Extrusion Know How
Latest Extrusion Know How Articles
VIEW ALLHow Polymer Melts in Single-Screw Extruders
Understanding how polymer melts in a single-screw extruder could help you optimize your screw design to eliminate defect-causing solid polymer fragments.
Read MoreIs a Gear Pump Right for Your Single-Screw Operation
As with everything else, there are pros and cons, but more of the former. They provide processors higher rates while decreasing the temperature of the extrudate while enabling downgauging.
Read MoreStop Shopping for a 'Jack of All Trades' Extruder
Some processors try to find “fits all” extruders to cover all processing possibilities. But you’d have to grossly overpower it to achieve this, and that’s expensive up front and will result in inefficiencies over time.
Read MoreThe Importance of Barrel Heat and Melt Temperature
Barrel temperature may impact melting in the case of very small extruders running very slowly. Otherwise, melting is mainly the result of shear heating of the polymer.
Read MoreOptimizing Barrel Temperatures for Single-Screw Extruders
If barrel temperatures are set correctly and screw design is optimized, the extruder will be operating at peak performance, providing maximum profitability. If not, bad things can happen impacting quality and profitability.
Read MoreSingle vs. Twin-Screw Extruders: Why Mixing is Different
There have been many attempts to provide twin-screw-like mixing in singles, but except at very limited outputs none have been adequate. The odds of future success are long due to the inherent differences in the equipment types.
Read MoreLatest Extrusion Know How News And Updates
EXTRUSION: Melting 101
Learn the basics on how polymer melts in a single screw. Barrel temperature plays less of a role than you might think.
Read MoreFeatured Posts
Roll Cooling: Understand the Three Heat-Transfer Processes
Designing cooling rolls is complex, tedious and requires a lot of inputs. Getting it wrong may have a dramatic impact on productivity.
Read MoreTroubleshooting 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.
Read MoreLooking 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.
Read MoreHow 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.
Read MoreTroubleshooting 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.
Read MoreThe 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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