Preventing Costly Web Breaks and Quality Variations: Controlling Pressure Drops During Wet End Additive Filtration, 2001 Papermakers Conference Proceedings
To stay competitive and profitable, papermakers today are looking for increased productivity and quality. They must reduce waste and variability, add value to their product and, at the same time, find ways to reduce the maintenance required on their machines. This challenge is complicated at the wet end of the paper machine, where some processes are at particular risk for product quality problems and variability because of pressure drops, which often occur during filtration. For these types of pressure-sensitive processes, papermakers should consider a filter that eliminates any discernable pressure drops during filter purging. This paper reviews a mechanically cleaned filter with a stealth purge feature that minimizes downstream pressure and flow variations. Isolation of the pressure drop during the purge sequence will be graphically illustrated.
Preventing Costly Web Breaks and Quality Variations: Controlling Pressure Drops During Wet End Addit
