Can a simple lamp swap actually push out more bottles?
If you’re running an older Krones Contiform, you’ve probably noticed things slowing down. The original heating elements get tired. You start seeing those annoying “cold spots” or inconsistent heating in your preforms, and your first instinct is probably to rip out the whole oven. But honestly? Most of the time, the problem is just a lack of IR energy density. You don’t need a total overhaul. You just need better lamps. Switching out your worn-out tubes for precision shortwave lamps can often bring back the speed you lost years ago. Let’s talk about the heat. Wattage and voltage aren’t just specs on a datasheet. They’re what actually get your PET to that sweet spot where it’s ready to blow. We build our replacements to hit a very specific energy flux. Here’s the trick: if you move to a higher wattage lamp without changing the size of the tube, you’re pushing more heat into the plastic, faster. That means you can crank up the conveyor speed or even shut down a few heating zones. Just a heads-up—check your power supply first. If you jump up in wattage, make sure your wiring and panels can handle the extra load. You don’t want to be staring at a tripped breaker in the middle of a shift. The nitty-gritty on quartz and plugs. We use heavy-wall quartz glass. Why? Because cheap glass bows when it gets hot, and that ruins everything. We also stick to R7s or Sk15 connectors. They fit tight. If a connection is loose, it arcs, and before you know it, you’ve burned out the socket. And if you’re worried about the plastic looking cloudy—that “pearlescence” look—we have coated versions. They shift the spectrum so the heat actually sinks into the preform wall instead of just scorching the surface. The reality on the shop floor. These are drop-in replacements. No need to spend a weekend re-engineering your oven. But there is one catch. More heat in the oven means more heat in your facility. If you’re pushing for maximum output, make sure your cooling blowers are spotless. If your airflow is choked, you’ll overheat the preform necks no matter how fancy your lamps are.