best practices
MATERIALS: The Problems with Single-Point Data
Engineers who are used to working with metals are surprised that plastics cannot operate as close to their yield points as can metals. The yield point is not enough to tell you how the material reacts to stress.
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Keep Your Screen Changer In the Flow
The screen changer plays an essential role in generating quality extrudate. Here’s what you need to know to keep it functioning properly.
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Switch to Bioplastic Helps Molder ‘Go Green’
Labcon opts for surgarcane-derived HDPE to make its packaging more earth-friendly.
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TOOLING: Venting: Where And How Deep?
After last month’s introduction to the subject, let’s get into the details on vent depths, land lengths, and the alternatives to perimeter venting.
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EXTRUSION: Cooling: The Critical Function in Extrusion
Figuring out how much cooling your process needs is complicated. But there are ways to approximate.
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INJECTION MOLDING: How to Specify an Injection Molding Machine
With the market percolating, more molders are looking at new presses. This series will discuss what you should consider before writing a check, beginning with the clamping unit.
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Bag ‘Commander’ Brings Innovation And Service to Can-Liners
Aluf is a huge supplier of industrial and consumer can liners that—despite its size—is fast, flexible, and customer responsive.
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CT Scanning Gives Precision Molder X-Ray Vision of Part Quality
It beats other techniques for measuring critical part dimensions, and it provides unique visibility inside parts, nondestructively. One molder’s experience illustrates the benefits.
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Molder Cuts Post-Purge Costs and Downtime in Half
By switching to a new purging compound, IMCO now can complete a changeover in 10 min.
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Know Your Options for Foaming Sheet
Tandem extrusion of PS is still the standard technology, but new materials options and equipment technology are emerging.
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