Knife Adjustment on Flow Wrappers: The Cost of Quick Fixes

When cutting problems delay production, quick fixes are often used to get flow wrappers up and running again. But instead of saving a few minutes of downtime, these shortcuts can cost you hours of production time.

This Greener Tech Bite identifies common quick fixes that bypass standard knife adjustment procedures. Their immediate and cumulative effects cause well over half of the cutting and sealing problems that we encounter. Read more

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Pressure & Heat: Adjustments & Sealing Jaw Designs

This Greener Tech Bite reviews machine adjustments and sealing jaw designs that provide the pressure and heat* required for quality seals. You can consult additional, detailed posts and videos on each topic by clicking the red links or the corresponding images.

Quality seals on flow wrappers & vertical baggers require a combination of time, pressure, and heat, if utilized, that seals across varying thicknesses created by the fin or lap seal, gussets, or other pleats and wrinkles. Read more

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Package Diagnostics: Case 1 – Sealing Jaw Design


This Greener Tech Bite is the first in a series of case studies on the Package Diagnostic Process.

When we work with clients, sample packages provide vital diagnostic clues for troubleshooting problems on flow wrappers or vertical baggers. And even when clients don’t report problems, we use sample packages to help them discover and implement improvements that they may have overlooked—from new knife, sealing jaw, and former designs to machine adjustments that optimize the whole packaging process.
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Case Study: Resolve Cutting & Sealing Problems with Standard Operating Procedures & Training

One of Greener’s Technical Salespeople discovered that knife purchases by their customer had grown by 35% over the past year, at an additional cost of nearly $10,000. It seemed unlikely that additional production had accounted for all of this increase, which indicated to him that the customer could be experiencing problems on their horizontal flow wrappers.
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Analyzing Sealing Jaw Carbon Impressions to Troubleshoot Problems on Flow Wrappers & Vertical FFS Baggers

In this Greener Tech Bite we analyze six sealing jaw carbon impressions and explain how each was used to troubleshoot problems on flow wrappers or vertical form fill seal baggers. Read more

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Forming & Sealing on Vertical FFS Baggers: 6 Key Design & Set-Up Principles

This Greener Tech Bite, with the help of our partner Kenray Forming, explores six key design and set-up principles to help you identify the source of forming and sealing problems and develop solutions for quality packages. Read more

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Repeatable Quality and Productivity



In this blog post and Tech Bites video we outline solutions to achieve repeatable quality and productivity on horizontal flow wrappers and vertical baggers across all production shifts, multiple packaging machines, and different plant locations.
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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.

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Sealing Over Extra Layers of Film at the End Seal (part 4 of 4): Optimizing Crimper & Sealing Jaw Design

NeedThere is no one-size-fits-all solution for the design of crimpers and sealing jaws on horizontal flow wrappers and vertical baggers; they should be specified according to the packaging film, products, and conditions of your packaging operation.

This post, the last in our four-part series, reviews design options for crimpers and jaws. The optimal combination of serration patterns, materials, and special features can dramatically improve seal quality and productivity when sealing across extra film layers at the end seal. Read more

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