Twin-screw extruder powerful, wide range of applications, so you can make a wide range of products. A variety of materials for the characteristics and product requirements, we must choose different auxiliary equipment, adapt or improve the material properties, make The perfect product.
The products that can be made are broadly divided into plastic raw materials, sheet metal, pipe, cast film, etc. Today, we will granulation, for example, a brief introduction to the use of twin-screw extruder pelletizing the necessary auxiliary !
1, Water-cooled pull granulation
Pelletizing appearance : Pellets cylindrical, neat end, the production of particle size, length adjustable.
Application range : Adapted to most of the plastic granulation, mainly used for plastic filling modified, enhanced plastic, masterbatch, engineering plastics alloy, special masterbatch and other plastic pelletizing process, is one of the most widely used process, with easy operation , Easy to maintain, etc., but also the most economical choice.
Auxiliary mainly contains : Stainless steel sink, air knife (drying), pelletizer, vibrating screen, silo, dryer and so on.
2, Air-cooled conveyor belt granulation
Pelletizing appearance : Pellets cylindrical, neat end, the production of particle size, length adjustable.
Application range : For filling a relatively high amount of material is more difficult to dry after immersion, you can choose air-cooled conveyor pull pull pelletizing, to ensure material quality.
Auxiliary mainly include : Air-cooled pull the first machine, air-cooled conveyor belt, pelletizer, shaker, finished silos and so on.
3, Water ring die eagerly granulation auxiliary
Pelletizing appearance : Particles round sheet, particle diameter, thickness can be adjusted according to customer requirements
Application range : Not easy to pull the bar forming, easy to dry materials, you can choose water ring die-cutting eagerly granulation auxiliary machine, compared with the two before the granulation, because the mold can be directly pelletized, eliminating the need for the sink and conveyor Cooling time, this granulation way higher yield.
Auxiliary mainly include : Water ring eager nose, water ring cover, pelletizing, centrifugal dehydration, centrifugal pumps, shaker, finished silos and so on.
4, Air-cooled die surface eager granulation auxiliary
Pelletizing appearance : Particles just cut off when the circular sheet, due to the cyclone centrifugal force, the particles were mostly cashew shape, particle diameter, thickness can be adjusted according to customer requirements.
Application range : For not easy to pull the molding and not easy to dry the material, you can choose air-cooled die surface eager granulation auxiliary machine.Comparing the first two granulation methods, because the die can be directly pelletized, eliminating the need for water in the sink or conveyor On the cooling time, this granulation way yield higher.
Auxiliary mainly include : Air-cooled eagerly machine head, wind hood, pelletizing, high-pressure fans, three cyclones, wind pipe, shaker, finished material silos.
5, Underwater pelletizing granulation auxiliary
Pelletizing appearance : Particles are round, uniform and beautiful, the particle size can be adjusted in production.
Application range : Underwater pelletizing is suitable for almost all kinds of plastics, because of its high cost, it is generally used to make high-quality, low-hardness materials such as elastomer series, especially for high-volume pp granulation and elastomer.
Auxiliary mainly include : Underwater cutting machine head, underwater pelletizing machine, conveying water pipe, bulk material separation device, centrifugal dewatering machine, vibrating screen, finished material silo and so on.
6, Other optional auxiliary equipment
1. Pre-mixing stage
Most of the material must be fed into the twin-screw extruder before the premix is the material, whether this mixture is also determines the quality of the material. Premixed equipment with a high mixing machine, mixing machine level, mixing machine, also A negative pressure dust-free premixed feeding unit, a good solution to the workshop dust big, polluting, failing to meet the environmental standards of various defects.
2 feeding stage
After the material is mixed well, you can choose the vacuum feeder, the screw feeder will feed the material into the twin-screw extruder feed hopper, eliminating the labor-intensive labor.
3. Side feeder
For some materials, such as short glass fiber, additives, etc. can choose side feeder.
Drying stage
For the drying of the higher materials, you can choose dryer, fluidized bed and other auxiliary machines.
5. Packaging stage
Automatic, semi-automatic weighing packet system, a variety of specifications, 25kg / bag, 50kg / bag or other specifications can be set.
6. Palletizing system
Finished bag delivery, finishing, manipulator palletizing.
