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OptiFiner Deflaker

OptiFiner Deflakers ensure excellent deflaking and defibering in bale pulping lines, broke lines and for wet-strength grades.

Valmet's OptiFiner Deflakers are designed to ensure homogeneous stock for further processing through defiberizing of fiber bundles and flakes utilizing pulsation and the friction between the fibers. Proven OptiFiner Deflakers feature a controllable fillings gap to efficiently break down the fiber bundles and flakes.

Deflaking offers a tool to eliminate process disturbances in an early process stage. By eliminating large particles from broke, deflaking contributes to a reduced number of web breaks and less screening rejects.

Typically, deflaking is applied in CTMP, flash-dried bale pulping, in various coated paper and board machines as well as in tissue broke lines

Excellent deflaking result for optimal fiber treatment in subsequent processes

  • Completes slushing and ensures desired refining result by breaking fiber bundles and releasing fiber bonds
  • Conical fillings create efficient turbulent flows
  • Adjustable, conical fillings gap increases deflaking efficiency
  • Reduced number and size of flakes and fiber bundles, particularly in broke systems for wet-strength, tissue and similar demanding grades, increases broke line efficiency

Less reject from screening

  • Reduced number and size of flakes and fiber bundles

Flexible operation and easy maintenance

  • Wide capacity area: three machine sizes with 3-4 motor options for each machine size
  • Durable, proven design that is also utilized in OptiFiner Conflo refiners
  • In-house fillings design and manufacturing and long parts lifetime