Know How - Injection Molding

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Published: 4/5/2017

Bozzelli Offers At-the-Press Injection Molding Training
Scientific molding guru John Bozzelli walked a sold-out class through the basics of scientific injection molding at Molding 2017.

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: 2/27/2017

15 Things to Know About Servo-Driven Injection Machines
Drive technology for injection molding machines has been continuously evolving, and servo motors have become widely used in a variety of roles. Here’s what molders need to know about today’s servo drives in terms of cost, performance, ma...

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: 1/4/2017

Plastics Technology’s Most Popular Know How Columns in 2016
Temperature, pressure and time ultimately dictate plastics processing so it’s not surprising that Know How columns from industry experts on these topics are consistently among the most popular on our site.

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.