Skip links

Single Screw Barrel for Extruder

A screw is one of the most important components of an extruder. In essence, a screw is a cylindrical rod whose diameter changes over time and is surrounded by helical flights. It is responsible for conveying, heating, and mixing the material.
 
Most extruders have a constant outside diameter of the screw, from flight tip to flight tip. Radial clearance to screw diameter ranges from 0.0005 to 0.0020 in general. We manufacture single screws and barrels with screw diameters ranging from 20 mm to 150 mm.

Application

Pipe Plant
Sheet Plant
Film Plant

*Cable Manufacturer (Any Type of Materials)
*Compounding Plant
*Blow Moulding Machinery and Any type of Plastic Pallet Manufacturing

Barrier Screw Barrel

Barrier screw designs are the most widely used feedscrew designs in the plastics industry. In both trials and real-world applications, the barrier screw has proven to outperform competing designs. Plastivo Extrusions barrier technology increases the feedscrew’s maximum melt capacity while improving extrudate quality and stability. Customers in both extrusion and injection molding rely on the barrier screw to maintain a competitive advantage.
 

 

The undercut barrier allows melted polymer to move from the solids channel to the melt channel via the barrier screws. This has a number of performance benefits.

Application

Grooved Feed Barrel

The “Egan” style mixer is a mixing device with high dispersive and distributive properties. There is far more dispersive and distributive mixing than there was with the Maddock mixing section because all of the flights are undercut. Extruders with single screws use a variety of mixing devices. These devices differ in whether they are primarily dispersive or shear devices, which add to melting capacity, or redistribution devices, which distribute the minor component layers throughout the main component by dividing the melt numerous times. The two features are necessarily present in all mixers. Maddoc barrier screws break down particles by forcing them to flow over barrier flights. Mixing devices affect screw performance in general. The material should be completely melted once it passes through the barrier section on these screws if they are designed properly. When a dispersive or shear mixer is added after a barrier section, the melt temperature is unnecessarily increased, the output is reduced due to the extra pressure drop, and the cooling process consumes more energy. To homogenize temperatures, colors, or additive distribution while providing minimal additional melt temperature increase and output reduction, a distributive mixer is the best choice.

Application

Maddoc Barrier Screw

The “Egan” style mixer is a mixing device with high dispersive and distributive properties. There is far more dispersive and distributive mixing than there was with the Maddock mixing section because all of the flights are undercut. Extruders with single screws use a variety of mixing devices. These devices differ in whether they are primarily dispersive or shear devices, which add to melting capacity, or redistribution devices, which distribute the minor component layers throughout the main component by dividing the melt numerous times. The two features are necessarily present in all mixers.


Maddoc barrier screws break down particles by forcing them to flow over barrier flights. Mixing devices affect screw performance in general. The material should be completely melted once it passes through the barrier section on these screws if they are designed properly. When a dispersive or shear mixer is added after a barrier section, the melt temperature is unnecessarily increased, the output is reduced due to the extra pressure drop, and the cooling process consumes more energy. To homogenize temperatures, colors, or additive distribution while providing minimal additional melt temperature increase and output reduction, a distributive mixer is the best choice.

Application