Extrusion Know How
Mission (Nearly) Impossible: Estimating Extrusion Melt Temperature
Extrusion processors often ask screw designers to estimate the output and melt temperature of a new design in the works. Projected output of a new screw can usually be estimated fairly accurately. Melt-temperature estimate, however, is another story
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Get Smarter on Extruder Sizes
Processors tend to recommend a much larger extruder than what’s really necessary for the job and the capabilities of the downstream equipment.
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What’s the Deal With High-Speed Extruders?
If we are talking about extruder screw speed, how about 1800 rpm? That’s how fast some extruders are running today.
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Water, Oil, Air, or None?
There is no one 'best' barrel cooling medium, but there seems to be a shift in the industry toward air cooling.
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Well, It Worked on Brand X
You need to give your designer a lot more data than that to make sure you get a screw that's right for you.
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‘Wedging’ Can Cause Severe Screw Wear
In a column I wrote for the July 2011 issue, I discussed the value of conducting “forensic” examination of worn screws when they are removed for clues to design flaws.
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How Fillers Impact Extrusion Processing
Their addition can significantly change the processing properties of a polymer.
Read MoreBenchmark Your Extruders For Quicker Processing Fixes
Not recognizing output reductions and resolving them quickly can cost a lot of money. Benchmarking your machines will help.
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