Stop Fighting with Hot Spots in Your Krones Contiform S
Ever pull a batch of PET bottles off the line only to see that annoying pearlescence or weird wall thickness? It’s frustrating. You know the oven is running, but the heat just isn’t hitting the preforms evenly. Usually, it comes down to the IR lamps. Either the spectral output is off or the filament is just worn out. That’s why we make drop-in replacement bulbs specifically for the Contiform S. They’re designed to kill those hot spots once and for all. The secret is in the heat field. To get a perfect stretch, you need the wattage to be consistent across the entire tube. We use high-purity quartz glass so the shortwave radiation actually sinks into the PET instead of just bouncing off the surface. And let’s be honest: if you’re cranking the voltage to shave seconds off your cycle times, your filaments are taking a beating. We’ve balanced the tungsten grain size to stop the filament from sagging. No sag means no cold spots in the middle of your oven. Simple as that. No headaches during install. You don’t have time to rewire racks or mess around with reflectors. These lamps are a direct swap. They fit the original footprint exactly. ***The plugs:**They fit Krones sockets perfectly. No loose connections. ***The waveband:**Optimized for short-wave IR, so the PET absorbs heat fast. ***The consistency:**We keep the wattage tolerances tight. Every lamp in the bank does its job the same way. A quick tip from the shop floor. High-output tubes put out a ton of heat. It’s great for speed, but it puts a lot of pressure on your ventilation. If you’re pushing your BPM to the limit, check your cooling fans. If they’re clogged with dust, it doesn’t matter how good the bulb is—your efficiency will tank. Swap the bulbs, clean your reflectors, calibrate your zones, and you’ll see those thickness variations disappear.