On the blow molding line, thick preforms are just one of those headaches you learn to live with. Standard heating leaves the neck cold and the body under-softened, so you back off the wheel speed to keep bursts from wrecking your run. The price? Scrap, stretch that’s all over the place, and a lot of extra energy. And the kicker is the time you burn on every changeover.
What matters, technically
We built this softening IR lamp for thick-wall preforms. It throws high-intensity short-wave energy that penetrates faster and heats more evenly. The emitter uses a high-purity quartz tube with a tuned filament, optimized for the PET absorption band. That gives you rapid surface-to-core softening without scorching. Power density is matched to the heating tunnel geometry on Sidel, Krones, SIPA, Husky, SACMI, and Nissei ASB machines. It drops in with standard R7s connectors and exact OEM mounting dimensions. Output holds steady over 5,000+ hours, with less than 5% drop in irradiance.
Why it works in the real world
Thick preforms need more energy, and they need it fast and repeatable. This lamp cuts the heating window and tightens the temperature spread. So you can run thicker walls at higher line speeds without thinning the neck or over-stretching the body. That means fewer bursts, less scrap, and more parts per hour. Energy use goes down because you aren’t holding heat longer than needed, and changeovers are quicker because the profile hits setpoint sooner. The result is more consistent bottle weight, better top load, and fewer stops for jams.
The details you’ll care about
Installation is plug-and-play on R7s sockets, but you still need to re-tune the PID and verify reflector alignment. In humid plants, keep the lamp face clean and dry — otherwise you’ll see hot spots. If your machine runs 24/7, plan replacements around the 5,000-hour mark so you don’t get blindsided by an outage. We provide exact wattage and dimensional data for your blow molder, so you can match the heating profile without re-engineering the tunnel.