BB Engineering improves Visco+ filter for VacuFil PET recycling system

VacuFil BB Engineering’s VacuFil liquid-state-polycondensation system processes PET waste so that it can be used in high-end filament and textile fiber products. To achieve a high degree of melt homogeneity, it uses drying; controlled plasticizing; large-scale filtration; and controlled vacuum degassing. The system includes an inline viscosity measuring unit connected to a vacuum system; this allows the system to continuously adjust the intrinsic viscosity (IV) of the resin to create the specific type of recycled polyester required for each application. It can process bottle flakes, agglomerated spinning waste or a combination of the two into PET granulate, or it can feed downstream processes. 

What’s new? An upgrade to a key component, the Visco+ vacuum filter, which removes volatile contamination and ensures a controlled increase in the IV. The new version has a larger filter area and is available as an easily installed component for existing VacuFil systems, as well as for competitors’ PET processing systems.  

Benefits Efficient production of a homogeneous, pure polymer melt. The new filter’s larger surface area improves filter performance, allowing more contamination to be removed without affecting throughput. The Visco+ can be installed in systems that are struggling with IV fluctuations, balancing out irregularities. It also can be used to increase the IV of recycled materials without the negative effects of long residence times. 

BB Engineering GmbH, Remscheid, Germany, 49-2191-9510-100, www.bbeng.de