Air Curtain Solutions for Cleanroom and Controlled Areas
Cleanroom design gets a lot of things right. HEPA filters in the ceiling. Gowning protocols at the entrance. Pressure cascade between zones. Regular particle count monitoring. And then there's the doorway — where air from two different environments meets every time someone walks through — and that transition is often managed with nothing more than a swing door and hope. Air curtains change that. In controlled environments, a well-specified air curtain at the right doorway doesn't just add convenience. It actively reinforces the contamination barriers the rest of the facility was designed to maintain. Why Controlled Areas Have a Doorway Problem The physics of a cleanroom doorway is straightforward — and inconvenient. When a door opens between a cleanroom corridor and an adjacent lower-grade area, the pressure differential that normally keeps contamination out momentarily equalises. Air from the lower-grade side pushes in. Particles, humidity, and microorganisms travel ...