Know How - Injection Molding

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Published: 4/25/2017

How to Duplicate a Process From Press to Press
To adopt the right approach you must distinguish between machine and plastic parameters.

Published: 3/24/2017

How to Pick, Remove, and Replace a Nozzle Tip
This small component can cause big problems. Here’s my procedure for picking and replacing yours.

Published: 2/25/2017

A Simpler Way to Calculate Shot Size vs. Barrel Capacity
Let’s take another look at this seemingly dull but oh-so-crucial topic.

Published: 1/26/2017

Analyze Moisture Before Processing
If you want a stable process and parts that function properly, you must monitor the water content of the resin before molding.

Published: 12/27/2016

Understanding Intensification Ratio
A first step in taking the “art” out of molding.

Published: 11/23/2016

Unraveling the Mysteries of Melt Temperature
Infrared technology can provide consistent and accurate readings of melt temperature. Here’s how to use it.

Published: 10/18/2016

Two-Shot Molding and Tool Design
There are a few variations of the two-shot molding process, and each has implications for tool design.

Published: 10/18/2016

Faster Is Not Always Better—Optimize Your Molding Cycle
It is possible for machines to run too fast, so find the sweet spot where maximum output overlaps with good parts.

Published: 9/27/2016

Water Droplets in the Feed Throat
And other reasons you must dry hygroscopic resins.

Published: 8/24/2016

INJECTION MOLDING: How to Mold Living Hinges With No Flexing Required
Here are the five critical, intertwined components that must be perfected for a living hinge that doesn’t need to be flexed upon ejection.