Make your life easier by paying close attention to the procedural steps detailed in the test standards.
Let’s take the mystery out of rheology by showing how the wealth of information it provides can be used by processors to solve real-world production problems.
They are being specified more often for recycling applications to increase flexibility. But there is still no such thing as a GP screw and recyclers need to consider other processing approaches.
These articles garnered the most reader attention among stories posted in November 2020 by Plastics Technology: implementing automation, gauging residence time, the history of polymers and more.
Piston filtration offers many advantages over other systems. While pressure fluctuations could be regarded as their weakness, there are many ways to avoid them, both from the mechanical and the process side. Small adjustment can make a huge difference in the overall performance and efficiency of the system.
What does it take to automate a horizontal injection molding cell to handle micro-sized inserts and molded parts? General-purpose top-entry robots and tooling may not be up to the job.
There is no “one size fits all” solution in automation. When considering what it would look like in your plant, hone in on the staff, products, space, and goals that are specific to you and the automation system that you will be installing.
When determining the best ejection option for a tool, molders must consider the ejector’s surface area, location and style.
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Failing to calculate and accurately account for residence time can compromise material integrity before it’s even injected.
Save time and money by properly controlling the feed-throat temperature. In some cases—but not all—it can help you solve a bridging problem.
That is the question pipe and tubing processors typically confront when they specify a line for one product, only to have to add to the product mix when business conditions change. Here are some tips to guide you to the right answer.
Well-equipped and well-staffed testing lab elevates competence of custom processor.
Here are answers to some frequently asked questions—and troubleshooting advice—to help you maintain your granulator blades.
Using a slit-die viscometer connected to a lab extruder can generate accurate data on melt viscosity at various shear rates and temperatures, a useful QC tool in processing.
When, where, how and why to use them.
Beyond just the “invoice price” of a barrel, processors should consider factors like the composition of the inlay, quality of the backing material, straightness, concentricity, machining imperfections and packaging/handling, to understand the true cost of owning a barrel.
Metalworking shops and plastics plants make for interesting comparisons of their responses to the COVID-19 challenge.
Focus on six key metrics to help you determine when a process is lined out and stable enough to start production.
Statistical process control (SPC) can help plastics processors determine the factors responsible for product quality variation and provide a roadmap for improving the production process.
Follow these detailed tips to get the jobs you want. This installment focuses on the mold and the molding machine.
Every processor should get hold of the viscosity curves for the polymers they use or contemplate using in their operations, and learn how to read them.
TPUs form physical, rather than chemical, crosslinks that can be broken by reheating. Formation of these crosslinks can be sped up by annealing, which improves a variety of properties.
Processors can extend the life of equipment and improve productivity by coupling a preventive-maintenance program for their screws and barrels with routine use of chemical purging compounds..
Follow these steps for proper die-spring selection and installation.
Beginning Oct. 8, we will be bringing exclusive, live, online technical content on a wide range of processing topics that you can access for free.
When utilized in a thoughtful way, the corotating intermeshing twin-screw extruder can transform recycled materials into value-added products and parts. Here’s what you need to know, and some real-world examples of the technology deployed for both post-industrial and post-consumer recycling.