Here is the outline for the topics covered in the Plastic411 Scientific Molding workshops. These are also available for in-house attendance. For more information, contact Garrett MacKenzie at :
Plastic injection processing has experienced massive change in the last 20 years. The days of molding by time and pressure have given way to molding by position, peak pressure and robust process. RJG and John Bozzelli were major pioneers in the development of decoupled and scientific molding as the procedures were developed and given structure. Plastic injection as an “art” gave way to plastics processing as a science of repeatable, standardized processes.
Watch the YouTube presentation below for information about Plastic411.com ..
The Leadership Network: Jeffery Liker
You can only imagine how exciting it was for industrial engineers and researchers when they were conducting research to understand the strategy and tools behind Toyota’s meteoric growth.
All the studies showed that Toyota was faster, with less costs and inventory, and delivering a higher quality compared to the American and European automakers. And it wasn’t by a small amount; Toyota used a small fraction of the inventory yet built cars on time every day with high quality…..
by John Beaumont
The Beaumont Effect is recognized as the source of mold filling imbalances and product variations in molds
with four or more cavities. The worst failures caused by the phenomena can be most easily (visually) recognized
in molds with 8 or more cavities. However, shear induced melt variations impact every injection molded
part, with a greater influence than most realize….
Art Schubert of RJG discusses how to capitalize on the power of process simulation and building an injection molding process prior to building a mold.
It is curious that in a world that relies increasingly on documentation, the attention to the details of polymer composition receive so little attention. Companies will fill volumes with procedures for various aspects of their manufacturing processes. However, no serious consideration is given to verifying the composition of the raw materials that are used to produce the various molded parts until there is a problem. Instead, there is a tendency simply to refer back to whatever published information is available from the material supplier….
By Garrett MacKenzie
Viscosity is a very large category that has huge effects on standardizing molding processes. It is also one of the most important factors in a molder’s arsenal of making process changes. This article will first explain viscosity, and then delve into different situations where viscosity may help or be hurting a processors goal of zero scrap and high output…..
By Garrett MacKenzie
When trying to establish process control in plastic injection, watering the tool is a key variable that is often overlooked. Water set-up and design are every bit as important as establishing and recording a repeatable process. The steps taken when watering a mold are key to a processor’s goal of consistency. If during the design and development stage, watering is put on the back burner as an “unimportant” variable, the potential for lost process control is huge.
Below are some insights into the most important facets of cooling or heating your mold, as well as what recordable data are important in the initial stages of process engineering…
By Garrett MacKenzie: October 18, 2016
In lean manufacturing, changeover times are a vital component of shop performance. Minimal down time assures that multiple changeovers have little effect on a plant’s available machine time available. After all, less down time in the production equation offers more opportunities to take on more work and increase company profits. This article outlines specific approaches towards color changes that will support the potential of completing color changeovers in 3 to 7 minutes. This may seem like an impossible task to some, but with the proper planning, methods and equipment, it is an attainable and repeatable goal…..