Solutions for POY manufacturing - Oerlikon Barmag - Oerlikon Textile

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Mixing and metering systems More than 90% of the world’s textile polyester and nylon filaments are spun in raw-white. Dying the yarns or textiles takes place later in the form of package or piece dyeing despite the fact that these processes are in many respects inefficient. The energy requirements for heating the dye bath and subsequent drying of the dye product – in the case of package dyeing, we must also consider the rewinding – are high. The high consumption of water and chemicals and the associated volume of contaminated waste water have a negative impact on the environment. Furthermore, the dyeing process is time-intensive. e-save with spin-dyeing An alternative is the spin-dyeing of textile and industrial yarns. As the masterbatch is directly added and mixed into the polymer melt, no further process steps are required in the dye plant. The spin-dyeing requires only a fraction of the energy, the water, the processing time and the space needed for conventional dyeing processes. Feed options Additives can be fed into the polymer at various points. The appropriate point must be determined, taking flexibility and costs for each process individually into consideration. feed position extruder hopper 20 POY solutions – Oerlikon Barmag upstream to 3DD mixer attached to the extruder Additives and dyes for plastics are becoming an increasingly important part of the manufacturing process. The properties of the polymers can be extensively modified as a result of additives. The option of directly introducing these additives during the manufacturing process (e.g. fibers or films) provides a high degree of flexibility and increased efficiency. The dynamic, three-dimensional mixing principle has proven to be an excellent choice when feeding additives, dyes, stabilizers and other polymers. Pumps for liquid additives or compact combination of injection extruders with gear pumps are used for feeding. The systems can be integrated in various areas of the melt system. Powered 3DD mixer One or more additive flows can be added to the main melt flow upstream to the mixer. The constant changing of the rotor/stator groove allocation creates a dynamic 3-dimensional flow that includes both a longitudinal, dispersive and distributive mixing result. Technical data Powered 3DD mixer Type Ø (mm) 7E-3DD 10E-3DD 15E-3DD 17E-3DD 20E-3DD 22E-3DD upstream to separately- driven 3DD mixer upstream to Promix AC mixer pump max. main flow kg/h form of additive granulate melt; liquid additive melt; liquid additive melt; liquid additive flexibility 0 0 + ++ costs ++ + 0 0 75 105 150 175 200 225 260 500 1000 1400 1800 2300
Feed extruder with metering pumps These components are required whenever master batch melts need to be metered into the main melt flow under high pressure. Throughput volumes from 3 kg/h can be metered. 3DD mixer as an extruder extension This mixing unit is attached to Oerlikon Barmag extruders as a screw and cylinder extension. The master batches to be added are either fed via the extruder hopper (granulate) or later into the mixing zone (melted up, liquid). The mixing zone can be separately heated or cooled. Powered 3DD mixer as a separate unit This unit is a hot melt extruder with a dynamic mixing function. Here, the pressure differential required for mixing is extensively compensated by the pressure build-up in the screw section. The speed can be selected in accordance with the mixing task. The melt temperature can be influenced by the air-cooled mixing cylinder. The mixer is designed for integration into melt distribution systems for larger throughput volumes (> 100 kg/h). Both melt and liquid mass flows can be fed in. Promix AC For customized feeding of additives or dyes (liquid) at the spinning position, this planetary gear pump offers an injection function. To this end, the dynamic mixer works synchronous to the pump speed. Pumps with 3, 4, 5, 6, 8, 10 or 12 outlets are available. Promix VS To be able to tend to the mixing and metering functions separately in terms of process, a unit with 2 separate drives for mixing and metering was developed. The unit can be integrated into spinning positions or upstream into the melt distribution system. Inject AC - metering system for liquid additives This system was developed for feeding liquid dyes and additives into plastic granulate (unpressurized) or polymer melt (pressurized). One metering pump is used for unpressurized feeding. When feeding under pressure, two metering pumps in series are used, whereby the first pump carries out the pressure build-up and the second the high-precision metering. The speeds of both pumps are set using an intelligent control system. The system can be completed with pressurized tanks with electrical filling height monitoring and valves. Valve technology enables fast dye changes using a rinse mode. POY solutions – Oerlikon Barmag 21
Page 1 and 2: Solutions for POY manufacturing
Page 3 and 4: Table of contents Plant engineering
Page 5 and 6: A selection of reference projects E
Page 7 and 8: POY solutions - Oerlikon Barmag 7
Page 9 and 10: There are numerous possibilities fo
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Page 17 and 18: The 100,000th winder delivered by O
Page 19: Pumps in a spinning plant Polymer p
Page 23 and 24: Spin packs Advanced spin pack Throu
Page 25 and 26: Cross flow quenching system - one u
Page 29 and 30: Downstream process Texturing - high

Solutions for POY manufacturing - Oerlikon Barmag - Oerlikon Textile

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