On the blow molder, the heating section is where the whole line gets its rhythm—or loses it. If the preform doesn’t come through the heating tunnel with the right temperature profile, stretch becomes inconsistent, crystallization goes sideways, and scrap starts climbing in a way you can predict. When the existing lamps are weak, the quickest, least disruptive fix isn’t a full machine refit—it’s swapping in a drop-in infrared emitter that matches the machine’s electrical and thermal setup. What we actually spec We run the 415V 2500W infrared lamp for blowing because the voltage lines up with the common three-phase supply in most plants, and the power density is chosen to deliver heat fast—controlled, repeatable heat—inside the heating tunnel. The emitter is built around a quartz envelope with a halogen filament, putting out short-wave infrared that couples efficiently into PET preforms. You get fast response, tighter control, and output you can count on cycle after cycle. Fit is not optional. We stick to standard dimensions and R7s connector compatibility so the lamp drops in the same way as the OEM lamp—no bracket fabrication, no guesswork. Why it makes sense on the line In stretch blow molding, the heating stage wins or loses you cycle time. With the correct 415V 2500W lamp, you restore the heat balance the machine was designed for. The payoff is fewer temperature-related defects and more consistent bottle weight. The rapid ramp-up also keeps production speeds stable without pushing the heating zones into overshoot, and the improved control cuts down on wasted energy. In practice, that translates to less scrap, fewer stops, and a heating section you can set and then trust to do its job. A few real-world details that matter Infrared heating performance comes down to reflector condition, lamp alignment, and the distance from preform to emitter. Install with clean contacts, and make sure the socket isn’t worn—loose connections raise resistance and kill output. Also check your control strategy. If the machine relies on lamp-based feedback, the replacement has to match the original’s spectral response, or the setpoint logic won’t behave the way it should.