Solving Cutting Problems on Flow Wrappers During Production

When cutting problems occur on horizontal flow wrappers during a production run, what are the best procedures to get packaging lines up and running again and to keep them running? Minimizing downtime, producing consistent quality packages, and managing costs require a balanced approach that includes:

  • Knowing which “quick-fix” adjustments will get knives cutting without causing additional problems and downtime. (Faster and easier is not always the best solution.)
  • Broad-based, P3 Solutions that consider the entire packaging process to:
  • Understand how each adjustment affects the whole system.
    Eliminate procedures that don’t work.
    Diagnose and correct the ultimate causes of problems. (Many issues stem from a combination of factors.)
    Implement solutions that help prevent cutting problems from occurring in the first place and help you Pursue Zero.

When Knives and Anvils Stop Cutting:

The following procedures can help to get knives cutting again or, if knives and anvils need to be replaced, to refine the installation process. In either case, these guidelines will reduce downtime and optimize long-term performance.
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Optimizing Knife and Anvil Set-Up on Horizontal Wrappers

Set-up procedures for knives and anvils can vary according to the make and model of the packaging machine, knife adjustment style, and other factors. There are, however, some general principles that make these adjustments more effective and efficient, reducing downtime and parts costs.


Diagonal Zig Zag Knife for Horizontal Wrapper_Greener Corporation
  Optimize Knife Design

  • Knives ground on a diagonal, or bias–whether they have a zig zag or a straight cutting edge–require less pressure to cut so they are easier to set up and typically last longer.
  • Zig zag knives with smaller (more) teeth are also easier to set up and provide longer life.

  Set Up the Crimpers First

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