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 106 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?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

For a complete list of videos, visit our video library