Single screw extruders and cascade systems are used in all modern Brückner biaxial stretching systems. Over the past years, Brückner Servtec has conducted very successful upgrades with coextrusion enhancements for various customers around the world, using single screw extruders with a multi-purpose or a special-purpose screw design.
The single screw extruders are available for PP, PET and PA films. The cascade systems are also suited for PET optical and PP-Capacitor lines.
They are the best precondition for high process constancy, high melt quality and the production of multilayer films with the highest quality. The output amounts to 1,200 kg/h for PP-Capacitor film and 6,000 kg/h for PET optical film.
Single-screw extruders, special melt filters, pumps and melt pipes that can be found in many of Brückner Maschinenbau’s film stretching lines and in Brückner Servtec’s upgrading projects all come from BB Engineering.
Accurate and gentle process control
Optimal homogeneity by dynamic mixers
Low thermal and mechanical stress and short residence time