Extrusion Know How
Cast vs. Integral: Which Feed Section Is Best for You?
Here are seven factors extrusion processors should weigh to help them decide between cast feed section versus an integral extrusion feed section.
Read MoreExtrusion: Understanding Weld Failures
Hard-surfacing failures without evidence of burrs indicate possible weld bond issues.
Read MoreExtrusion: How Hopper Crammers Can Help Feeding
A crammer can assist the flow of certain polymers into the extruder. But the design is not universal and very material dependent. Here’s what you need to know.
Read MoreExtrusion: The Challenges of Extruding Highly Filled Polymers
These materials require screw changes and modifications in upstream and downstream equipment and operating procedures.
Read MoreExtrusion: 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 MoreExtrusion: 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 MoreExtrusion: 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 MoreHow 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 MoreExtrusion 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 MoreSharper Dies Make for Smoother Extrusions
Dies that have a radius at the exit will result in poorer surface finish.
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