Water Cooling Strand Pelletizing Line for Fiber Reinforcement
Fibers are added to the polymer to increase the rigidity (strength and modulus) of the product. The common polymer resin is PA, PP, and the common fiber is glass fiber, carbon fiber. Common addition ration is 10~50%. The glass fiber is evenly distributed in the resin, and the longer the retention length is, the better the strengthening effect is.
Plastic particles, auxiliaries and powder are fed by loss-in-weight feeder respectively, The precision of proportioning is high, and the phenomenon of material layering and bridging is avoided. For the simple formulation, the materials after evenly premixing can be fed into carbon fiber extruder or glass fiber extruder by volumetic feeder.
The glass fiber or carbon fiber is usually added in the middle and rear section of the processing barrels to avoid too short effective length because of excessive shear. The short cut glass fiber or carbon fiber is added by the side feeder, and the long glass fiber(carbon fiber) is added directly to the opening of the barrels through the screw rotation and traction automatically, and the long glass fiber is added continuously.
The common pelletizing way is water strand pelletizing.
1. high speed mixer 2. solids conveyor 3. main feeder 4. side feeder 5. glass fiber 6. twin screw extruder 7. water trough 8. air knife 9. pelletizer 10. silo
Fiber reinforcement: glass fiber, carbon fiber reinforced PP, PA, PBT, ABS, AS, PC, POM, PPS, PET, PPO, PSF, LCP etc.