John Bozzelli

John Bozzelli Founder

Injection Molding: Why & How to Do Gate-Seal Experiments

Part of optimizing any molding process is determining the second-stage injection, or pack and hold, parameters.

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best practices

Injection Molding: You Must Dry Hygroscopic Resins

The reason you dry certain plastics is to get the moisture out. But why does the moisture have to be taken out before processing?

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Injection Molding: Time Now for a Safety Review

For months many of us have been consumed with the Gulf oil pipeline blowout.

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Injection Molding: The Basics of Machine Evaluation, Part III

In the last two issues, we started defining some basic tests to ensure your injection molding machine is working properly.

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The Basics of Machine Evaluation, Part II

Last month we started defining some basic tests to ensure your injection molding machine is working properly.

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Know the Basics of Machine Evaluation, Part I

Ever wonder how many shots are made each day via injection molding?

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How to Make the Transition to Electric Presses

Electric injection machines are becoming more and more prevalent, and as they hit the shop floor, you are responsible for making them produce parts with dimensions, appearance, and performance to client specifications.

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Don't Neglect Cooling... There's Money to Be Made

For most injection molding jobs, cooling is 95% of the cycle time.

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Balanced Filling Is Critical for Holding Molding Tolerances

Processors face a multitude of challenges whenever they approach an injection molding machine.

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Good Reasons to Make a Short Shot, and How to Do It Right

Making a proper short shot is an important aspect of practicing “scientific molding.” Upon startup of almost any mold, the first step is to make a short shot.

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