Glass score line heating lamp

Sat, 18 Jul 2026 02:42:31 +0800

Getting the Balance Right: IR Heating, Glass Strength, and Clean Lines

When you’re tempering glass right after screen printing, you’re basically walking a tightrope. You need enough heat to fuse that ink into the surface, but not so much that the pattern starts bleeding or the glass itself warps. It’s a tricky window to hit. That’s why we lean on shortwave IR lamps. The battle for a sharp edge The real headache here is the heat-up rate. If you take too long to get the glass hot, the ink just won’t bond. But if you push too hard? The ink burns or you end up with internal stress in the glass that you really don’t want. We set up these lamps to pack a lot of power into a very small area. It lets you aim the heat exactly where it needs to go—the score lines and the printed parts. By tweaking the wattage and the focal length, you can keep those edges crisp and clean while still getting the glass hot enough to soften. The gear and the heat We usually go with quartz-halogen tubes for these lines. They can handle the brutal temperatures needed for tempering, and they react fast. Like, really fast. You can flip them on or off in a heartbeat, which is a lifesaver when you’re adjusting the conveyor speed on the fly. But there’s a catch. These lamps put out a massive amount of heat. If your cooling blowers aren’t up to the task, the tunnel becomes an oven. Once that ambient temperature climbs too high, you’ll start seeing “over-bake” on the edges of your glass sheets. Not a great look. The trade-off Putting everything on one integrated line is great for saving floor space, and you lose less heat between steps. It’s efficient. But you lose some wiggle room. Once you’ve dialed in the belt speed and lamp intensity for a specific thickness of glass, you’re locked in. If you switch to a different product, you have to stop and recalibrate the whole thermal profile. You’re basically trading versatility for raw speed.

Line on Global Warm IR Heating

Glass score line heating lamp

Getting the Balance Right: IR Heating, Glass Strength, and Clean Lines