Every material has its own unique set of physical attributes, and we must use the appropriate information and procedures to assure that our processes are sound and repeatable.
Register now to hear technology experts address a wide range of topics in plastics processing. And access our archives to tune in to what you may have missed. It’s free.
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.
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.
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.
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.
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.
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.
As with semi-crystalline thermoplastics, annealing can be used in thermosetting polymers to obtain a level of crosslinking that may not be possible within the molding cycle.
Some molding shops insist that all of their molds have springs to return the ejector plates. And there are lots from which to choose. Here we’ll focus on compression die springs for injection molds.
Here are some practical guidance and simple tools to help you better understand the process and improve your operation.
Some amount of scrap—generated in startup, shutdown or defective parts—is inevitable. How can you reclaim regrind into new profitable parts?
Coronavirus pandemic has made extrusion processors curious about entering the face-mask market. But melt-blown fiber is very different from most other extrusion processes and requires specialized equipment.
Get the sprue, runner and gate sizes close to ideal the first time around.