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PTFE 3720-QUIZ2 - Quiz 2 PTFE 3720 Fall 2010 Test Version C...

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Quiz 2 – PTFE 3720 – Fall 2010 – Test Version C Name ___________________________________ Student number ______________________________ 1. In long staple yarn manufacturing: a. All of the processing machines are the same as the ones used for short staple yarn manufacturing. b. The fibers are cut into short lengths so that they can be mixed with continuous filament fibers. c. The card is different than the card used in short yarn manufacturing. d. The card is not used to help align the fibers, since they are much longer than those used in short staple yarn manufacturing. 2. The following mechanism IS NOT used to insert the weft (or filling) yarn into a fabric during weaving: 3. Which one of the following mechanisms is used to raise and lower the warp yarns during weaving: 4. The reed in the weaving machine is involved in the ______________ loom mechanism. 5. The weave shown below is a ________________________________ weave. a. 2 x 1 right hand twill b. 3 x 2 left hand twill c. basket weave d. plain weave e. herringbone 6. The weave shown below is a _____________ weave. 7. How is a looped pile carpet different from a cut pile carpet?                                                 1
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8. What is the purpose of the sizing or slashing process? 9. Which type of polymer is easiest to recycle a. A thermoset polymer b. A mixture of polymers that are all thermoplastic c. A polymer with a high degree of crosslinking d. A thermoplastic that is made on one type of polymer e. A cured resin
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