Know-How
What You Need to Know About Blade Ejectors: Part 3
Follow these guidelines to prevent premature wear, flash and galling. The focus here is on corner radii.
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Understanding the Influence of Screw Geometry on Melting Rate
They are not as closely connected as most processors think. Here’s why.
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What You Need to Know About Blade Ejectors: Part 2
Follow these guidelines to prevent premature wear, flash and galling.
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Understanding Roll Deflection in Sheet Processing
Because of roll deflection, sheet stacks made for PS don’t work nearly as well with PP. One solution is to try a top roll that bends in the opposite direction.
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Apply the Power of a Troubleshooting Checklist to Your Process
Pocket guides provide processors an injection molding “crib sheet,” but in a process with thousands of interactions, applying if-this/then-that logic can’t always get you to a problem’s root cause.
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Tracing the History of Polymeric Materials: Nylon
The story of nylon, the first true engineering thermoplastic.
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How to Select the Right Cooling Stack for Sheet
First, remember there is no universal cooling-roll stack. And be sure to take into account the specific heat of the polymer you are processing.
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What You Need to Know About Blade Ejectors: Part 1
Follow these guidelines to prevent premature wear, flash and galling.
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The Difference Between Knit and Meld Lines--and Why It Matters
In many part designs, flow fronts will inevitably be split, but how and where they come back together is hugely important to the molded part’s finished strength.
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Tracing the History of Polymeric Materials: Cellophane
How—and when—cellulose-based chemistry led to the discovery of cellophane.
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