Fiber and film industry

Filtration of the spinning solution in the viscose process

Reliable viscose filtration for stable spinning processes

Filtration of the spinning solution in the viscose process is a key step in the production of high-quality viscose fibers, films, or sausage casings. Impurities such as gel particles, undissolved components, or very fine particles can cause disruptions in the spinning process or during extrusion and compromise the quality of the end products.

Efficient viscose filtration for purifying the spinning solution is therefore crucial to ensuring consistent product quality and a stable production process.

High demands on the filter technology used.

The filtration of viscose spinning solutions places particularly high demands on the filtration technology used due to the high viscosity, the presence of gel particles and fine impurities, the sensitivity of the spinnerets to solids, and the need for a continuous, stable, and reproducible process.

Effective filtration in the viscose process is crucial for preventing nozzle blockages, fiber breaks, and production downtime.

Consistent quality of the spinning solution with minimal scrap rates.

Optimally designed filtration in viscose production ensures a consistently high level of purity in the spinning solution. This is the foundation for stable processes, reduced scrap rates, and high-quality viscose fibers, films, or sausage casings.

The LENZING ViscoFil automatic backwash filter was developed specifically for the filtration of high-viscosity media.

The use of multi-layer metal fiber fleece with filtration finenesses of up to 3 µm reliably removes both particulate impurities and gel particles. The integrated backwash technology enables continuous filtration of the spinning solution without downtime.

The solution: LENZING ViscoFil

Reliable and cost-effective spinning solution filtration, particularly well-suited for the viscose industry.

  • 30 – 3 µm finest metal fiber fleece
  • 0.1 – 10 m³/h Throughput per filter
  • several monthscontinuous operation
Process of viscose filtration
Simplified process diagram for installing a LENZING ViscoFil system.

Filtration of the spinning solution in the viscose process

Advantages of using a LENZING ViscoFil system.

Efficient gel and particle separation

Ensuring a consistently high level of purity in the spinning solution.

Stable spinning process

Reducing nozzle clogging and fiber breakage maximizes equipment uptime.

Minimal product losses

Efficient backwash technology reduces waste volumes.

Low maintenance requirements

Automated operation without frequent intervention.

LENZING ViscoFil

The LENZING ViscoFil system was developed for separating fine particles and soft gel particles from highly viscous fluids.

Its unique backwash mechanism enables the use of depth filter material with minimal backwash volumes and continuous filtration.

Suitable for very high viscous fluids
Filter fineness down to 3 μm
Filtration of gel particles
Completely closed system

Learn more

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Are you looking for sustainable solid-liquid filtration solutions for your individual process? Our experienced team looks forward to supporting you with your project.

Team Lenzing Filtration

Team Lenzing Filtration

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[email protected]

+43 7672 701 3479

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