© 2008 Buschman Corporation

Dura-Life Performance Study:
Hard Chrome Smoothing Rods

CHALLENGE: The purpose of the trial was to run Buschman 20mm smoothing rods on a Rod Metering Size Press. The customer used Light Weight Coating (LWC) on fine papers.

Success was pre-defined to include two objectives:

  1. Apply a smoother, more uniform coating coverage.
  2. Increase rod life versus rods provided by the OEM.

RESULT: Buschman rods achieved both objectives with outstanding results, as Buschman rods performed well for 6 weeks (50% increase) and could have gone longer, but the machine was stopped for maintenance not related to the rod.

Key Application Parameters:

  1. The customer makes magazine & other specialty grades of paper from LWC, which is mostly white clay.
  2. Rod & holder life is typically around 4 weeks.
  3. Purchases rods and holders from the OEM.
  4. Smoothing rods used in both the top & bottom position.
  5. Machine Speed 1310 Meters per minute
  6. Rod Load Pressure 20-35 PSI
  7. Rod speed is 75 RPM
  8. Backing roll hardness 45 P&J Polyurethane
  9. Percent of solids: 58-61%
  10. Dry Coat Weight 13-15 g/m2
  11. Basis Weight: 30-50 g/m2

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