On the blow molding floor, heating drift is the quiet killer of output. When the heating tunnel can’t hold preform temperature, you end up with cycle delays, inconsistent stretch, and a jump in scrap. On SIG machines, the fix comes down to matching the Infrared emitter to the machine’s electrical and thermal behavior.
What matters under the hood
We spec the lamp as a 480V, 3000W infrared unit, sized to the power budget of SIG blow molders. The quartz envelope gives you fast response and stable output, cycle after thermal cycle. The output is tuned to heat PET preforms efficiently, so the heating profile stays repeatable shift after shift. The R7s connector and dimensions match the OEM mounting and wiring, so the swap is straightforward.
Why it settles the process
Drop it into the heating tunnel and you restore the intended heat balance. Preforms hit the right temperature faster, so stretch blow molding runs at the designed cycle without overheating or underheating. You see fewer rejects from thickness variation and weak necks, and less operator time spent chasing temperature. Energy stays close to baseline because the wattage and voltage line up with the machine spec, so you’re not wasting power or underperforming.
Practical notes
Make sure the 480V supply, phase, and grounding match both the lamp and the SIG machine. Set the lamp to the specified distance and angle relative to the preform path; too close and you risk hot spots, too far and you stretch the heating time and destabilize the cycle. Plan replacements around scheduled downtime—quartz is brittle, and handling matters. We match the lamp to SIG, but confirm the exact model and connector before ordering.