Replacement lamp for SIG blow molding

Sun, 12 Jul 2026 12:19:55 +0800

Getting the Heat Right in High-Speed PET Blowing

If you’re running a Husky HyPET system, you know the struggle. It’s not about just getting the outside of the PET preform hot. That’s the easy part. The real trick is pushing that heat deep into the core without scorching the surface. We build our replacement lamps specifically for this. When you’re pushing for high throughput and tight cycle times, you can’t afford for your heating to be “mostly” right. The secret is in the wavelength. To get heat into the thickest parts of the preform, we play around with the halogen gas pressure and filament temperature inside the quartz tube. Why? Because it shifts the emission toward short-wave infrared. Short-wave heat cuts through PET plastic way better than long-wave heat does. It stops those annoying “cold spots” in the base of the preform. You know the ones—they’re usually why you get uneven walls or, even worse, a blow-out during stretching. No fuss, just a drop-in fix. We didn’t want you spending hours on a rebuild. These lamps are designed to be simple drop-in replacements. We use high-purity quartz glass because it can handle the thermal shock of rapid cycling without cracking. Whether you’re on a 230V or 400V setup, the wattage is tuned to fit your oven’s footprint. And we stick to standard R7s or Sk15 connectors. You just plug them in and get back to work—no messing around with the sockets. A quick reality check. Here’s the thing: high heat density is great for speed, but it’s tough on your gear. When you’re pushing for maximum penetration, your oven’s ambient temperature is going to climb. Keep an eye on your cooling blowers. Make sure they’re clean and actually doing their job. If the cooling fails, you’re looking at warped quartz tubes or burnt-out sockets. Not a fun way to spend a Tuesday. We build these lamps to take a beating in 24/7 production. By focusing on the IR wavelength instead of just cranking up the raw wattage, you keep the “skin” of the preform safe while making sure the core is soft, plasticized, and ready for the mold.

SIG on Smart IR Heating Solutions

Replacement lamp for SIG blow molding

Getting the Heat Right in High-Speed PET Blowing