Know-How
Materials: Annealing Tips for Amorphous Polymers, Part 2
In amorphous polymers, annealing is performed to draw down the internal stresses to a level not achievable within the conditions of a normal molding process. But a few parameters are important to achieving the desired results.
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The Cosmetic Process Window: Key to a No-Tweak, Robust Process
Establishing a process with the widest possible cosmetic window can help put your injection molding on cruise control.
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Tooling: How to Properly Size, Gates, Runners and Sprues, Part 2
Get the sprue, runner and gate sizes close to ideal the first time around.
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Compounding: Part 2 of 2 Demystifying Devolatilization
Here are some simple tools to help monitor and optimize your devolatilization process.
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Extrusion: Important Polymer Melting Equations for Extrusion Processors
The more you know about what happens in a screw, the more you’ll be able to work with your supplier to optimize design.
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Materials Part 1: What Annealing Can Do for Your Process
Relatively rapid cooling rates in processing introduce internal stress. If functional problems in use result, annealing may draw down the stress to levels that may not be achievable during processing.
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Don’t Get Caught in the Flash-and-Shorts Chase
Injection molding’s most common defects can have inverse correlation, where correcting one causes the other, leading to the “chase.”
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Follow These Tips to Sanitize Machine Controller Screens & Buttons
Keeping your workers safe from the coronavirus makes it extremely important to institute a sanitizing procedure on all touch surfaces of the controller, screen and operating panel. I did some research and here’s what I found.
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Part 1: How to Properly Size Gates, Runners and Sprues
Get the sprue, runner and gate sizes close to ideal the first time around—without spending a lot of time on extremely complicated formulas.
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Try This Lower-Cost Purging Method
You might be able to reduce purging times and save money by scheduling processing jobs in order of the increasing material viscosity. But to get started, you'll need shear rate/viscosity curves for your polymers.
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