Know How - Extrusion

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Published: 6/1/2010

Extrusion & Thermal Properties: Not Just for the Lab Guys
Do you really need to know how thermal properties of polymers affect extrusion?

Published: 5/1/2010

Single-Screw Mixing 101
Almost all processes using a single screw require some degree of mixing, whether it’s just to homogenize regrind with virgin resin or to mix in some color concentrate.

Published: 5/1/2010

How to Spec a Flat Die
So it’s time for you to buy a new die for film or sheet.

Published: 4/1/2010

How Much Regrind Can You Handle?
Most extrusion operations generate scrap, and in the case of sheet for thermoforming it can exceed 70% of total output.

Published: 3/1/2010

Communication Is Key in Designing Blown Film Dies
Over the years I have bought, designed, or helped design quite a number of blown film dies.

Published: 3/1/2010

Don't Get Burned by Adapters & Flow Pipes
Does degraded or burned polymer seem to show up when you least expect it?

Published: 2/1/2010

Having Output Problems? Check Your Feed-Port Design
With an extruder, like all other devices, “it can’t come out unless it goes in first.” That’s the first thing I remember when I am asked to figure out why an extruder is performing below expectations.

Published: 1/1/2010

Extrusion Know-How: The Whys & Hows (& Ifs) of Vented Extruders
Vented or two-stage screws only make sense when volatiles must be removed in order to make a satisfactory product.

Published: 12/1/2009

Extrusion Know-How: Proper Alignment Saves Wear & Tear ... or Worse
Is extruder alignment important?

Published: 11/1/2009

How Much Horsepower Do You Need?
Most extrusion processors know that in order to boost output you need more power.