Know-How
Moving Beyond the Relative Viscosity Curve — Determining Optimum Plastic Flow Rates: Part 3
Molders can use data to determine optimum flow rates by combining cavity imbalance studies with an understanding of machine velocity capabilities.
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Understanding Screw Temperature in Single-Screw Extruders
Screw temperature is almost never known because it's complex to get. Here, however, obtaining it provides extrusion process details, such as how the solid bed is pushed downstream and cooling the screw with increasing screw speeds.
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Consistent Parts Require Consistent Cooling
Cooling issues are common. Fixing them doesn't cost much, but ignoring them can drain profits and productivity. Learn how to optimize cooling consistently.
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Remembering Bruce Maddock: A Pioneer in Single-Screw Extrusion Technology
The work this researcher conducted in single-screw extrusion decades ago is still being applied today.
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Back to Basics: Tandem Foam Sheet Extrusion
This complex process requires precise equipment and process expertise to produce high-quality sheet. Here’s what you need to know to get started.
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Polymer Selection: Identifying the Ideal Material for an Outdoor Application
What you should consider when selecting a plastic for an outdoor application that will have fun, and not failure, in the sun (and everything else outside).
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Building a Screw-Cooling System
Screws have been cored for cooling since the early 1960s. In many processes, however, screw cooling is not utilized. Here’s an optimal design for a screw-cooling system.
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Polymerization Made Simple: Basics for Understanding Plastic Behavior
Why knowing how polymers are made helps you work smarter with plastics.
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Bringing Order to the Chaotic Debate of Turbulent Flow in Injection Molding
Is turbulent flow required for all cooling channels to optimize the cooling process in injection molding? It depends. Author reviews the Reynolds number, advanced cooling technologies, simulation’s potential role and more.
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The Importance of Specific Mechanical Energy During Scaleup in Twin-Screw Extrusion
In this case study, the specific mechanical energy obtained on the laboratory scale TSE served as a key parameter and reference for subsequent scaleup activities.
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