processing tips
The Importance of Barrel Heat and Melt Temperature
Barrel temperature may impact melting in the case of very small extruders running very slowly. Otherwise, melting is mainly the result of shear heating of the polymer.
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Ultrasonic Welding: Tips, Techniques, and Troubleshooting
In this collection of content, we provide expert advice on welding from some of the leading authorities in the field, with tips on such matters as controls, as well as insights on how to solve common problems in welding.
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Five Quick Steps Toward Better Blending
Rising costs of resins and additives, along with higher demands for quality and use of regrind, place a premium on proficient blending. Here are some steps to get you there.
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Got Streaks or Black Specs? Here’s How to Find and Fix Them
Determining the source of streaking or contamination in your molded parts is a critical step in perfecting your purging procedures ultimately saving you time and money.
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Know Your Options in Injection Machine Nozzles
Improvements in nozzle design in recent years overcome some of the limitations of previous filter, mixing, and shut-off nozzles.
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Bozzelli’s Guide To Specifying a Dryer
Here's a list of 17 things to do when looking for new drying equipment.
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The Effects of Time on Polymers
Last month we briefly discussed the influence of temperature on the mechanical properties of polymers and reviewed some of the structural considerations that govern these effects.
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The Effects of Stress on Polymers
Previously we have discussed the effects of temperature and time on the long-term behavior of polymers. Now let's take a look at stress.
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A Guide to Ultrasonic Welding Controls
Ultrasonic welding today is a sophisticated process that offers numerous features for precise control. Choosing from among all these options can be daunting; but this guide will help you make sense of your control features so you can approach your next welding project with the confidence of getting good results.
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How to Optimize Pack & Hold Times for Hot-Runner & Valve-Gated Molds
Applying a scientific method to what is typically a trial-and-error process. Part 2 of 2.
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