Stop Fighting Your Contiform S: A Better Way to Handle Heat
If you’ve ever spent a whole shift wrestling with a Krones Contiform S or a KHS blower, you know the frustration. One minute you’re fine, the next you’re staring at bottles with weird wall thickness or that annoying pearlescent haze. It usually comes down to one thing: your heat field is a mess. When the thermal distribution is off, you aren’t running the machine—the machine is running you. That’s exactly why we built our replacement IR bulbs. We wanted to kill those thermal gaps for good. The Power Stuff We didn’t guess on the specs. These lamps are built specifically for the voltage and wattage the Contiform S expects. We use high-wattage shortwave IR to push energy into a tight, focused beam. The result? Your preforms hit that glass transition temperature way faster. You get more bottles moving through the line per hour. But a word of advice: don’t ignore your cooling fans. Pushing more wattage puts more stress on your oven’s ventilation. If your fans are clogged with dust, these lamps will burn out fast. Keep them clean. Built to Last (and Fit) Rapid cycling is brutal on equipment. To handle that thermal shock, we use heavy-wall quartz glass. We also added an internal halogen cycle, which keeps the tungsten filament from evaporating too quickly. It just makes the bulbs last longer. Installation is the easy part. These are drop-in replacements. Whether you’re using R7s or SK15 connectors, they slide right in. No hacking, no modifying lamp holders, no headache. We also obsessed over the emissivity of the quartz. We want the heat hitting the preform, not wasting energy by heating up the oven walls. Real-World Results Our high-end tubes now match or even beat the OEM thermal mapping. We spent a lot of time tightening the tolerance on the filament centering. Why? Because “cold spots” along the tube are a nightmare. When the heat is consistent, you stop hovering over the HMI tweaking heating zones every ten minutes. You get a steady profile across the whole preform, which means way less scrap in the blowing phase. One last tip: check your reflectors. If they’re dirty, it doesn’t matter how good the lamp is—you’re throwing away performance. Give them a polish, pop in the new bulbs, and actually enjoy your shift for once.