#BESTPRACTICES

Injection Know How

Three Key Decisions for an Optimal Ejection System

When determining the best ejection option for a tool, molders must consider the ejector’s surface area, location and style.
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Testing

Take These Steps to Optimize Your MFR Data

Make your life easier by paying close attention to the procedural steps detailed in the test standards.
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Recycling

Follow These Tips to Give Your Granulator Blades the Edge

Here are answers to some frequently asked questions—and troubleshooting advice—to help you maintain your granulator blades. 
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Injection Molding

Get Better at Quoting Injection Molded Parts: Part 3

Follow these detailed tips to get the jobs you want. This installment focuses on the mold and the molding machine.
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Extrusion

Use Rheology and Flow Simulation to Troubleshoot Extrusion Processes

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.  
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Extrusion Know How

General-Purpose Screws on the Comeback?

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.
#bestpractices #sustainability

November 2020’s Most-Viewed Articles

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.
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Injection Molding

How to Automate High-Precision ‘Micro’ Insert Molding

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.
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Extrusion

Troubleshooting Pressure Fluctuations in Piston-Type Melt Filters

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.
#bestpractices #processingtips

Injection Molding

PT Tech Days Continue to Inform

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.
#bestpractices #industry4-0 #editorial

Automation

How to Plan and Implement Automation in an Injection Molding Plant

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.  
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Injection Know How

Residence Time and Residence-Time Distribution—Part 1 of 2

Failing to calculate and accurately account for residence time can compromise material integrity before it’s even injected.
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Injection Molding

Injection Molding: Understand the Link Between Feed Throat Temperature & Bridging

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.
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Pipe, Profile & Tubing Extrusion

When to 'Adapt,' When to Retool?

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.
#processingtips #bestpractices

Pipe, Profile & Tubing Extrusion

PART ONE How to Determine Viscosity Data Using a Slit-Die Viscometer

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.
#bestpractices #dies

Testing

Materials Knowledge Pays Off at Teel Plastics

Well-equipped and well-staffed testing lab elevates competence of custom processor.
#bestpractices #technologyinaction

Medical

How to Improve Production of Catheters and Stents

Advances in downstream extrusion equipment have boosted production control.
#processingtips #bestpractices

Molds & Tooling

Tooling: The Lowdown on Guided Ejection Systems

  When, where, how and why to use them.  
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Extrusion

Shopping for a Barrel? Consider the Full Cost of Ownership

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.
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Molds & Tooling

'10 Things We’re Seeing in Machine Shops Right Now'

Metalworking shops and plastics plants make for interesting comparisons of their responses to the COVID-19 challenge.
#bestpractices #industry4-0