Stop the Burn-Out Cycle in Your SIG Blomax Ovens
If you’re running SIG Blomax lines, you know the headache of lamps burning out. It’s frustrating. You’re in the middle of a run, and suddenly you’re dealing with downtime because of thermal shock or a weak quartz envelope. We got tired of seeing that happen, so we built a replacement lamp that actually holds up. No fancy modifications needed—they just drop right in. The Heat Struggle PET blowing ovens are brutal on equipment. To keep your cycle times fast, you need high wattage density to get those preforms to the right temperature quickly. The problem? That puts a massive amount of stress on the filament. To fix this, we used a reinforced tungsten filament. It’s designed to handle those aggressive on-off cycles without giving up the ghost. Built Like a Tank Most standard tubes fail at the pinch seal or where the connector hits the glass. It’s the weakest link. We switched to heavy-wall quartz glass. It distributes the thermal stress much better and can take a beating from the constant vibration of the oven. Plus, they fit your existing sockets perfectly. You won’t have to mess with your wiring or change your oven layout. It just works. A Few Things to Keep in Mind Here’s the trade-off: because the glass is thicker, the infrared transmission changes a tiny bit. You might need to nudge your power settings up or down by a few percentage points to get your heat profile exactly where you want it. It’s a quick tweak for a lot more uptime. And a pro tip? Check your cooling blowers. If they’re clogged with dust, no lamp in the world—no matter how reinforced—will survive the overheat. Keep the air moving, and these tubes will last you a long time.