Out on the plant floor, a blown bottle reject is never just scrap. It’s wasted energy, burned minutes, and a heating profile that missed the mark. In stretch blow molding, preform temperature control isn’t a nice-to-have—it’s the line between hitting cycle time and watching scrap climb. When the heating tunnel can’t hold uniformity, you feel it every shift.
What matters, technically
We run short-wave infrared quartz emitters in the preform temperature control lamp—fast thermal response, tight spot control. Standard setups are 240V or 480V, with watt densities matched to preform wall thickness and cycle rate. The emitter body uses a compact R7s connector layout, so it drops straight in. The reflector geometry focuses heat on the neck and body without spilling energy.
We size lamp length and zone count to match your blow molder’s heating tunnel—Sidel, Krones, SIPA, Husky, SACMI, or Nissei ASB. The point is repeatable heating, not guesswork.
Why it works in practice
Infrared hits the preform directly, with quick start-up and minimal warm-up lag. After a jam or a short stop, temperature recovery is fast, so stretch blow molding stays consistent and bottle weight settles. Because the heat is targeted, you’re not wasting energy on air, and temperature drift across the tunnel drops.
Fewer pinholes. Better biaxial orientation. More uptime. When heating is predictable, the blow molder runs closer to design speed.
What to keep in mind
Installation is straightforward on most machines, but alignment is everything. If the lamp sits off-center, you’ll get hot spots and uneven stretch. Infrared emitters are sensitive to surface condition—keep reflectors clean and handle quartz tubes carefully. Fingerprints will show up as hot spots.
Plan on 5,000+ hours under normal conditions, and confirm voltage and connector specs against your machine’s socket before ordering.