Know-How
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?
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PART 2: The Importance of Mold Temperature When Processing Polycarbonate
Don’t be afraid to increase mold temperature to improve part quality when making PC parts. Take a look at a few examples here.
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Part 1: The Importance of Mold Temperature When Processing Polycarbonate
An often overlooked factor in optimizing the ductility of PC is the rate at which the polymer is cooled in the mold.
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How to Deal With Residual Stress in Molded Parts
Here are design, molding, and fixturing considerations to help you handle this unavoidable issue.
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Barrier Screws: Not All Are Created Equal
Let’s take a deep dive into parallel and crossing types and see where each fit in.
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How to Manage Pressure Loss in Injection Molding
Achieving a process window wide enough to ensure consistent part quality depends on achieving sufficient pressure at end of fill.
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Part 5: Heat Deflection Temperature vs. Dynamic Mechanical Analysis
In the final part of this five-installment series, we bring DMA to a practical level using the results for glass-filled nylon.
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How to Quickly Verify Your Machine & Process Setpoints
For a quick check of your process setup, the injection-pressure-vs.-time graph is your best tool.
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Why Barrel Temperatures Have a Small Effect on Melt Temperature
Extruders are not like ovens. Tweaking barrel-temperature profiles will not influence melt temperature all that much. Here’s why.
Read MoreThe 'Butterfly Effect' in Injection Molding—A Connected Process
In injection molding, a seemingly minor change in a setpoint can have a significant impact on part quality and process robustness and repeatability. That’s why Scientific Molding focuses on process outputs, not setpoints.
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