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        Cover Story                                                                                                                                                                                                                     Cover Story


















                     Customized polyester thanks to




                    viscosity build-up in the VacuFil




                                           recycling line                                                                                                                                                                                                                                               and the careful utilization of resources – increasingly   fibers, nonwovens and BCF endless filaments. Today,
                                                                                                                                                                                                                                                                                                        in the textile sector as well. Leading fashion
                                                                                                                                                                                                                                                                                                                                                          the technology is so refined that the products
                                                                                                                                                                                                                                                                                                        companies, sports apparel and furniture
                                                                                                                                                                                                                                                                                                                                                          achieve a quality standard that corresponds to virgin
                                                                                                                                                                                                                                                                                                        manufacturers and the automobile industry, i.e. for
                                                                                                                                                                                                                                                                                                        car seats and interior cladding components, are   material in many applications.
                   The BB Engineering VacuFil process                                                                                                                                                                                                                                                   increasingly focusing on sustainable products and   However, there are also many cases in which the
                                                                                                                                                                                                                                                                                                                                                          material quality and/or property achieved does not
                                                                                                                                                                                                                                                                                                        products made from recycled materials. Today, they


                                                                                                                                                                                                                                                                                                        are already telling suppliers of filaments, fibers and


                                                                                                                                                                                                                                                                                                                                                          comply with the market requirements. For numerous
                   enables the reutilization of polyester                                                                                                                                                                                                                                               nonwovens that they will be switching from        textile applications, parameters such as viscosity and

                                                                                                                                                                                                                                                                                                                                                          homogeneity are crucial and must be subject to
                                                                                                                                                                                                                                                                                                        exclusively virgin polyester to recycled polyester – in

                                                                                                                                                                                                                                                                                                        some cases up to 100 percent – for the manufacture
                                                                                                                                                                                                                                                                                                                                                          virtually no fluctuations. In other words, to enable

               waste into high-end textile filament and                                                                                                                                                                                                                                                 of their textile products in the near future.     recycled polyester to be used here in the first


                                                                                                                                                                                                                                                                                                                                                          place necessitates its pre-treatment. And this is


                                                                                                                                                                                                                                                                                                        Consumers’ social awareness has been the trigger


                                                                                                                                                                                                                                                                                                                                                          carried out by the VacuFil recycling process, a


                                                                                                                                                                                                                                                                                                        for this development.
                                            fiber products                                                                                                                                                                                                                                              The original idea – namely to manufacture         BB Engineering GmbH development. The                                  In the downstream processes, the melt can either be   Si

                                                                                                                                                                                                                                                                                                                                                          VacuFil enables the manufacture of extremely


                                                                                                                                                                                                                                                                                                        sub-premium goods using recycled polyester raw    homogeneous, viscosity-stable rPET melt and                           first granulated or fed directly into the end product’s
                                                                                                                                                            +
                                                                                                                                                         Visco  filter components – the heart of the BB Engineering’s VacuFil recycling system                                                          material, i.e. for use in insulating materials – is   hence a precisely definable and reproducible                      manufacturing process. Recycled polyester,        manmad
                                                                                                                                                                                                                                                                                                        short-sighted from today’s perspective. Recycled   raw material for downstream processes (i.e.                          produced using the BBE VacuFil process, can even   Remsc

                                                                                                                                                                                                                                                                                                        polyester has long been prevalent within the high-end   spinning plant). As a manufacturer of                           be used for more challenging downstream           develo


                                                                                                                                      Sustainable handling of natural resources is a   as beverage bottles, cleaning materials, etc. As a                                                               textile segment. Viewing polyester as a valuable   components and systems for producing                                 processes, including the manufacture of FDY       partic
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  contem
                                                                                                                                                                                                                                                                                                                                                                                                                                filaments, for example. Here the material is subjected
                                                                                                                                      global task, something that needs to be addressed   raw material that is – along with polyolefins and                                                             resource rather than as waste is an important and   manmade fibers, BB Engineering (BBE) is                             to extreme loads throughout the entire manufacturing   f
                                                                                                                                      now and not just in the future. This relates in   polyamide – such a dominant raw material, it is                                                                 proper development.                               familiar with the dire impact that even the                           process. In the FDY single-stage process, the     indust
                                                                                                                                      particular to the further development of the circular   essential that polyester is also recycled.                                                                                                                  smallest viscosity deviation has on the spinning                      filaments are drawn and taken up at speeds of up to   ki
                                                                                                                                      economy for post-consumer or post-production                                                                                                                      Manmade fibers and filaments made from recycled   plant process. With the VacuFil, the company                          4,500 m/min.                                      Oerlik
                                                                                                                                      waste. For this reason, the recyclability of PET   For PET bottle material, the recycling of polyester                                                            bottle flake material require corresponding       has succeeded, depending on the intended end                                                                            leader
                                                                                                                                      products made by the manmade fiber industry is   materials and the possibilities for converting the                                                               single-variety collection or pre-sorting of the bottle   application, in aligning the melt with the process in          BBE is headquartered in Remscheid/Germany and is   BBE c
                                                                                                                                      attributed special significance. Modern         waste into new high-end products within the                                                                       material being recycled and comprehensive cleaning   a targeted manner. Macro- and microscopic melt                     a joint venture between Brückner Group GmbH, the   area
                                                                                                                                      resource-friendly packaging would not be        polyester filaments, fibers and nonwovens market                                                                  before they are shredded into polyester flakes. It is   homogeneity is achieved by means of                             world market leader for machines for the polyester   con
                                                                                                                                      conceivable without manmade PET fibers and      are state-of-the-art. Across the globe, consumers in                                                              then possible to spin these flakes directly into POY   homogenization drying, controlled plasticizing, gentle           foil industry and headquartered in                Schäfe
                                                                                                                                      commodities generally made from chemicals, such   the markets are demanding sustainable products                                                                  filaments (DTY in the downstream process), staple   filtration and controlled vacuum degassing.
                April/May 2021                                                                                                                                                                                  April/May 2021
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