Today's KNOWLEDGE Share : Eliminating Gels in Plastic Film Production

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Today's KNOWLEDGE Share

Eliminating Gels in Plastic Film Production:

Gels and fish eyes are among the most common defects in plastic film extrusion tiny impurities or agglomerates that compromise optical clarity, surface smoothness, and mechanical strength.


Main causes include:

Contaminated or poorly filtered material

Discontinuous filtration

Unstable temperature or pressure during extrusion


👉 The answer lies in continuous filtration, maintaining constant pressure and removing impurities without stopping production.


One of the most remarkable features of our AP series (https://lnkd.in/dJrHhs66) is its ability to remove gels and fish eyes during film production.


This is possible thanks to:

🔹 Cylindrical filters with a particularly large filtration area

🔹 The use of metal non-woven mesh, with filtration capacity from 3 to 100 µm

🔹 Exceptionally effective removal of micro-defects

With traditional flat filters, these meshes cannot be used — back pressure would simply be too high.

✅ Fewer impurities

✅ Cleaner, more homogeneous films

✅ More stable and efficient extrusion

Efficient filtration means superior product quality.


source : Alessandro Fabbri -Cofit


#plasticprocessing #extrusion

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