Headbox Screens

MaxFlow-HB™ and B-Series Screens

“Operators comment on worry-free screening and having more time for other concerns.”

Geoff Richardson, Iggesund

Screening internals tailored for your application

AFT offers headbox screens in both inward and outward flow designs, including the MaxFlow-HB outflow pressure screen and the B-Series inflow screen. Both have been proven around the world with tailored cylinder and rotor selections to best fit mill specific papermaking objectives.

Outflow headbox screening

The MaxFlow-HB headbox screen is a high-efficiency outflow screen. The unit typically includes an EP™ rotor and MacroFlow™ slotted screen cylinder or a Drilled cylinder. The specific rotor and cylinder selection will depend on the fiber furnish and the quality specification for the paper being manufactured.  Our applications engineers work closely with a mill to collect data and predict operating results using our proprietary SimAudit™ process simulation tool.

Headbox screens are delivered with a very smooth surface finish to prevent build-up of fiber bundles or other particles that can potentially cause pinholes and web breaks on the paper machine.

MaxFlow-HB

MaxFlow HB Screen

 

B-Series

Aikawa B Screen

Inflow Headbox Screening

B-series screens employ an inward flow design providing the most advanced, pulsation-free approach flow screening. The inward flow design was first introduced to the world in Japan and today makes up over 90% of their  headbox screens. This concept has grown in popularity - especially in headbox applications due to the low pulsation - and now accounts for about one-third of the world’s headbox screens.

The inward flow design has also gained popularity in fine screening applications, particularly in Asia. The B-Series is actually composed of 3 major models: B, BF and FH. The primary difference between these models is the available tip speed. Coupled with the correct cylinder and rotor selection for a given paper quality and fiber furnish, this screen delivers on efficiency and energy savings.