Underwater Pelletizing System

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.

Table of Contents

3 Special Application

① Round shape micro pellets with the diameter ≤ 1mm.

② High output

③ Soft material with the hardness less than shore A 40

Specification of Underwater Pelletizing System

3D Assembly Drawing of Underwater Pelletizer

Diverter & Pelletizer

Diverter

Pelletizer

Dewater and Water Circulation System

3 Special Application

There are 3 special application which can be handled only by underwater pelletizing system:

① Round shape micro pellets with the diameter ≤ 1mm.

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.

② High output

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.

③ Soft material with the hardness less than shore A 40

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

Diverter & Pelletizer

Diverter

•Discharge position

•Working positino

•Hydraulic driving

Pelletizer

•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.

Dewater and Water Circulation System

•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.