Underwater pelletizing system is good for most of polymers. Especially for TPU and TPV or similar elastomer, its advantage plays well.
GSmach can provide complete compounds production lines with underwater pelletizing system, such as TPU/TPV production line.
We have launched more than 100 compounding lines with underwater pelletizing systems.
Compared to other pelletizers, underwater pelletizers are more compact, which is noticeable when production volumes are high. The size of the final granules can also be better controlled. The system consists of a melt pump, filter, diverter valve, die head, underwater pelletizer, water circulation system and dewatering system.
There are 3 special application which can be handled only by underwater pelletizing system:
Due to the small particle size, the micro granules spread more evenly and are more finely distributed, as with conventional polymeric raw materials. In contrast, conventional masterbatches with "normal" sized granules must be used at higher doses to achieve the desired effect.
Therefore, with micropellets, less colourant is required, which results in significant cost savings, as masterbatches are very expensive compared to crude polymers. Micropellet shaped masterbatches are easier to handle, easier to formulate and dust free.
Round micropellets can only be manufactured by underwater granulation systems.
It is difficult to handle the output more than 1000kg/h by the other type of pelletizing system. Under water pelletizing system can handle the output up to 50ton/h.
Many type of soft material, such as TPE/TPV/EVA/Hot Melt Adhesives, can be made only by underwater pelletizing system
3D Assembly Drawing of Underwater Pelletizer
• Discharge position
• Working positino
• Hydraulic driving
• Die plate heating: eletrcial heater or Oil
• Two type of knife: bevel and vertical. It is designed for different material.
• Two type of pressure setting for knife: Manually and Hydraulic.
• Online polish for knife
• One button start/stop
• Knife length indication
With the hydraulic station, the tool pressure can be set on the touch screen and the system will automatically sharpen the tool according to the set time and pressure.
• The water tank with heater and water level and temperature control.
• The filter with rotating belt and servo motor which will automatically discharge the powder
from the dewater system.
• The dewater system with extra fan for removing the moisture.
• The cooling pipe with water flow control and indicate on the touching screen.
• The heat exchanger is easily for cleaning.
• One pneumatic valve to control the outside cooling water flow, which will be interlock with the
water temperature in the tank.
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