High temperature PC preform heating system

Tue, 23 Jun 2026 15:31:46 +0800

On the blow molding line, PC preforms are picky—they need a tight thermal window. Too cool, and you get weak biaxial stretch and haze. Too hot, and you risk degradation and ambering. If the heating tunnel drifts even a little, you’re losing good bottles and wasting time. We built a high-temperature PC preform heating setup to hold that window steady, even on sustained profiles that standard emitters can’t handle. Control and durability are what matter in the real world. The system uses short-wave infrared quartz emitters tuned to PC absorption, so you get rapid, through-thickness heating without scorching the surface. We spec stable filaments and low-thermal-mass reflectors to keep output consistent across the heating tunnel—uniform preform temperature from the first row to the last. The emitters are engineered for high-temperature operation, with voltage and watt density matched to your blow molder’s zones. Connections are R7s-type, so they drop straight into existing sockets—no rewiring. Here’s the payoff: it fits, and it performs. You keep the same footprint, but heating repeatability improves. Stretch ratios settle, and wall thickness becomes more consistent. That means fewer rejects, more stable bottle weight, and cycle times that don’t wander. Energy use drops because the emitters heat fast and hold steady without big cycling swings. And replacement intervals stretch out, so maintenance stops and spare inventory take a hit. One practical heads-up: high-temperature profiles push emitters and insulation to their limits, so alignment and clean reflectors matter. Install with verified clearances and make sure the zone power lines up with your blow molder’s OEM setpoints. We provide 1:1 parameter matching to common blow molding platforms, but confirm your specific machine model and heating zone layout before you finalize. The end result is a heating section that earns its keep—day after day.

PC on Pro-Grade Infrared Home Comfort

High temperature PC preform heating system