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John Bozzelli Founder
INJECTION MOLDING: Properly Placing & Cooling Insulator Plates
Thermal-energy management from the mold to the platens is critical for making consistent parts.
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INJECTION MOLDING: Do You Need to Profile Injection Velocity?
Look at the parts. If the answer is yes, the on-machine viscosity curve can help.
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INJECTION MOLDING: Improving Barrel-Temperature Measurement and Control
Proper thermocouple placement and contact area are crucial, as is wire maintenance. But remember that barrel temperature and melt temperature are not the same
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INJECTION MOLDING: Get Control Over Barrel Zone Temperature Override
Poor temperature control results in an erratic melt stream and process. Here are some tips on how to get things under control.
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INJECTION MOLDING: Develop Guidelines—Not Strict Procedures— For a Robust Molding Process
‘Fool-proof’ dos and don’ts will prove foolhardy in a process with so many variables. You aren’t slinging burgers.
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INJECTION MOLDING: Gate-Seal Testing Done Right
Follow these 16 steps to perform the experiment and learn what is best for your part and process.
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INJECTION MOLDING: Why Pellet Size and Shape Are Important
Uniformity is needed to help ensure melt quality.
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Understanding Machine vs. Plastic Variables
Why setup sheets, DOEs, validations, etc. may not yield the results they should.
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INJECTION MOLDING: How to Specify an Injection Molding Machine
There are 51 things to consider when spec’ing a controller.
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INJECTION MOLDING: How to Specify an Injection Molding Machine
In part two of a three-part series, the focus is on the injection unit.
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INJECTION MOLDING: How to Specify an Injection Molding Machine
With the market percolating, more molders are looking at new presses. This series will discuss what you should consider before writing a check, beginning with the clamping unit.
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How to Get Rid of Bubbles in Injection Molding
First find out if they are the result of trapped gas or a vacuum void. Then follow these steps to get rid of them.
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