Know-How
How Can Molders Achieve Effective Process Monitoring?
You have developed a proper process; now you need to monitor that process to ensure its stability through a run.
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How to Prevent Nozzle Tip Leaks, Part 2
Your very costly mold in that very expensive press is relying on the performance of a $20 nozzle tip that no one ever checks, and has a high probability of not doing its job. Stop learning from your mistakes and start learning how not to make them.
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Try This Approach to Clean Up Your Recycled Material
CO2 can be used as a totally “green” solvent to remove many kinds of contamination in recycled plastics without the need for toxic solvents.
Read MoreChecking and Controlling Nozzle Body Temperature
Temperature control is critical from feedthroat to nozzle tip. Yet despite advances in machinery, this continues to be an issue for molders. Here’s what to do about it.
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How to Prevent Nozzle Tip Leaks, Part 1
Instead of learning from your mistakes, stop making them in the first place.
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V-to-P Ramp Time and Over-Travel
Many injection machines use ramp time to control the transition from injection pressure to hold pressure and reduce over-travel. Do you know how to set yours?
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Understanding Viscosity in Extrusion
Both the power-law coefficient and the consistency index must be considered to calculate viscosity.
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Part 1: The Basics of Tapered Interlocks
Various types of interlocks are available to molders. Here, we discuss the oldest and most common types of interlocks—those with a tapered or angular shutoff.
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Graphing Injection Pressure: What Should Pack & Hold Curves Show?
Are you sure your press is doing what you want? Visit your controller often to ensure your machines plot the pressure vs. time graph for all your processes. Here let’s focus on pack and hold.
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