our tubes to handle the exact voltage loads your Contiform oven demands. Why does this matter? Because if the wattage dips even a tiny bit, you’re in trouble. You’ll start seeing under-heated preforms, weird stress whitening, or bottles that stretch unevenly. It’s a headache you don’t need when you’re trying to keep the line moving at full speed. Quartz and connectors (the gritty details) We use high-purity quartz glass. Why? Because these things go through a brutal cycle of heating up and cooling down. Cheap glass cracks. Ours doesn’t. Then there are the connectors—usually R7s or Sk15. We make sure the fit is tight. In a vibrating factory environment, a loose connector is a death sentence. It leads to arcing, and once that happens, the end of your lamp is toast. Making it all work together The good news is that these are direct replacements. You can wire them into your current setup without needing a degree in electrical engineering. But a quick heads-up: high-density IR lamps dump a lot of heat into the air around them. If you’re cranking the wattage to max out your throughput, make sure your cooling blowers are actually clean. If the oven gets too hot inside, your preforms will start to sag. And nobody wants that. At the end of the day, we focused on the “spectral match.” We made sure the heat actually penetrates the plastic instead of just scorching the surface. You get the same performance as the expensive OEM parts, but at a price that doesn’t make your accounting department scream.