Tired of Replacing Lamps on Your SIG Blomax Line?
Let’s be honest: there is nothing more frustrating than walking up to your PET line only to find another burnt-out IR tube. It’s not just the cost of the part. It’s the downtime, the annoyance of the swap, and that nagging feeling that you’re just fighting a losing battle. Usually, the culprit isn’t the lamp itself—it’s the stress.
Why they keep snapping
Here is the thing about standard IR tubes. They go through a brutal cycle of heating up and cooling down. Over time, that constant expanding and contracting puts a massive amount of pressure on the pinch seals and connectors. Eventually, they just give up. We decided to fix that. We beefed up the quartz envelope and tweaked the filament tension specifically for the chaos of PET blow molding. By playing with the wall thickness and using higher-purity quartz, we made a tube that doesn’t warp when things get hot. It just holds its shape.
No need to rewire anything
You don’t have to spend your weekend modifying your oven or messing with reflectors. These are simple drop-in replacements. We matched the original SIG dimensions and wattage exactly, so they just fit. One quick tip: if you’re pushing higher wattage, your power supply is going to feel it. Also, make sure your cooling fans are actually clean. If those fans are clogged with dust, your lamp ends will overheat regardless of how tough the tube is.
What this looks like in the real world
When you move away from the basic OEM tubes, you’ll notice the heat profile across the preform stays a lot more stable. That means fewer “thin spots” in your final bottles and a lot less guesswork. Just a heads-up: because these tubes are reinforced, they aren’t as “bendy” as the cheap ones. Be gentle when you’re seating them into the clips. Don’t force them—just slide them in carefully to avoid any mechanical stress. It’s time to stop treating lamp replacement like a weekly chore. Switch to something that can actually handle the heat, and get your maintenance schedule back to something predictable.