Solutions for POY manufacturing - Oerlikon Barmag - Oerlikon Textile

Polyester POY
The optimized processes for manufacturing polyester
POY on Oerlikon Barmag systems guarantee
the best possible combination of number of ends
and package weight. DTY and other downstream
processes can be run at extremely high take-up
speeds as a result of the excellent yarn evenness
achieved. The best CV% values as well as AA-quality
yarns are standard.
The production process with 20 ends can be carried
out using the hydraulic-split procedure. However, the
requirements of a high yarn-to-yarn titer evenness require
the double-in-one (DIO) technology. With this technology,
two separate polymer melt flows are led through a package
completely separately using their own spinning pump. This
enables titer evenness identical to single packages while
requiring 30% less space.
The optimized production process is designed for low
conversion costs as a result of low investment costs and –
in comparison to standard spinning systems – low space
requirements within the spinning unit. The yarn is wound
onto individual WINGS machines, hence allowing the system
to produce a high number of ends at high speed, while still
permitting a package volume of 16.8 dm³. This also ensures
full bobbin rates as the yarn path to each winder is completely
separated. The process was optimized to the lowest
angle of deflection, which enables low POY CV% values. For
this reason, the material can handle the highest speeds in
texturing and in further downstream processes.
Process 10 ends 20 ends
Titer final 30 - 400 den 30 - 200 den
Single filament titer 0.3 - 6.3 dpf 0.5 - 5.0 dpf
Filament count 12 - 384 18 - 144
Ends per position 10 2 x 10
Mechanical speed 2500 - 4000 m/min 2500 - 4000 m/min
Chuck length 1500 mm 2 x 1500 mm
Volume 16.8 dm³ 16.8 dm³
Extruder or direct spinning
Spinning beam series SP8x (z) SP8x (z)
Winder type series WINGS 2 x WINGS
Quench type series EvoQuench (z), cross-flow EvoQuench (z), cross-flow
12 POY solutions – Oerlikon Barmag
Microfibers
There are different processes available for manufacturing
polyester microfibers: cross-flow half-pipe quenching permits
titers of between 75 and 150 den, whereby the titer of the
individual filament lies between 0.5 and 1.5 dpf.
Alternatively, the process using EvoQuench quenching
allows for finer titers of between 30 and 400 den. This
process enables titers for the individual filament to be
between 0.34 and 3 dpf. Up to 288 ends can be manufactured
using this technology.
EvoQuench quenching reduces the quench air consumption
by around 60% compared to cross-flow quenching, hence
achieving considerable savings in the conversion costs.