Extrusion Know How
Troubleshooting Screw and Barrel Wear in Extrusion
Extruder screws and barrels will wear over time. If you are seeing a reduction in specific rate and higher discharge temperatures, wear is the likely culprit.
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Looking to Run PCR on a Single Screw? Here’s What to Keep in Mind
Just drop it in and mix it up? Sorry, there’s a lot more to it than that. Here is some of what you need to consider.
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How Screw Design Can Boost Output of Single-Screw Extruders
Optimizing screw design for a lower discharge temperature has been shown to significantly increase output rate.
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Troubleshooting Vent Flow Problems in Single-Screw Extruders
Vent flow can be a costly problem and a housekeeping nuisance. Here is some advice on how to eliminate it.
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The Right Way to Design Vents in Single-Screw Extruders
Designing vents for single-screw extruders requires understanding of polymer flow in the screw channels. Some designs are more effective than others. Here are some guidelines.
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Extruder Alignment: Important, but Only Half the Equation
The other half? Aligning and supporting downstream equipment. Here are best practices.
Read MoreWhy Compression Ratio is Important
Compression ratios have been pretty much standardized over the years, based on what has typically worked before. But there are quite a few variables that must be considered in order to get the optimum performance from your screw.
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How Much L/D Do You Really Need?
Just like selecting the extruder size and drive combination, the L/D should be carefully evaluated.
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Take Proper Care in Feeding Your Extruder
Everything that happens in an extruder starts at the feed throat, so proper attention to that zone’s temperature pays off in quality and productivity.
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Smaller Screws Impose Bigger Challenges
Very small extruder screws work just about like their larger cousins, but some critical differences make them harder to design and machine.
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