On a high-speed blow molding line, preform heating is where the cycle kicks off—and where scrap often starts to creep in. When the heating profile drifts, you’re looking at uneven wall thickness, crystallized shoulders, or weak necks. Then the whole line gets pulled down chasing quality. We built a gold-coated infrared lamp for PET to keep that heating tunnel locked in, even when you’re running thin-wall, high-output jobs. What matters, technically These emitters use a gold-coated reflector to focus short-wave infrared energy right onto the preform surface. The result is fast response and tight temperature control across the heating zones. The coating boosts reflectivity and cuts heat loss, so more energy goes into the PET, not into heating up the tunnel. We match the standard mounting and termination—R7s base, quartz envelope, and OEM-equivalent dimensions—so the lamp drops straight into existing heating modules on Sidel, Krones, SIPA, Husky, SACMI, and Nissei ASB blow molders. No re-engineering the brackets. Why it works in stretch blow molding In stretch blow molding, the preform needs a repeatable temperature gradient: warm body, cooler neck and finish. This lamp stabilizes heat flux, which reduces temperature swing and keeps the blow-up consistent. In practice, that means fewer pinholes, less thickness variation, and scrap rates that are more predictable. The fast-on response supports shorter cycle times, and the focused output wastes less energy, so you spend less on electricity per thousand bottles. What you need to know Installation is straightforward, but alignment is everything. Even a small reflector offset changes the spot size and can create hot and cold bands. These lamps run hot, so check clearance to nearby sensors and shielding, and use the correct connector rating. The gold coating holds up well, but it’s still a surface finish—clean the reflector during routine maintenance and don’t touch it, or you’ll shorten its service life.