Cascade extrusion is the solution for high output rates while meeting high quality requirements. By connecting two extruders in series, the melting and homogenization process steps can be optimized separately and specifically—for maximum process control, flexibility, and melt quality.
Typical areas of application are film production lines and recycling processes.
Production of biaxially oriented polypropylene or polyester films for packaging and optical devices with up to 20% shredded film waste. Ensures high temperature homogeneity, stable pressure conditions, and low thermal degradation.
Processing of bottle flakes (IV 0.7-0.8) with targeted hydrolytic degradation to spinnable viscosities. With pre-filtration, melt degassing, non-stop filter, and optional booster pump.
Addition of color masterbatches, flame retardants, or UV stabilizers shortly before exiting the extruder for a short residence time and even distribution.
