Viscosity is a fluid’s resistance to flow, or the amount of friction that exists in the material. The higher the viscosity, the more friction that exists, so the more pressure you need to inject it into a mold.
Articles
Pros and Cons of 6 Injection Molding Materials
One of the first decisions that needs to be made when designing a new injection molded part is which...
How to Develop a Robust Design for Successful Manufacturing
There are a lot of moving parts when it comes to injection molding part and mold design. Between product design, material selection, mold design, and processing, collaboration is key to ensure a successful project.
7 Ways to Lower Plastic Injection Molding Costs
Injection molding is a cost-effective way to produce parts, but there is often a significant amount of waste involved, from inefficiencies to user errors, machine damage and downtime, high scrap rates, and more. Here are 7 ways to lower your injection molding costs so you can improve your bottom line.
How to Prevent and Troubleshoot Short Shots
Short shots are among the most common and visually obvious quality issues most molders face. So what causes them? How can we prevent them? And how do we troubleshoot them when they do occur? A short shot is when a plastic injection molded part does not completely fill out—a portion of it is missing. A few issues can cause short shots, and the fix is not always straight forward.
8 Good Injection Molding Principles You Should Follow
By John Lobozzo, Technical Sales Engineer at RJG Technologies Whether you've been directly...
What Is the Difference Between Weld, Knit, and Meld Lines and Why Does It Matter?
By Jeremy Williams, Consultant/Trainer In the plastic injection molding industry, we work with...
How to Set Up the ID-7 Module
Setting up the ID-7 module correctly is vital to ensure...
How to Size the Nozzle Tip
Improper nozzle tip sizing can lead to leaks and...
Clamp Force: Why It’s Vital to Your Injection Molding Process and How to Calculate It
By Jim Clifford, Consultant / Trainer, RJG Clamp force is one of the most overlooked portions of...
Understanding the Terminology of Different Molding Machines
Unfortunately, the injection molding world...
What Actually Causes Flash in Injection Molded Parts?
Flash is one of the most common defects in the injection...
Basics of Mold Protect
Learn the basics of how to set up mold protect on an...
How to Achieve a Fill-Only Part
The fill-only part is a critical principle of plastic injection molding process development and...
6 Benefits of Plastic
We so often hear of the negatives that are associated with plastic that it’s easy to forget all of the...
5 Questions to Ask Before Instrumenting a Mold
Putting a sensor anywhere in a tool can give you some form of data, but it may not be value-added. The...
Why Cushion Is Critical for Your Injection Molding Process
By Jim Clifford, Consultant / Trainer at RJG Some may ask: Why bother with cushion if you monitor Peak...
Introducing the Future of Injection Molding Tool Launches: A Success Story
Tool launches are stressful. They’re time-consuming, labor-intensive, and extremely costly. Mix into it...
Why You Should Stop Controlling Your Injection Molding Process Based on Machine-Only Settings
You just established a center process, now what? You probably record the machine setpoints on a setup...
The Effect of Pressure and Temperature on Part Quality and Dimensions
Injection molding is a complex system of machinery, fluid dynamics, and thermal conductivity. And...