Spin Pack Filter Disc is selected when an assembly or process calls for filtering polymer just before the spinneret in synthetic fiber spin packs with small multi-layer rimmed mesh discs, catching gels that would break filaments. This application guide to the Custom to spin pack type covers concrete end-uses, the specification checklist, correct installation, and where an alternative mesh or filter medium performs better.
Typical Applications for Spin Pack Filter Disc
Where Spin Pack Filter Disc is specified and bought:
- Polyester (PET) fiber: FDY, POY and staple spin packs.
- Nylon & polypropylene: BCF carpet yarn and nonwoven spin packs.
- Technical fibers: aramid, spandex and high-tenacity yarn.
- Meltblown nonwovens: die filters.
How to Specify Spin Pack Filter Disc for Your Application
- Shape: Round or annular discs to fit the pack body.
- Layer build: Graded mesh layers, sometimes with sintered or fiber-felt layers.
- Rim: Aluminum, stainless or welded double rims for a reliable seal.
- Standard: Quote Custom to spin pack and the size designation from the table on the product page, plus any value you changed in the technical drawing.
Handling & Installation Practice
- Fit new discs at every pack change and check rims for damage.
- Assemble packs in a clean area to avoid contamination.
Common Selection Mistakes with Spin Pack Filter Disc
- Re-using discs between pack changes, which releases trapped gels into the filaments.
- Putting the fine layer on the upstream face, where it blinds within hours.
Where Spin Pack Filter Disc Is Not the Right Choice
Not for bulk melt filtration upstream, where candle or leaf filters are used.
