On the Nissei ASB 70DP/150DP, the heating tunnel runs on a narrow thermal window. You drift a little on preform temperature and you’re staring down flash, wall thinning, or that amber tint. Then you lose time swapping lamps, and the line momentum goes with it. We built the 70DP/150DP infrared lamp spare to keep the tunnel inside the OEM thermal window, shot after shot, without chasing the curve. What it has to do, technically The emitter is a quartz tube with a halogen filament, tuned for short-wave infrared. Response is quick, and control stays tight across the neck and body. Specs line up with the ASB 70DP/150DP: rated power and voltage match the machine’s heater bus, the R7s connector geometry is correct, and overall length drops in clean. The filament support and end-seal design hold up to repeated thermal cycling, and the spectral output stays matched to the reflector profile so the heat lands where the process expects it. Why this matters on a stretch blow molder In stretch blow molding, repeatable preform temperature is the difference between stable output and scrap. These lamps restore the original heating curve, so you get consistent wall distribution and cycle speed without chasing setpoints. Energy stays in line because the output matches the machine’s design, and fewer lamp changes mean fewer stops. Teams typically see stable heating after the first lamp swap and fewer quality excursions downstream at the filler. The practical details that make it work Installation is straightforward, but the lamp has to sit square in the R7s socket with no end play. Misalignment causes uneven heating and cuts life short. Check voltage at the terminal and confirm the reflector condition before startup. Keep the heating tunnel clean, too—film buildup on the quartz skews temperature and can hide lamp issues. Handle with gloves; fingerprints turn into hot spots the first time it heats up.