Optimizing Heat Distribution in Krones and KHS Blow Molding Machines with 400V IR Radiators

Tue, 08 Sep 2026 11:57:39 +0800

Getting Your PET Heat Right

If you’ve ever pulled a bottle off a KHS or Krones machine only to find the walls are uneven or the whole thing is deformed, you know the frustration. It usually comes down to one thing: your heating isn’t uniform. We spend a lot of time obsessing over IR radiator voltage and filament geometry so you don’t have to. When you’re running a 400V system, it’s all about finding that sweet spot between power density and electrical load. The deal with 400V Going with a 400V IR radiator lets you crank up the wattage without blowing a circuit. It’s the standard for European gear, and it means your lamps hit the right temperature fast. We make these as drop-in replacements for OEM parts. If you’re seeing cold spots in your current setup, it’s usually because the filament winding is off or the quartz tube is low-quality. We use high-grade quartz because it lets shortwave radiation soak into the PET preform without any weird gaps. It’s not about raw power Here’s the thing: just throwing more heat at the problem doesn’t work. Most standard lamps blast heat in the center and then fizzle out at the ends. That’s how you get those annoying “hot spots” that burn your preforms. We tweak the filament length and the winding pitch to flatten that curve. The result? A smooth, consistent heat profile from one end of the tube to the other. A few things to watch out for These fit right into your standard R7s or Sk15 sockets, so swapping them out is a breeze. But a heads-up: if you’re pushing higher heat density, your reflectors have to be spotless. A little bit of dust or oxidation on those mirrors will kill any gains you get from a better lamp. And one last tip—keep an eye on your cooling fans. Those 400V high-output tubes work hard, and they put a lot of stress on the system. Make sure your airflow is wide open, or you might find your sockets melting during a long run.

PET Blowing on Infrared Element Systems

Optimizing Heat Distribution in Krones and KHS Blow Molding Machines with 400V IR Radiators

Getting Your PET Heat Right