Extrusion International 4-2022

39 Extrusion International 4/2022 the plant operator's entire production chain and can support up- and down- stream components such as slitters, metallizers, crane systems and more. To increase the sustainability of film production, Brückner Servtec is show- ing a wide range of modernization measures that reduce energy con- sumption while increasing output and film quality. This significantly extends the lifecycle of production equipment. Among others these are: • Direct drives for all significant line drives from extrusion to winder to reduce power consumption while improving film quality through opti - mized speed and torque control • Smart Swivel Roll intelligently cools the film in the water bath at the chill roll by adjusting its position based on film thickness and output. Thus, reducing the heating – and en- ergy use – at the following MDO to a minimum • New Control Systems not only re- place obsolete hardware for produc- tion safety but moreover install latest software for an easy, efficient and en - ergy saving line control • Expert audits for process and en- ergy optimization in film production Brückner Servtec GmbH www.brueckner-servtec.com K 2022: Hall 3, Stand C90 Line Upgrades Improve Production Sustainability I n the fight against climate change, it will not be possible to do without plastic packaging that is produced in a way that conserves resources in the foreseeable future. That is why Brück- ner Maschinenbau is sticking to its ambitious goals for further increasing efficiency in film production in addi - tion to the developments for the rap- idly developing circular economy. This means decreasing raw material use, ever lower energy consumption and "zero waste" in film production. Faster and wider BO plants The more efficient and higher out - put a film stretching line is, the lower the specific energy consumption. These parameters can mainly be influenced by the line speed and the line width. BOPP and BOPET: In the production of the two most popular packaging films, BOPP and BOPET, the benchmark in production speed has so far been around 600m/ min. At K 2022, Brückner Maschinen- bauwill present new line concepts with significantly higher running speeds. BOPA: BO films made of polyamide are particularly suitable for packaging oily, fatty foods and for frozen foods. The demand for this is continuously increasing and with it the demand for corresponding film stretching lines. At K, Brückner Maschinenbau will present new line types with up to 80% more output – based on an increase in production speed from 220m/min to 350m/min and a line widening from 6.6m to 7.4m. Battery separator foils and capaci- tor foils: In these segments, the previous (al - ready exclusive) line width of 5.5m is being increased step by step to over 6m and the associated increase in output of over 20%. In addition, both the sequential and the simultaneous stretching technology for capacitor films were further developed: the fo - cus was on higher film yield and op - timised film properties, especially for films in the 2 µm range. Technical innovations for more sustainability in film production Direct recycling: Thanks to a new type of "direct fluff Ddosing", the edge trimmings and waste produced during produc- tion can be directly fed back into the extrusion process in a higher percent- age – without any prior re-granula- tion process. This saves energy, con- serves raw material and comes very close to the goal of "zero waste" in production. Intelligent stretching oven manage- ment: Instead of the heat exchangers pre- viously used for heat recovery, a pat- ented, energy-efficient oven control system across all temperature zones of the stretching oven now ensures an energy saving of around 200 kW per year. Aerodynamic zone separation The patented process guarantees even better and more uniform film quality across the entire working width and for ever higher production speeds. This increases the proportion of A-grade film on the winder, re - duces production waste and lowers specific energy consumption. Brückner Maschinenbau GmbH & Co. KG www.brueckner.com K 2022: Hall 03, Stand C90 Technology Innovations at K 2022 – Higher Plant Efficiency for Sustainable Film Production