Pksc 4300 Exam 2 - Joey's Version Questions And Correct Detailed Answers With Complete Solutions | Graded A+

PKSC 4300 Exam 2 - Joey's Version



1. clarity, crystallinity, dimensional stability/shrinkability, gloss: 4 reasons why we orient


films:

2. orientation: process of aligning polymer chains in a direction


3. random, arranges: natural cooling of polymer causes polymer chain orientation, however


stretching the film polymer chains.

4. strength, stiffness, stability: Stretching the film in one or two directions increases the ,


and dimensional (helpful for printing)

5. monoaxial: one direction orientation;


strength only matters in one direction;

6. monoaxial: offers directional tear;


machine direction

7. biaxial: two directions orientation;




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,8. biaxial: offers strength, stiffness, and dimensional stability in two directions


9. biaxial: most print films in laminations are biaxially oriented


10. tentering: this method of orientation typically begins with a cast film


11. double bubble: this method of orientation typically begins with a blown film


12. machine direction orientation (monoaxial stretching):



13. sequential biaxial oriented tentering machine:


14. simultaneous biaxial oriented tentering machine:


15. double bubble biaxial orientation:




16. Tubular Simultaneous: Which has better MD/CD balance? Flat Sequential or Tubular Simultaneous?


17. Flat Sequential: Which has better thickness uniformity: Flat Sequential or Tubular Simultaneous?



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, 18. Flat Sequential: Which has more film flatness: Flat Sequential or Tubular Simultaneous?


19. Tubular Simultaneous: Which has more randomization: Flat Sequential or Tubular Simultaneous?




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