What are the ways to protect the screw and barrel? Let's take a look together!
Corrosive, abrasive and high-temperature resistant resins may unknowingly damage the extruder screw and barrel. For example, some engineering materials, thermoplastic elastomers and biopolymer materials sometimes create a corrosive environment. In addition, reinforcing materials (such as glass fibers, glass balls, etc.), certain fillers and additives, are all abrasive.
In order to avoid affecting production efficiency and product quality, these materials must be closely monitored by processors to prevent damage to the equipment. In order to maintain high processing standards, it is necessary to establish preventive maintenance plans.
When necessary, the screw and barrel should be checked and measured, and the screws should be pulled out for reinstallation or replacement, because minimal wear will also affect product quality.
To protect equipment from corrosive and abrasive resins, it is better to choose suitable materials to make the screw and barrel. As one of the leading screw barrel manufacturers in China, we have high quality screw and barrel for sale.
In order to cope with corrosive, abrasive and high-temperature resistant melts, it is necessary to manufacture wear-resistant screw and barrel, the cost of which is about 3 to 4 times higher than that of standard polyolefin screws. This is because wear-resistant alloys are more expensive and difficult to process, but they can provide a longer service life, and the maintenance interval can be longer.
TME elements use intermeshing toothed discs to split and recombine melt flow, achieving efficient distributive mixing without conveying.
Best suited for:
Melt mixing zones
Fiber-reinforced materials
High homogeneity requirements
SME elements introduce shallow reverse grooves on conveying flights, generating controlled melt backflow and improving distributive mixing.
Best suited for:
Melt stage mixing
General distributive mixing
Applications requiring good self-cleaning
SSK conveying elements combine the strong conveying ability of single flight elements with increased free volume.
Best suited for:
Difficult-to-feed materials
Low-density powders and fillers
Integrated barrel combining feeding and venting functions to optimize space and enhance process flexibility.
Best suited for:
Compact configurations
Combined feeding and venting
Flexible process layouts
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
Simple keyed design for basic torque transmission in low-load extrusion systems.
Best suited for:
Low torque applications
Legacy extruders
PVC processing
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