Polymer Leaf Disc Filter in 316L Stainless Steel (AISI 316L (1.4404)) is used for filtering polymer melt for film, fiber and engineering resins in stacked leaf disc filters that pack large filter area into a compact housing. The alloy gives superior resistance, including chlorides, brines, food CIP and mild acids and is essentially non-magnetic, with a practical service limit of approx. +550 °C continuous.
Alloy Properties
| Grade designation | AISI 316L (1.4404) |
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| Magnetic response | Essentially non-magnetic |
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| Service temperature | approx. +550 °C continuous |
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| Corrosion characteristic | Superior resistance, including chlorides, brines, food CIP and mild acids |
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Specifications of Polymer Leaf Disc Filter Available in 316L Stainless Steel
| Size | Diameter (mm) | Center hub ID (mm) | Micron rating (u00b5m) | Media | Filter area (mu00b2) |
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| 7 in | 178 | 38 | 20 | Sintered fiber felt SS316L | 0.045 |
| 10 in | 254 | 76 | 10 | Sintered fiber felt SS316L | 0.085 |
| 12 in | 305 | 76 | 5 | Sintered fiber felt SS316L | 0.125 |
| 12 in mesh | 305 | 76 | 25 | Twill dutch weave SS316L | 0.125 |
Where 316L Stainless Steel Polymer Leaf Disc Filter Is Used
- BOPET & BOPP film: melt filtration for optical and packaging film.
- Polyester & nylon fiber: continuous polymerization melt filters.
- Engineering plastics: PC and PET bottle-grade resin.
- Recycled PET: high-purity rPET melt.
Ordering Polymer Leaf Disc Filter in 316L Stainless Steel
- Disc size: 7, 10 or 12 in diameter with the housing hub size.
- Micron rating: 3–40 µm; finer for optical film.
- Media: Sintered fiber felt for depth; dutch weave for surface filtration.
Mistakes to Avoid with Polymer Leaf Disc Filter
- Skipping integrity tests after cleaning.
- Mixing disc ratings in one stack.
