Injection Molding

Exploring the: Injection Molding Zone

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Published: 7/25/2017

Time for Another Look at Non-Return Valves
First and foremost, they must seal properly, and check valves with stepped angles or radiused seats perform the best.

Published: 6/27/2017

Are You Using More Than 65% Of Your Barrel Capacity?
If you are, you are inviting Murphy—as in trouble—to the party.

Published: 5/31/2017

Clamp Tonnage: More Is Better...Right?
Determining the correct tonnage provides a foundation that must be rock-solid to avoid flash and damage. But applying excessive force can create problems with the part, mold, and machine.

Published: 5/30/2017

Cycle Time: Science vs. Rules of Thumb, Part 1
What temperature must the polymer reach so the part can be ejected from the mold? Here, more than for any other variable, ‘rules of thumb’ unfortunately prevail.

Published: 4/25/2017

Locating Rings, Platen Damage, and the Center of Gravity: Part 3
Selecting the right locating ring and putting it to good use takes careful consideration.

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: 1/26/2017

Injection Molding Done Right
Looking to improve your molding operation? Who isn’t? We’ve got you covered: Attend the Molding 2017 Conference in April.