KNOW-HOW - EXTRUSION

Extrusion

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.
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Extrusion

Extrusion: 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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PET Processing - Extrusion

What You Need to Know to Get into Coextrusion

Key considerations range from determining the right extruder sizes to tooling, matching material viscosities, and lots more. Take a look.
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Extrusion

Extruder Alignment: Important, but Only Half the Equation

The other half? Aligning and supporting downstream equipment. Here are best practices.
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Film Extrusion

Understanding Viscosity in Extrusion

Both the power-law coefficient and the consistency index must be considered to calculate viscosity.
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Extrusion

Cooling the Feed Throat and Screw: How Much Water Do You Need?

It’s one of the biggest quandaries in extrusion, as there is little or nothing published to give operators some guidance. So let’s try to shed some light on this trial-and-error process.
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Extrusion

Barrier Screws: Not All Are Created Equal

Let’s take a deep dive into parallel and crossing types and see where each fit in.
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Extrusion

Why Barrel Temperatures Have a Small Effect on Melt Temperature

Extruders are not like ovens. Tweaking barrel-temperature profiles will not influence melt temperature all that much. Here’s why.
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Extrusion

Simple Scale-Up Calculations for Melting

You can avoid complicated melting equations when designing or evaluating a screw by using simpler methods that can save time and provide good results.
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Extrusion

Unraveling the Complexity of Single-Screw Scale-Up

Variables such as shear rates, melting rate, residence time and conductive heating are all influenced in the scale-up.
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