Know How - Injection Molding

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Published: 2/22/2016

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.

Published: 1/20/2016

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

Published: 12/21/2015

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.

Published: 11/23/2015

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.

Published: 10/26/2015

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.

Published: 9/25/2015

INJECTION MOLDING: Why Pellet Size and Shape Are Important
Uniformity is needed to help ensure melt quality.

Published: 8/17/2015

Understanding Machine vs. Plastic Variables
Why setup sheets, DOEs, validations, etc. may not yield the results they should.

Published: 7/16/2015

INJECTION MOLDING: How to Specify an Injection Molding Machine
There are 51 things to consider when spec’ing a controller.

Published: 7/1/2015

INJECTION MOLDING: How to Specify an Injection Molding Machine
In part two of a three-part series, the focus is on the injection unit.

Published: 5/25/2015

INJECTION MOLDING: How to Specify an Injection Molding Machine
With the market percolating, more molders are looking at new presses. This series will discuss what you should consider before writing a check, beginning with the clamping unit.