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Good headbox flow sheet handling and installation prevent damage

Flow sheets are a critical part of headbox performance. They are brittle and must be handled with care. Flow sheets are used to adjust the turbulence level and scale generated in the headbox.

Reading fluids circuit diagrams - pneumatic circuit examples

The previous articles in this series introduced fluids circuit elements and presented example hydraulic schematics. This article describes two example pneumatic schematic diagrams: winder lowering cradle safety pins and winder belted threader operation.

Chronic dryer drive oscillation and worn couplings, a case study

The clack-clack-clack noise warned of heavy oscillation in the drive, subjecting the machine to potentially damaging duress. The only known cure was a shutdown and restart, costing the mill productivity and dollars. The shift supervisor calls in a drive technician for assistance...

Electrical troubleshooting basic tips and fault cataloging

Effective electrical troubleshooting is best done using a practical, systematic approach. This article is a brief review of basic tips and fault cataloging.

Sizer applicator beam not unloading at sheet break, a case study

When a sizer applicator beam refuses to unload properly, it presents a personnel and equipment safety risk. This case study follows the diagnosis and ultimate identification of the problem - at the TS cylinder rod end packing assembly.

Steam and condensate system audit for tissue machine Yankee dryer

The steam input and condensate removal system is integral to the efficient and effective operation of your Yankee dryer. A system audit shows the current operating level and provides savings recommendations.

Proper setup of a pressure compensate pump and dump valve

Many hydraulic systems on the paper machine use pressure compensated pumps. Pump and pressure compensator adjuster setup is easy if you know what you are doing.

Importance and limits of hardness in wound roll quality

Building a good roll requires controlling hardness. Hardness is dependent on paper characteristics and the tension distribution throughout the wound roll.

Make slitter adjustments safely, provide better paper quality

Operators must check and adjust slitters in a safe manner regularly for slitter positioning systems to perform well, including gap, sideload, overlap and angle.

Improved drying - Reduce thermal resistance with spoiler bars

Spoiler bars increase drying capacity up to 30%, with improved drying uniformity and CD moisture profile control. A kraft bag case study demonstrates.