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  • 1.  Overcoming Key Challenges in Slot Coating, Extrusion, and Blown Film Processes

    Posted 08-09-2024 09:21 AM

    Hi Everyone,

    In my work with slot coating, extrusion, and blown film dies, I've encountered a variety of challenges that I'm sure many of you have faced as well. Whether you're a process engineer working to optimize coating uniformity or a production manager striving to reduce material waste, these issues are common across the industry.

    I'd love to hear from others in the community about the specific challenges you've encountered. For example:

    • Achieving uniform coating across varying substrates
    • Dealing with material inconsistencies during extrusion
    • Optimizing film thickness in blown film processes

    How have you approached these issues? What solutions have worked (or not worked) for you?

    I believe that by sharing our experiences, we can collectively find better solutions and improve our processes. I'm happy to offer any advice based on what I've seen in the field.

    Looking forward to your insights and discussing how we can tackle these challenges together.

    Best regards,



    ------------------------------
    Eric Moe CPP
    Sales Engineer
    Precision Die Systems
    Chippewa Falls WI
    (715) 861-5704
    ------------------------------


  • 2.  RE: Overcoming Key Challenges in Slot Coating, Extrusion, and Blown Film Processes

    Posted 10-07-2024 12:42 PM

    Hi Eric

    For Optimizing film thickness in film extrusion, we should look on below points.

    # Die Gap uniformity

    # Nip to the die centering

    # Die level

    # Die and air ring cleanliness

    # Frost line/Stable bubble/ Center

    # Cooling rate

    # Resin quality/Types of resin/ Layer ratio/ Formulation

    Thanks



    ------------------------------
    KALPESHKUMAR SUTHAR
    Layfield canada Ltd
    RICHMOND BC
    3069995830
    ------------------------------



  • 3.  RE: Overcoming Key Challenges in Slot Coating, Extrusion, and Blown Film Processes

    Posted 03-19-2025 09:01 AM

    Hi Kalpeshkumar,

    Thanks for your insights-those are all crucial factors when optimizing film thickness in extrusion! Die gap uniformity and air ring cleanliness, in particular, can have a significant impact on maintaining consistency, especially when running multi-layer structures.

    I'm curious-have you found any particular challenges with die leveling when working with different resin formulations? Some formulations can be more sensitive to minor misalignments, leading to gauge variation across the web. Also, regarding cooling rate, have you experimented with varying air ring pressures or chiller settings to fine-tune thickness distribution?

    In my experience, even small adjustments in cooling parameters can significantly impact final film properties. Looking forward to hearing your thoughts!

    Best regards,



    ------------------------------
    Eric Moe CPP
    Sales Engineer
    Precision Die Systems
    Chippewa Falls WI
    (715) 861-5704
    ------------------------------

    Original Message


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