1. The polyurethane foam cell is shaped like:
| A. hexagonal pentagon | B. pentagonal dodecahedron |
| C. tri-tetrahedron | D. None of the above |
2. Density is measured in:
| A. pounds per cubic foot | B. kilograms per cubic meter |
| C. kilograms per cubic centimeter | D. A & B |
3. What does IFD stand for?
| A. Internal Force Deflection | B. International Foam Detail |
| C. Indentation Force Deflection | D. Intentional Foam Density |
4. When you divide the 65% IFD by the 25% IFD, you get the:
| A. Density | B. Flex Fatigue |
| C. Durability | D. Compression Modulus |
5. The key to all foam applications is:
| A. Support | B. Comfort |
| C. Durability | D. All of the above |
6. The empty spaces the struts in FPF cell formation are called: _____________
7. A softening or loss of firmness in the foam is called _____________________
8. What is measured by dropping a steel ball onto the foam cushion and
measuring
how high the ball rebounds?
_______________________________
9. What is the ability of foam to maintain original support characteristics
after flexing called?
________________________________
10. Which is used for items such as carpet cushioning, bedding, furniture cushioning and automotive seating?
Rigid polyurethane foam Flexible polyurethane foam
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