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Single Screw Extruder

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Single Screw Extruder Manufacturer

Our Single Screw Extruder is the Best Machines among all other available machines in this field for Manufacturing Powder Coating. Because of its unique working technology of Reciprocating & Rotating screw, It requires less Power, & gives highest possible dispersion of powders.

Operating principle of Reciprocating Single Screw Extruder :
The reciprocating Single Screw Extruder is a continuously operating single screw machine, but its unique operating principle and its special kneading type screw and barrel design differentiates it from traditional single screw extruder. The screw of traditional single screw extruder machine has a continuous spiral . With this machine the spiral of screw is divided (broken) in three equal gaps per revolution , resulting in the kneading flight . Three rows of kneading pins are fitted in barrel and liners at 120 deg apart. This (pins) act as a kneading and cleaning (screw flights) media. This resulting very easy cleaning of screw. The specially designed gear box with special mechanism generates reciprocating and rotary motion (oscillating) for screw. Also main barrel of machine is kept split for easy cleaning, and change over of replaceable items. The easy clamp system ensures decrease in change over time. The operating principle depends only on the movement of kneading flights relative to the kneading pins. The mechanically synchronized mechanism executes radial and axial movement to the screw. The relative motion between kneading flights and pins produces shearing gap in which the product is subjected to shearing with reorientation. And because of that :-

Homogeneous mixing of product in very short of processing screw is possible. Smooth processing conditions due to balanced shearing and electronically temperature control system. The machine barrel is having three different thermal zones, controlled by water circulation. One can start the plant by pre-heating the machine to temperature of 10 to 15 deg C above the melting point of the resin to be processed. As soon as the plasticized melt emerges from the die, the heat control is switched over to the direct cooling (chilled) water supply to the temperature zones for production i.e. removal of excess heat. As a result some of energy introduced by mechanical dispersive mixing is removed, i.e. the melt temperature is kept low. This in turn accelerates dispersive mixing and ensures smooth running of plant to produce quality product from it.

Advantages :
  • Wide range of formulation can be processed without Mechanical change. (Rapid Change of formulation)
  • Variable speed of screw can obtained
  • New Modular Design of barrel allows to increase / decrease the processing length at ease & economy
  • Minimum shut-down time for maintenance and repairs, because of split barrel
  • High operational reliability
  • Easy and rapid cleaning
  • Constant and at any time reproducible product quality
  • Low maintenance and repair cost
  • Wearing part i.e. screw elements, barrel liners and kneading pins can be replaced individually
  • Long life due to robust construction
  • Easy operating

Technical specifications

Model CEK-30 CEK-50A CEK-75
Output kg./hr. 20-40 kg./hr. 100-130 kg. / hr. 500-750 kg/hr.
Feeding Arrangement
Connected load
Speed Variable
Feed hopper capacity
0.25 hp
15-150 rpm
1.5 kg
0.5 hp
15-150 rpm
4 kg.
5 hp (side)
25-200 rpm
75 kg.
Screw Diameter
Screw Length. L/D
Screw Speed
Connected Load
30 mm
11 or 15
40-500 rpm
5 / 7.5 hp
46 mm
8 or 11
40-400 rpm
15 / 20 hp
70 mm
11 or 15
40-500 rpm
50 / 60 rpm
Heating and cooling units
Pump for hot water
4 hp
0.25 hp
6 hp
0.5 hp
12 hp
2 hp
Overall size & weight of machine (for L/D 8)
Aprox. Size (WxHxL)
Aprox. Weight in Kgs.
300 kg.
1250 kg.
1250x900x3000 mm
3500 kg.

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