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INJECTION MOLDING: Purging: A to Z
Use these steps as a guide to minimize the time and money it takes to switch materials and color on your presses.
Columns Published: 7/19/2016
INJECTION MOLDING: How Different Machine Types Handle Fill and Pack/Hold Times
The procedures are different between series and parallel machines. What type do you have? How can you tell? Here’s what you need to know.
Columns Published: 6/22/2016
INJECTION MOLDING: Processing Nylon…and Other Problems
As moisture content in this and other hygroscopic resins varies, so will your viscosity and process. Here’s how to deal with these issues
Columns Published: 5/26/2016
INJECTION MOLDING: Gate Freeze Study: Danger in a Name?
The test actually determines the hold time needed to mold repeatable parts, and it should be done regardless of whether the gate freezes or not.
Columns Published: 4/25/2016
INJECTION MOLDING: Properly Placing & Cooling Insulator Plates
Thermal-energy management from the mold to the platens is critical for making consistent parts.
Columns Published: 3/24/2016
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.
Columns Published: 2/22/2016
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
Columns Published: 1/20/2016