Picking the Right Infrared Heater for Bobst Gluers and Sulfet Machines
Here’s the thing: we built these infrared heaters to solve one headache—getting that glue line hot, fast, and keeping it there. If you’re running a Bobst carton gluer or a Sulfet rotary line, you need a heating element that just drops in and does the job. It has to keep up with the cycle times and the heat, without giving up and burning out on you.
Power, Voltage, and Size
Our standard tubes run on 400V, at 2500W, and measure 300mm long. That combo packs a lot of heat into a small space, so the glue line hits operating temperature quickly. And the 300mm length? It lines up with the spacing on most gluer and Sulfet heating blocks. So you can swap the lamp without messing with the reflector setup. But there’s a trade-off. A 2500W tube throws off a lot of heat, so your machine’s cooling and airflow need to be up to the task.
The Quartz Halogen Build and the R7s Connection
We use a quartz halogen tube with a reflective coating. Quartz handles rapid heating and cooling way better than glass, and the halogen fill keeps the filament resistance steady over time. That coating focuses the energy right where you need it—down onto the glue line. Less wasted heat means less stress on the parts around it. The R7s connector is a simple, straight, bi-pin design that clicks into the holder with a solid fit. It carries high current safely, so the lamp is a direct replacement. No adapters. No loose connections. No hot spots at the terminals.
How It Performs in the Real World
On a Bobst carton gluer, this lamp hits the adhesive bead the moment it contacts, keeping the viscosity steady—even during high-speed runs. On a Sulfet rotary printer, the same heater profile fits the rotating station without getting in the way of the motion. The payoff? Stable temperature control. Strong, consistent bonds. And fewer surprise stops that throw off your whole day. If you need a Sulfet-compatible solution that ships fast, this setup is built to plug in, work hard, and keep your line moving.