Injection Know How
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.
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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.
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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
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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.
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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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