Know-How
MATERIALS: The Problems with Single-Point Data, Part 7
The industry can choose between continuing to perform DTUL tests that provide single points that are part of a curve never seen, or perform the test that provides the entire curve.
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TOOLING: Dealing with Lifters--Part 2
This installment delves into more detail on some variables of design and fitting/timing of the lifters, which can cause issues or failures during molding.
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EXTRUSION: The Two Main Causes of Screw Wear
Wedging and misalignment are often confused with each other when inspecting a worn screw.
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INJECTION MOLDING: Gate-Seal Testing Done Right
Follow these 16 steps to perform the experiment and learn what is best for your part and process.
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MATERIALS: The Problems with Single-Point Data--Part 6
Data sheets can be limited in the information they provide on how the material performs at elevated temperatures.
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TOOLING: Having Trouble with Lifters?
Lifters can cause tool maintenance, repair, and processing issues if not designed properly. Here we begin a series on how to avoid all this.
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EXTRUSION: Pellet Geometry Can Impact Output
A simple angle-of-repose experiment can help you determine how your pellets will feed.
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INJECTION MOLDING: Why Pellet Size and Shape Are Important
Uniformity is needed to help ensure melt quality.
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MATERIALS: Impact Testing: The Problems With Single-Point Data
Knowledge of test conditions and graphical data showing the course of the impact event can help provide engineers and designers with the information they need to make informed choices about material toughness.
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RECYCLING: Recycling’s ‘Vision’ of the Future
Optical sorting technology continues to help push advances in plastics recycling.
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