Extrusion Know How
Extrusion: The Role of Polymer Density in Screw Design
Density affects the mass flow rate, and energy transfer is based on mass, not volume. As a result, polymer density enters into practically every calculation in a screw design.
Read More
Extrusion: The Facts About Barrel-Temperature Override
Cooling the barrel more may extract heat from the barrel, but not necessarily from the process. Here’s why.
Read More
Extrusion: The Importance of Proper Barrel Supports
Supports that allow the barrel to expand and contract easily will prevent alignment issues. Examine them periodically for proper operation, particularly if you’re experiencing excessive wear.
Read More
How to Collect and Interpret Extrusion Process Data; Part 3
In this final installment, learn how process data can be used to identify and fix extrusion issues.
Read More
Extrusion Cooling: It’s All About Turbulence
Regardless of what you are extruding, in order to maximize cooling you need to generate turbulence at the heat-exchange surface.
Read More
Sharper Dies Make for Smoother Extrusions
Dies that have a radius at the exit will result in poorer surface finish.
Read More
Sizing the Barrier Gap
Here’s a less complex way to properly size the barrier gap for barrier screws.
Read More
Optimize Feeding to Get More Money in Twin-Screw Compounding
Follow these practical examples to improve the feeding efficiency and productivity of your process.
Read More
How ‘Hydro Wedges’ Reduce Screw Wear
Using them only in the melting section provides for greater design freedom and negates the impact these devices can have on output and melt temperature.
Read More
Extruding with Fillers
You can use the reference point from processing unfilled polymer to determine whether you can run filled resin on your current system.
Read More
