processing tips

Follow These Tips to Power Up Your Purging Process

A properly executed purging process can save processors thousands a year in lost production while helping them increase output and avoid scrap. Here’s how to optimize your results.

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best practices

Tooling: Tunnel Gates for Processors, Part 2

What you need to know to overcome problems out on the production floor.

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best practices

Injection Molding: Melting Amorphous vs. Semi-Crystalline Plastics

Understanding the differences in how each melts is crucial to obtaining melt uniformity.

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A Processor’s Most Important Job, Part 2: Crystallinity

Process conditions help determine the difference between the maximum degree of crystallinity that can be achieved in a polymer and the degree that is present in a molded part.

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Film Extrusion

Air-Ring Upgrade Pumps Up the Output

Film processor Dallas Plastics boosts throughput by as much as 40% by retrofitting a new air ring—without the need for IBC.

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polyolefins

Why Drying Polyolefins Might Be Right for Your Process

From a technical standpoint, drying non-hygroscopic materials such as polyethylene and polypropylene may not be necessary. However, doing so may be advantageous to your process. Here are details.

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Determining Vent Depths in Injection Molding

Experiments reveal the relationship between vent depths and part thickness, allowing molders and moldmakers to more precisely determine vent dimensions.

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A Processor’s Most Important Job, Part 1: Molecular Weight

Many processors don’t realize that preserving material characteristics is crucial to product success and failure. The focus here is on molecular weight.

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best practices

What You Can Learn From Pharma Compounders

Twin-screw extrusion has been a standard in plastics compounding for decades but has only recently been embraced by the pharmaceutical industry. Here’s what plastics compounders might learn from the ‘newbies’ to help make a better, more consistent product.

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Extrusion: How Hopper Crammers Can Help Feeding

A crammer can assist the flow of certain polymers into the extruder. But the design is not universal and very material dependent. Here’s what you need to know.

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Process Cooling