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TOOLING: Designing the Tool for the Material
To design a mold for the widest processing window and the fewest problems, start by considering the conditions imposed by the material being run.
Columns Published: 12/29/2014
The Importance of Gate Geometry
Gate size and shape—unlike gate location—don’t often get the attention they deserve. Many common assumptions about gate geometry deserve to be challenged
Columns Published: 11/24/2014
TOOLING: Flash-Free Molding: Part Two
Parting-line maintenance, mold spotting, and machine conditions can all contribute to flash.
Columns Published: 10/23/2014
TOOLING: Flash-Free Molding: Part 1
A robust process window relies a lot on tooling. So it stands to reason that making a tool change to address issues provides a more robust solution
Columns Published: 9/22/2014
TOOLING: Balancing the Heat Budget In Injection Molds
Basic formulas for how much heat you must pull out of the mold to achieve a set cycle time
Columns Published: 6/19/2014
Leverage Your Cooling Power
You can predict the amount of heat you'll need to remove from parts before ejection with reasonable accuracy if you know polymer thermal properties and certain other rules of thumb.
Columns Published: 2/25/2014
How to Start a Hot-Runner Mold That Has No Tip Insulators
Here's a method to assist with efficient dark-to-light color changes on hot-runner systems that are hot-tipped.
Columns Published: 10/24/2013