This topic contains a solution. Click here to go to the answer

Author Question: Describe the four basic methods of creating a foam. What will be an ideal ... (Read 107 times)

BrownTown3

  • Hero Member
  • *****
  • Posts: 564
Describe the four basic methods of creating a foam.
 
  What will be an ideal response?

Question 2

Define and describe slush molding.
 
  What will be an ideal response?

Question 3

Discuss the advantages of casting over other plastic molding operations in equipment size and cost.
 
  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

heinisk01

  • Sr. Member
  • ****
  • Posts: 329
Answer to Question 1

Mechanicalvigorously mix the resin with a gas

Answer to Question 2

Slush molding is a process that uses a powdered resin suspended in a nonvolatile solvent as the starting material. The mold and processing equipment can be similar, at least in function, to standard rotomolding equipment. The mold is filled with the liquid material and is then heated and rotated so that the walls are uniformly coated with material that sticks as it becomes hot. When the material

stuck to the walls of the mold has reached the desired thickness, the mold rotation is stopped and the excess liquid is poured out of the mold. The mold is then returned to the oven and rotated until fused. The cycle is completed by cooling and then unloading the part.

Answer to Question 3

Cell casting does not use high pressures and can, therefore, use a much wider variety of materials for molds and other processing equipment. Hence, the capital costs associated with casting are usually much less than would be required with other plastic processing methods. The absence of a need to withstand high pressures also means that casting can be used for making very large parts.




heinisk01

  • Sr. Member
  • ****
  • Posts: 329

 

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

For a complete list of videos, visit our video library