best practices
Injection Molding: Is There a ‘Most-Important’ Process Parameter?
A case can be made for multiple variables—fill balance, fill time, injection pressure, cavity pressure—as most important. But there is something else altogether that is essential to successful injection molding.
Read More
A Processor’s Most Important Job, Part 8: Molded-In Stress
How processing adjustments can control molded-in stress.
Read More
Improving Molding Process Capability: The Role of the Five Essential Pillars, Part 2
Each contributes to molded-part quality, and each must be optimized before production begins.
Read More
Tooling: Why Ejector Pins Break...and How to Prevent It, Part 1
In part one of this four-part series, we focus on the molding machine and the ejection system as culprits.
Read More
Injection Molding: Fill Based on Volume, Not Weight
Most parts should be 90-99% full after first-stage—by volume not weight. Here’s why that’s important and how to make a first-stage-only part.
Read More
A Processor's Most Important Job, Part 7: Reviewing Crystallinity
There are several process-related issues that influence crystallinity besides cooling rate. Let’s examine a few.
Read More
An Engineering Approach to Mold-Cooling Circuit Design
The Energy Density vs. ΔT/in. relationship is an important step forward in pursuit of a science-based approach to cooling-circuit design. Here’s why.
Read More
Extrusion: A Simple Way to Evaluate Your Screw Performance, Part 2
A hand-held calculator and some basic equations can help determine whether your screw is up to snuff.
Read More
Industry 4.0 Gives DMT a Sharper Edge
Leading maker of blade sharpeners boosts productivity in captive molding with cutting-edge connectivity.
Read More
Injection Molding: Safety First—Know the Compatibility of Different Resins
Certain materials don’t play well together when mixed. So it’s best not to. Here are some guidelines.
Read More