Polyester filter medium

polypropylenePTFEliquid

Product overview
Sefar Nutsche filter bags and discs for solid–liquid separation in Nutsche filter dryers. Available in polypropylene (PP), PET, PEEK and PTFE media, precision laser-cut to size and designed for GMP-compliant pharmaceutical and chemical processes.

Main benefits

• Reduced downtime: Durable materials and precise fit extend service intervals and simplify maintenance.
• Optimized handling: Custom flanges/skirts and exact dimensions enable fast installation, easier cleaning and improved product recovery.

The right solution for your filtration
Sefar Nutsche filter bags and discs are engineered to minimize product loss, enable consistent cake release and support fast changeover. Precision fit and tailored materials ensure reliable filtration performance across demanding production cycles.

Product types

• Agitated Nutsche discs: Laser-cut filter discs for optimal fit, effective cake discharge and extended service life in agitated Nutsche filters.
• Agitated Nutsche bags: Custom-fit bags with flanges or skirts for secure sealing, high recovery and dependable operation under agitation.

Filter media technology
Sefar offers double-layer (DLW®), monofilament (MONO®) and multifilament (MULTI®) fabrics in a range of polymers (PP, PET, PEEK, PTFE). Selection of filament type and weave pattern allows tuning of permeability, cake release and filtrate clarity.

Highlights and manufacturing features

• Laser cutting: Exact dimensions and clean edges for reliable sealing and consistent sealing surfaces.
• Custom flanges: Tailored flange and skirt options for secure installation and handling.
• Unique ID marking: Individual marking for full traceability supporting validation and replacement.
• Integrated backer: Optional backer layer for improved mechanical strength and drainage.

Key product features

• Filter efficiency: Pore sizes from 5–150 µm to match a wide range of slurries and particle-retention needs.
• Chemical & thermal resistance: Material choices to meet specific process chemical and temperature requirements.
• Material compliance: Options and processes supporting food-contact and pharmaceutical GMP requirements where specified.
• Mechanical properties: Engineered for heavy loads and rotation with optimized strength and dimensional stability.

Supported equipment manufacturers

• Bachiller
• Comber
• Delta
• Heinkel
• Mavag
• Waldner

Downloads
Product literature and technical brochures (process filtration overview, pharma GMP solutions) available as PDF resources on the product page.

Specifications / technical data

• Pore size range: 5–150 µm.
• Available polymers: polypropylene (PP), polyethylene terephthalate (PET), PEEK, PTFE (selection by application).
• Fabric types: double-layer (DLW®), monofilament (MONO®), multifilament (MULTI®).
• Manufacturing features: precision laser cutting, custom flanges/skirts, integrated backer layer, unique ID marking for traceability.
• Compliance: GMP-ready design and materials meeting food-contact and pharmaceutical regulatory requirements where specified.
• Compatibility: Designed for use with a variety of Nutsche filter dryers and equipment from leading manufacturers listed above.