On a fast blow molder, preform heating sets the pace. If the heating tunnel can’t keep up, you’re chasing uneven wall thickness, flash, and short shots. You need a lamp that holds set temperature at high line speeds without drifting. What matters under the hood Our high-speed PET blowing lamp is a short-wave infrared emitter built around a quartz tube and a halogen filament. It hits the preform surface fast, with tight spectral control, so the skin reaches the stretch window quickly while the core stays even. Rated for 240V, it draws 1.5 kW and comes with an R7s connector for a direct drop-in fit to standard holders. Under steady voltage, output stays within ±2%, and the lamp is built for 5,000+ hours at full duty cycle with under 5% output drop. Why it behaves the way it does in stretch blow molding In stretch blow molding, the first seconds of heating make or break bottle quality. This lamp brings the preform up to temperature faster, so you can run higher cycles without overheating the neck or chilling the body. The payoff is more consistent biaxial stretching, fewer rejects, and less scrap. Energy use drops, too, because the emitter heats on demand and cools quickly, so you don’t carry idle losses in the tunnel. Field notes that save you headaches Installation is straightforward on most machines, but the heating zone is picky about spacing and reflector condition. Check clearance to the preform path and confirm voltage stability at the socket—line sag and loose connections will shift temperature. Keep the lamp surface clean and oil-free; fingerprints create hot spots and cut life short. Match the lamp to the original OEM focal distance, or you’ll end up retuning the entire heating profile.