PT ZONE: PET Processing - Extrusion

Granulate or Shred: Which Makes Sense for You?
That is the size-reduction question confronting many processors today. Look here for some guidance. More (+)
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. More (+)


MOST RECENT CONTENT: PET Processing - Extrusion

Octal to Start PET Sheet Extrusion in Ohio

APET sheet to be made exclusively from sheet flake.

EXTRUSION: Another Way to Extrude PET Without Drying

A planetary-roller section allows efficient degassing.

Compounding PLA on Twin-Screws: What Testing Reveals

Twin-screw extrusion is the preferred method for compounding PLA and other biopolymers. But processing PLA is complicated because it’s sensitive to heat and shear. It’s also prone to hydrolytic degradation if moisture is present in molten PLA. Here’s what one machine builder’s trials revealed.

Use Your Gauge to Solve Processing Issues Upstream

Gauging systems have an often-overlooked but equally important role beyond measuring web thickness: They can be used as a diagnostic tool to troubleshoot the process. Here's how.

Top 10 Extrusion Items in 2013

Here's a quick rundown of things that caught my eye--and likely the attention of extrusion processors, in 2013.

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OVERVIEW:
PET Processing - Extrusion

PET extrusion.jpg

Zone overview hereIn extrusion, most PET is processed into sheet for food packaging applications. The PET sheet is subsquently thermoformed--in some cases in line with the extrusion process--into products such as drinking cups, trays, clam shell containers and the like. Industrial applications for PET include point of purchase signs, display fixures and glazing. Gylcol-modified PET (PETG) is commonly used in sheet structures used to package medical devices because it can stand up to gamma irradiation.


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