23 questions about Textile class.

TEXTILES 101 – QUIZ #3 (TAKE HOME) DUE 10/7/2014 RAPA – T/R 7PM-8.15PM Name:

Multiple Choice 1. Teflon is a A. polyamide B. polyester C. natural fiber D. fluoropolymer E. polyacrylonitrile

2. This high performance fiber is naturally black in color A. lyocell B. vinal C. carbon D. kevlar E. acrylic

3. This fiber is known for its high heat resistance. A. Jute B. Nomex C. Nylon D. Polyester E. Lastol

4. Common characteristics of synthethic fibers include A. oleophilic B. hydrophobic C. heat sensitivity and heat settability D. Only A and C above are correct E. All of the above are correct

5. Products with power stretch require fibers with A. high creep B. high retractive forces C. high drape D. high elongation E. high tenacity

6. Which yarn below is typically used for heavy, coarse denim yarns? A. open end spun B. slub C. woolen D. worsted E. chenille

7. This fiber is often listed as “Polyamide” in Europe on clothing labels A. Melamine B. Kevlar C. Dacron D. Nylon E. Teflon

8. These yarns have low twist, less cover, and do not lint or pill A. metallic yarns B. filament yarns C. crepe yarns D. spun yarns E. novelty yarns

9. This fiber is made from a biopolymer, but it is not a regenerated fiber. A. Tactel B. Tencel C. Supplex D. Acrylic E. PLA

10. A fabric of polyester warp and rayon filling is a A. triaxial yarn B. blend C. mixture D. multifilament E. combination

11. This yarn contains only long fibers. The short fibers have been removed A. worsted yarn B. combed yarn C. woolen yarn D. Only A and B are correct E. All of the above are correct

12. Fibers may be blended to A. improve performance B. improve comfort C. reduce cost D. All of the above are correct E. Only A and B are correct

13. One indirect yarn numbering system is the: A. woolen system B. tex system C. fixed weight system D. novelty yarn system E. denier system

14. Yarn number refers to the A. number of components or plies in a yarn B. number of 380 yard hanks per pound C. number of fibers in the yarn D. size of the yarn E. denier of each fiber in the yarn SHORT ANSWERS 15. Name the two additional processes required in Ring Spinning that other spinning methods

do not require:

16. Why is glass fiber not used in clothing?

17. You have been asked to design a protective outfit for a Journalist covering the war in Syria. He/she may come into contact with explosions, fire and bullets. Describe the characteristics of ONE fiber you may incorporate into the outfit.

18. Describe a method of texturing yarns:

19. What happens during the carding stage of yarn spinning:

20. What happens during the roving stage of yarn spinning:

21. What yarn spinning method is typically used for bed-sheets due to its uniformity and speed?

22. You are designing a composite Bobsled for the Winter Olympics. What fiber would you select and why?

23. Is this yarn an S-twist or Z-twist yarn?

24. Name the following novelty yarns:

a)

b)