Know How - Injection Molding

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Published: 8/17/2015

INJECTION MOLDING: 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.

Published: 4/27/2015

INJECTION MOLDING: Scientific Molding Gone Wrong
Sometimes molders get trained in Scientific Molding only to revert to their old way of doing things as soon problems pop up.

Published: 3/31/2015

Injection Molding: How to Get Rid of Bubbles
First find out if they are the result of trapped gas or a vacuum void. Then follow these steps to get rid of them.

Published: 2/22/2015

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.

Published: 1/27/2015

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

Published: 12/29/2014

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?

Published: 11/24/2014

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.