Corrosive, abrasive and high temperature resistant resins may damage the twin screw barrel screws with no one knowing it. For example, certain engineering materials, thermoplastic elastomers and biopolymer materials sometimes create a corrosive environment. In addition, reinforcing materials (such as glass fibers, glass balls), certain fillers and additives are abrasive.
In order to avoid affecting production efficiency and product quality, these materials must be closely monitored to prevent damage to the equipment. In order to maintain high processing standards, it is necessary to establish preventive maintenance procedures. When necessary, the screws of the twin screw barrel should be checked and measured, and the screws of the screw barrel should be pulled out for reinstallation or replacement, because minimal wear will also affect product quality.
The best way to protect equipment from corrosive and abrasive resins is to select suitable materials to make twin screw barrel screws. In order to deal with corrosive, abrasive and high-temperature melts, it is necessary to manufacture wear-resistant barrels and screws, the cost of which is about 3 to 4 times that of standard polyolefin screws. This is because wear-resistant alloys are relatively expensive and difficult to process, but they can provide a longer service life, and the maintenance interval can be longer.
Barrel with side feeding port for controlled addition of fillers, fibers or additives during processing.
Best suited for:
Fiber reinforcement
Filler addition
Multi-component compounding
Stretching elements, also called S-type elements, improve material exchange and distributive mixing in partially melted zones.
Best suited for:
Semi-plasticized material zones
Improved dispersion
Gentle mixing processes
CKE elements combine conveying and mixing functions, providing gentle material exchange with low shear and reduced energy consumption.
Best suited for:
Heat-sensitive materials
Low-shear compounding processes
Applications requiring stable conveying with mild mixing
Six-sided geometry enabling uniform torque transfer and rapid screw element replacement.
Best suited for:
Powder coating
Frequent material changes
Fast screw configuration changes
Single flight conveying elements provide higher conveying efficiency than standard double flight elements. Their wider flight design reduces leakage flow and increases pressure-building capability.
Best suited for:
Feeding sections
Extrusion zones
Applications requiring strong conveying force
Robust rectangular spline design providing stable torque transmission with moderate load capacity.
Best suited for:
Medium torque systems
Chemical processing
Replacement applications
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