Getting Your Sidel Heating Lamps Right (Without the Headache)
If you’ve spent any time around PET stretch blow molding, you know the struggle. One wrong move with your thermal profile and suddenly you’re staring at pearlescence or thin walls that just won’t hold. It’s frustrating. That’s why we make infrared heating bulbs that actually fit. Whether you’re still running the old-school SBO lines or you’ve moved up to the Matrix series, these are designed to slide right in. The nitty-gritty on power We’ve matched our lamps to the exact voltage and wattage your Sidel oven expects. Whether you’re on 230V or 400V, the goal is simple: get that preform to the glass transition temperature without scorching the neck. To make that happen, we use high-purity quartz glass. It can take the hit of rapid heating and cooling cycles without cracking. But here is a pro tip: keep an eye on your power supply rails before you swap them out. If you decide to push the wattage higher than what the OEM originally called for, your cabinets might start running hot. And when cabinets get too hot, contactors fail. Nobody wants that mid-shift. No rewiring, no fuss We use standard R7s and SK15 connectors. Why? Because you shouldn’t have to rewire your entire machine just to change a bulb. They are true drop-in replacements. We also add a special coating to the quartz. Instead of wasting heat on the machine frame, this coating shifts the infrared spectrum so the heat goes exactly where it belongs—into the PET. We’re also obsessive about the dimensions. If a bulb is off by a fraction, it rattles in the reflector. And if it rattles, it burns out early. We keep the tolerances tight so they stay put. A few things to watch out for These work great for Matrix and SBO series, but there’s a trade-off. That coated quartz is a beast at transferring heat, but it’s a bit more fragile than the uncoated stuff. Please, use gloves. If you touch the glass with your bare hands, skin oils leave marks. Those marks create hot spots, and the lamp will likely snap the very first time it heats up. Just seat them properly in the reflector, keep the oils off the glass, and they’ll last as long as they’re supposed to.