This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Describe how foamed plastic egg cartons are made. What will be an ideal ... (Read 43 times)

kshipps

  • Hero Member
  • *****
  • Posts: 571
on: Aug 19, 2018
Describe how foamed plastic egg cartons are made.
 
  What will be an ideal response?

Question 2

What is an integral skin, and how is it controlled?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Loise Hard

  • Sr. Member
  • ****
  • Posts: 340
Reply #1 on: Aug 19, 2018
Answer to Question 1

Foamed egg cartons are often made by thermoforming extruded foam sheets. The sheet is made by the normal extruded foam process. The thickness would be the same as that desired in the finished product. After the foam has stabilized, the foamed sheet can be thermoformed in-line so that the operation will move at the speed of the extrusion. The cartons can be trimmed from the sheet and the remaining material can be chopped and re-extruded.

Answer to Question 2

An integral skin is a tough outer layer of the foam that is formed when the cells collapse due to contact with the mold, with air, or with any other substance other than the foam. The amount of cellular collapse to create the integral foam can be controlled by adjusting the pressure and temperatures surrounding the foam, the temperature of the foreign material touched by the foam, and the presence of any other foreign substance, such as water or dust that might cause the cells to collapse.


kshipps

  • Member
  • Posts: 571
Reply 2 on: Aug 19, 2018
YES! Correct, THANKS for helping me on my review

amandanbreshears

  • Member
  • Posts: 320
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Chair made from tree Chair made from tree
Many plastic intake manifolds are constructed using many parts glued together to form complex ... Many plastic intake manifolds are constructed using many parts glued together to form complex ...
Some plastic intake manifolds are equipped with a pressure relief valve that would open in the ... Some plastic intake manifolds are equipped with a pressure relief valve that would open in the ...
(A) Unwrap each of the layers until the client is covered by just the plastic sheet and the towels ... (A) Unwrap each of the layers until the client is covered by just the plastic sheet and the towels ...
Made over Made better Made over Made better
Describe the Conceptual Forecasting Framework in your own words. Describe the Conceptual Forecasting Framework in your own words.
Video: How does an animal choose what food to eat?

For a complete list of videos, visit our video library