During mold filling, as molten plastic comes in contact with the perimeter of any cooled channel (sprue, runner, gate and part forming cavity) a frozen layer will develop. An initial frozen skin will develop nearly instantly and its thickness will dynamically change throughout the mold filling and packing portions of the molding cycle. During mold filling, the thickness is significantly influenced by shear rate and will influence the filling pressure.
“Of all the training seminars that I have attended over the past 10 years, this one ranks at the top! The explanations of clamp tonnage, cooling strategies, viscosity, and key mold design components are just a few of the takeaways that will be very useful in my job function.”
Russ Wolff, Business Development Manager
“I was amazed at the amount of expertise and knowledge presented in just two days. Many myths were debunked, numerous scientific explanations for the way we should be thinking about plastic flow were given, and various real-world examples were used to show how plastic flows.”
Don Makowski, Design Engineer