Exploring the: PET Processing - Extrusion Zone



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EXTRUSION: Effect of the Screw Flight On Melt Temperature, Energy Use
So-called rules of thumb regarding the design of flight clearance and width do not consider the temperature effect, both from the point of view of melt temperature and energy efficiency.
Columns Published: 4/23/2014
Telltale Temperatures
Here's how to get a 'feel' for a screw design without actually seeing it. And how to use this information.
Columns Published: 12/29/2013
What About Melt Strength?
All extrusion processes depend to some degree on the melt strength of the polymer, and this property is generally a no-show on data sheets.
Columns Published: 5/28/2013
PBT & PET Polyester: Part 2 The Performance Factor
All things being equal, PET will outperform PBT mechanically and thermally. But the processor must dry the material properly and must understand the importance of mold temperature in achieving a degree of crystallinity that allows the natural advant...
Columns Published: 10/26/2012
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.
Columns Published: 6/26/2012
Dead Screw Talking
There's a lot you can learn by conducting a post-mortum examination of your screw.
Columns Published: 6/27/2011

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