Author Question: Discuss three operational steps that can be taken to reduce the thickness of an extruded part. ... (Read 179 times)

shenderson6

  • Hero Member
  • *****
  • Posts: 573
Discuss three operational steps that can be taken to reduce the thickness of an extruded part.
 
  What will be an ideal response?

Question 2

Explain the effect of molecular weight distribution on extrusion.
 
  What will be an ideal response?



Hdosisshsbshs

  • Sr. Member
  • ****
  • Posts: 315
Answer to Question 1

The drawdown can be increased by speeding up the puller with respect to the speed of the extruder.

Answer to Question 2

Short, low molecular weight polymers will melt sooner than long polymers and will therefore act as lubricants for the longer, higher molecular weight polymers in the same resin. The longer polymers, however, give melt strength to the resin. Therefore, extrusion resins would generally have a wide molecular weight distribution so that the resin would flow easily but still have good melt strength.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

shenderson6

  • Hero Member
  • *****
  • Posts: 573
Both answers were spot on, thank you once again




 

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

For a complete list of videos, visit our video library