Stop Fighting With Your KHS Oven Heat
Ever pull a bottle off the line and notice the walls are weirdly thin in some spots or the whole thing looks slightly warped? It’s frustrating. Usually, it comes down to one thing: your oven isn’t heating the preforms evenly. When those lamps aren’t hitting the PET just right, you get “hot spots” and cold zones. That’s where we come in. We make replacement heater bulbs that actually fit the Krones and KHS specs, focusing on the exact wattage and light spectrum you need to get a perfect stretch every time.
The Science (Simplified)
We use high-purity quartz glass. Why? Because it lets shortwave infrared radiation sink deep into the plastic instead of just scorching the surface. Here is the thing: if your wattage density is off, you’re asking for trouble. You’ll either end up with burnt necks or a base that’s still too cold to mold. We keep our filaments on a very tight leash. We make sure the heat stays flat across the whole tube, so you don’t get those annoying peaks and valleys in temperature.
No-Fuss Installation
Nobody wants to spend hours fiddling with wiring. Our lamps use standard R7s or Sk15 connectors, so you just pop them in and go. We also ditched the flimsy parts. The contacts are built tough because we know these things live in a brutal, high-heat environment. They won’t oxidize or give up on you after a few weeks. Plus, if you’re looking for more speed, we’ve got coated options. These reflect certain wavelengths back into the preform, which means the plastic absorbs heat faster. **But a quick heads-up:**more heat means your cooling fans have to work harder. If your vents are clogged with dust, these high-output tubes will bake your reflectors. Keep those fans clean.
A Couple of Pro Tips
Switching to high-performance tubes usually fixes the uniformity problem, but don’t just plug them in and hope for the best. Check your power supply first. A 400V high-wattage tube puts out a ton of heat, but it needs a steady stream of current to stay stable. If your transformers are old and tired, you might see the lights flicker or—even worse—the bulbs might burn out way too early. Do yourself a favor: check your voltage rails before you swap out the whole set. It’ll save you a massive headache later.