Troubleshooting Cross-Machine Direction Moisture Profile Problems

Poor cross-machine direction (CD) moisture profiles result in non-uniform paper end-use properties, converting problems, and poor runnability in the form of wrinkles and breaks. Fiber costs (such as heavy edges) and energy consumption can be higher than when moisture is more uniform.

Final moisture profiles reflect complex interactions between headbox, forming, pressing, drying, and gauging and control systems. Many CD moisture profile problems originate in the press section, although they can also be caused by dry weight profile, forming, or drying problems.