Articles

processing tips

Improve The Cooling Performance Of Your Molds

Need to figure out your mold-cooling energy requirements for the various polymers you run? What about sizing cooling circuits so they provide adequate cooling capacity? Learn the tricks of the trade here.

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Extrusion

Cooling the Feed Throat and Screw: How Much Water Do You Need?

It’s one of the biggest quandaries in extrusion, as there is little or nothing published to give operators some guidance. So let’s try to shed some light on this trial-and-error process.

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A Simpler Way to Calculate Shot Size vs. Barrel Capacity

Let’s take another look at this seemingly dull but oh-so-crucial topic.

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best practices

Formulating LLDPE/LDPE Blends For Abuse–Resistant Blown Film

A new study shows how the type and amount of LDPE in blends with LLDPE affect the processing and strength/toughness properties of blown film. Data are shown for both LDPE-rich and LLDPE-rich blends.

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industry 4.0

Seven Automation Opportunities You May Have Overlooked

While not every process is appropriate for automation, the rapid advancement of robotics is allowing a much wider array of 911爆料网es access to this technology. Here are some areas where automation makes sense that you might not have considered.

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How to Get Rid of Bubbles in Injection Molding

First find out if they are the result of trapped gas or a vacuum void. Then follow these steps to get rid of them.

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Getting Charged Up About Electric Vehicles

Metal-to-plastics replacement stories are a classic of the genre for plastics publishing, and nowhere more so than in the automotive space.

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Understanding Strain-Rate Sensitivity In Polymers

Material behavior is fundamentally determined by the equivalence of time and temperature. But that principle tends to be lost on processors and designers. Here’s some guidance.

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Commodity Resins

Density & Molecular Weight in Polyethylene

This so-called 'commodity' material is actually quite complex, making selecting the right type a challenge.

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sustainability

Lots to Say About Recycling

In our July issue, we have two features with a recycling bent. We also have a new editor on board to track and report on future developments in this critical industry segment.

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Creating a Capable Process Using Process Capability

Know your Cp from your Cpk and how parts can meet dimensional specifications but still not be “capable.”

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Recycling

Kreyenborg’s Take on the Current Status of Plastics Recycling

As part of a series of industry interviews leading-up to K-2022, VDMA interviews Jan Hendrik Ostgathe, Kreyenborg managing director.  

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Plastics Size Reduction