scientific molding
INJECTION MOLDING: The Trouble with Mismatched Nozzle Tips & Sprue Bushings
It happens more than most molders realize and can cause a host of molding problems. Here’s what to look for and how to fix it.
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INJECTION: First to Second Stage Transfer: Should There Be ‘Bounce-Back’?
How much screw ‘jumping’ or bounce-back can your process tolerate? The answer is no surprise: It depends
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Try Multilayer Injection for Efficient Molding of Thick-Walled Lenses
A new approach to multilayer injection molding boosts productivity in making challenging optical plastic parts, such as thick-walled LED lenses for automotive headlights, which have tolerances in the micron range.
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INJECTION MOLDING: Another Way to Deal with Regrind
You can run into a lot of problems molding parts from a blend of regrind and virgin material. Might you be better off using 100% regrind?
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High-Pressure Water: A New Concept for Screw Cleaning
Everyone in a molding plant is on the same page for screw cleaning: Avoid pulling it until there is no alternative. Here are ways for dealing with the inevitable, including an altogether new technique.
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INJECTION MOLDING: How to Tell If Your Non-Return Valve Is Leaking
Check valves are potentially troublesome devices. Here’s how to find out if yours is behaving properly.
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INJECTION MOLDING: How Does Your Machine Control Pack Velocity?
You’ll need to find out in order to develop a molding process that you can repeat from machine to machine and mold to mold.
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INJECTION MOLDING: The Importance of Nominal Wall For Lightweighting Molded Parts
Establishing a nominal wall is one of the most important decisions an engineer makes when designing parts. Understanding how design changes will impact the manufacturing process is critical to ensure the part performs as expected.
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INJECTION MOLDING: Setting Mold Protection Takes Time But Saves More
Mold protection is often neglected, but it more than pays for the time and attention required.
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INJECTION MOLDING: Troubleshooting Bridging
Bridging is an aggravating problem that can shut you down. Here's how to find it and fix it.
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