Fixing those annoying heat gaps in your KHS Blow Molding
Ever pull a bottle off the line and notice the walls are uneven? Or worse, the whole thing is deformed? It’s frustrating. Usually, it comes down to the heating. We see it all the time. Your original lamps get old, or someone tries to save a few bucks with cheap replacements, and suddenly you’ve got “cold spots” in your oven. Here’s the thing: just matching the wattage isn’t enough. If the infrared emission isn’t dialed in, you’re just guessing.
Getting the heat right
When we build our replacement lamps for Aoki and KHS systems, we obsess over the spectral output. We tweak the quartz thickness and the halogen gas pressure to keep the heat steady from one end of the tube to the other. Why does that matter? Because it stops that classic headache where the middle of the preform is scorching while the base is still cold. You get a smooth, flat heat curve. No surprises.
The nuts and bolts
These are simple drop-in replacements. We’ve made sure they fit your existing oven racks perfectly, so the connectors snap in tight without any scary arcing. We use heavy-duty quartz, too. These tubes have to survive constant heating and cooling without warping, and these can take the heat.
A few things to keep in mind
More heat density means you can run your line faster. That’s great, but it does put more pressure on your cooling blow-air. And a word of caution: don’t try to “fix” a dying oven by just cranking up the wattage. You’ll end up scorching the PET. Plus, do yourself a favor and clean your reflectors before you swap the lamps. A dirty reflector can make even the most expensive lamp look like a piece of junk.
Pro tips for installation
When you’re wiring these up, just stick to your machine’s voltage specs. And here is a big one:**do not touch the quartz with your bare hands.**The oils from your skin create tiny hotspots that will burn the tube out way faster than it should. Keep a steady replacement schedule. It’s the only way to make sure every zone in your oven is doing its fair share of the work.