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Granulator Classification
Jul 20, 2018

The underwater granulator is similar to the air granulator and water jet granulator. The equipment mainly covers: plastic granulator, single and double screw plastic extruder, plastic film blowing machine, bag making machine, printing machine, coating Machine, tape machine, tape slitting machine, slitting machine, strapping machine. The modified formula is mainly made of alloy materials, especially PET, PC, ABS, (PP, PA), which are currently growing in the application areas; plastic formulas have developed plastic wrap, degradation film, PET thickening and toughening formula . The difference is that it has a smooth flow of water through the die face, in direct contact with the die face. The dicing chamber is sized to allow the dicing blade to freely rotate across the die face without limiting the water flow temperature. The molten polymer is extruded from a die, and the rotary cutter cuts the pellets, and the pellets are taken out of the pelletizing chamber by the tempered water and enter the centrifugal dryer. In the dryer, the water is drained back to the storage tank, cooled and recycled; the pellets are removed by a centrifugal dryer.


The strip production line is not costly, easy to operate, and easy to clean. This has advantages for color compounding because the replacement of two different batches of color must be thoroughly cleaned. However, the disadvantage of the strip forming method is that the cooling section takes up space and its length is determined by the temperature requirements of the polymer.


Most polymers must be compounded before they are made into a final product and then granulated to become a marketable ingredient. The power required by the granulator is proportional to the amount of extrusion and is exponential with the size of the screen. There are many different granulator designs, but all granulators can be divided into two broad categories: cold pelletizing systems and die face hot pelletizing systems. The main difference between the two is the arrangement of the pelletizing process time. The cold pelletizing system cuts the pellets from the solidified polymer at the end of the processing; in the die face hot pelletizing system, the pellets are pelletized when the molten state polymer emerges from the die, and the pellets are processed downstream. cool down. Both pelletizing systems have their own advantages and disadvantages.