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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
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.
Columns Published: 12/21/2015