Injection Know How
The Cosmetic Process Window: Key to a No-Tweak, Robust Process
Establishing a process with the widest possible cosmetic window can help put your injection molding on cruise control.
Read More
Don’t Get Caught in the Flash-and-Shorts Chase
Injection molding’s most common defects can have inverse correlation, where correcting one causes the other, leading to the “chase.”
Read More
Follow These Tips to Sanitize Machine Controller Screens & Buttons
Keeping your workers safe from the coronavirus makes it extremely important to institute a sanitizing procedure on all touch surfaces of the controller, screen and operating panel. I did some research and here’s what I found.
Read More
In Search of a Universal Setup Sheet
Duplicating a process from one injection machine to another is frustrating and time-consuming. Develop a mold-specific setup sheet that works in all kinds of presses by differentiating plastic parameters from machine parameters and duplicating those plastic conditions from machine to machine, electric or hydraulic.
Read More
Revisiting Shot Size vs. Barrel Capacity
We’ve covered this topic before, but it’s important enough to warrant another look..
Read More
How Can Molders Achieve Effective Process Monitoring?
You have developed a proper process; now you need to monitor that process to ensure its stability through a run.
Read MoreChecking and Controlling Nozzle Body Temperature
Temperature control is critical from feedthroat to nozzle tip. Yet despite advances in machinery, this continues to be an issue for molders. Here’s what to do about it.
Read More
V-to-P Ramp Time and Over-Travel
Many injection machines use ramp time to control the transition from injection pressure to hold pressure and reduce over-travel. Do you know how to set yours?
Read More
Graphing Injection Pressure: What Should Pack & Hold Curves Show?
Are you sure your press is doing what you want? Visit your controller often to ensure your machines plot the pressure vs. time graph for all your processes. Here let’s focus on pack and hold.
Read More
Understanding—and Using—Decompression to Your Advantage
Decompression—aka suckback—is a very important setting on an injection molding machine. On today’s machines, molders typically get the option to set decompression before and after screw rotation/recovery. Are they using this feature to their advantage?
Read More