PSF Production Line
PSF Production Line
Our Complete Set of Polyester Staple fiber (PSF) line is suitable for multi-variety differential fibers:
<1> High-tenacity cotton type fiber
<2> Mediate - length polyester staple fiber
<3> Fine denier fiber
<4> Color fiber
<5> High-tenacity sewing thread
<6> Hollow fiber
1. PSF Spinning Description & Flow-chart
The polymer melt from the polymerization system enters this system from the exit of the polymer triple valve, which will be transported by the melt manifold (static mixer being fixed inside) to the spinning machine. The filament from the spinning machine will be cooled and solidified into un-drawn fiber by the inside-to-outside circular blow assembly, after being finished and guided, finally it is fed into fiber can.
Polymer→ triple valve → buster pump → condenser→melt manifold→filter →melt manifold→ spinning→ quenching→ finishing→ capstan→ feeding→ fiber collecting
2. PSF Draw Line Description & Flow-chart
Under the uniform tension, undrawn tow passes through creel and is parallel sent to pre-feed module. After adjusting the tension, the tow is divided into 3 pieces of band, and then goes around 7 roller of prefeed module to keep it invariable tension before going into prefeed bath. Tow gets the necessary oil and a certain temperature from prefeed bath, where the oil concentration is 0.25%. Then the tow goes into Draw module I, draw bath, Draw module II, draw streamer, annealer and Tow cooling spray device.
Main draw process of Tow carries through draw bath between draw module and draw module II, where the tow is heated. The draw multiple is 3～4.
Passing through draw steamer, the tow goes into Annealer , and before the first group setting roller, tow finishes the second draw section Draw process speed is 260～280m/min.Total draw multiple is 3～4.5
The roller of draw module 1 and draw module II are of non-heated type. Tow is heated in Draw bath. The temperature of outlet is about 70℃.
The fiber needs to be set under high temperature to produce with high strength and low extension cotton type. Therefore, the setting type is of high-pressure steam heating roller. Used steam is 2.4MPa. Tow outlet temperature is 190℃. Tow goes into Tow cooling spray device for cooling through oil spraying. Draw module III also uses non-heated rollers, and tow temperature from outlet is 70℃.
The tows after cooling are sent into tow stacker, the 3 pieces tows are stacking into 1 piece. The roller, tilt angle of which can be changed, achieves the stacking process. The width of the tows and the quality of stacking is especially important for crimping.
The crimping results come from adjusting pressure of pressing roller and stuff box.
The tow after crimping goes onto the chainplate of dryer by down-sliding laying system. Before going into the dryer，Spray the oil on the tow once more。 the tow has been dried and set under loose condition.
The dried tow is dragged onto the platform +15.000m above through guide part and knot catcher. Under the control of Tow tension stand, the tow is evenly fed to Cutter, and cut into the required length. The cut fiber directly drops down into Baler, where makes into bale with specified weight. Through packing, the bale is sent to Weigher for check the weight by transportation dolly, and then labeled. After check out, send the bale to Warehouse.