On a blow molding line, uneven preform heating shows up fast: flash, thin walls, and a scrap pile that climbs every shift. When the heating tunnel struggles, the whole line slows down. We built a single-tube IR lamp to replace the original spec—no guesswork—so you can hold temperature repeatability and cycle time where they belong. What matters technically This single-tube IR lamp is a direct-fit emitter for blow molders, built around a quartz envelope and a halogen/tungsten filament that delivers fast, focused short-wave IR energy. Typical ratings are 1.5–2.5 kW, 230 V or 120 V, matched to your machine’s circuit, with standard R7s ends and a length that matches OEM mounting and reflector geometry. The payoff is predictable spectral output and repeatable heating across the preform wall, so you hit setpoint quickly and keep it through long runs. Here’s why it works in stretch blow molding: the heating profile is the first constraint on both quality and throughput. This lamp restores the intended heat density in each heating station, which helps cut temperature drift and keeps the preform in the right thermal window before blowing. So what does that mean on the floor? Fewer rejects from inconsistent wall thickness, less scrap from overheated necks, and steadier output from the same blow molder. Energy use tightens up, too—the lamp comes up to temperature fast and delivers targeted IR, without the waste you get from oversized or mismatched heating elements. Installation is straightforward on most machines, but the heating tunnel is a harsh spot—high heat, vibration, and thermal cycling. Double-check voltage and wattage against the existing socket, and make sure the lamp length and end type clear the reflector and bracket without contact. Plan replacement during scheduled maintenance to avoid sudden output shifts. The service life is finite; stick to rated voltage and keep reflectors clean, and you’ll stretch run time while stabilizing heating performance.