Lab Assignment Spun yarn vs. Filament yarn Spring 2018 PDF

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TAM 2200 Science of Textiles Assignment: Spun Yarn vs. Filament Yarns PLEASE NOTE: The lab assignment must be complete and demonstrated for ANY points to be assigned to your lab. If you fail to complete the lab but answer the questions related to the lab you will receive ZERO POINTS!

Objective: To gain a better understanding of the difference between spun yarns and filament yarns and to recognize the product performance of each type of yarn. Materials Required: USE Lab Kit 3  6- Cotton Balls  Instructional video (found in this week’s weekly module, lab assignment folder) Other Materials Needed:  Swatch samples from Swatch Kit (Eco Edition) Procedures: 1. Use a cotton ball and pinch a small section (triangle) of fibers and start to pull it away from the rest of the fibers. 2. Roll your thumb back away from the tip of your index finger to add some twist to draw triangle as you continue to pull the triangle away from the other fibers. 3. Continue this process until you have created a yarn two inches long and one four inches long. 4. Observe your findings. 5. Answer the questions based on your observation on the answer sheet below. 6. Review the swatch samples listed below and answer the questions related to these swatch samples. 7. Take pictures of the yarns after you have completed the process indicated above. a. You may need to resize the picture to accommodate submission of your assignment. i. Determine how to edit your photo using the photo editing software on your computer. Resize to @ 448 x 336 px or smaller to allow for faster upload of the assignment. b. Save these images as .jpeg and then copy and paste the image into the answer sheet below. c. *Insert images into your answser sheet for submission DO NOT ATTACH THEM AS SEPARATE FILES. Make sure you are embedding them into your document so that they are part of one file to upload. d. * DO NOT SUBMIT A .ZIP FOLDER AS AN ASSIGNMENT SUBMISSION. If you have multiple images follow the instructions above about resizing images or reducing the file size so that you can reduce the overall size of your file. It is difficult and sometimes impossible to open a zipped file.

8. Save your file using the following naming convention “Assignment Name_yourlastname.doc”. Example: “Finishing_Goswami_Saheli.doc”. (It is important that you use the exact naming convention with no spaces and no unusual characters or your file will not open) and then attach that file to your assignment page and submit. Note: When submitting your assignments it is always good to use a wired Internet connection and NOT a wireless internet connection as wireless can time you out and you will be unable to submit. Remember: Start your assignments early and upload early to provide yourself time to fix any upload or technological issues you may be facing. Continue to next page!

Lab Assignment: Spun Yarn vs. Filament Yarn Answer Sheet Student Name: ___Brianna Farbisz________________________________________________________ Student PawPrint: ________brfph5_______________________________________________

1. Describe spun yarns and filament yarns? What is the difference between the two? (2 pts)

Filament yarns are yarns that are often manmade in factories/laboratories that consist of using fibers such as nylon and polyester. You use multiple filament fibers to twist together and make them workable combined. Spun yarns are fibers that are twisted together through a process called spinning. Fibers used for this process are often cotton polyester and wool acrylic. Spun yarns consist of staple fibers.

What characteristics are relevant to a spun yarn and a filament yarn? Characteristics for spun yarn: -staple fibers -spinning process -Commonly used cotton polyester and wool acrylic Characteristics for filament yarns: -laboratory process -twisting process -commonly used nylon and polyester

2. Describe the process for producing spinning staple fibers (making spun yarns), what are the steps required. (2 pts)

There are many different ways to complete the spinning process. These processes consist of spinning filament tow with the tow-to-top system: using diagonal cutting or break stretching. Result of this system is being made to regular-spun yarn and using the breakstretch process. You could also use tow-to-yarn system: using a machine called a direct spinner. Result of tow-to-yarn is the fiber put into yarn size, twisted, and then wound to finish.

Discuss how you spun your yarns and which process you used to create your yarn? I used the yarn process of twisting and spinning with my fingers to create 2 pieces of yarn of different lengths/constancies. It was partially a break stretch process because because sometimes the fibers from the cotton ball would break apart and I would need to start on a new one to keep the fibers together.

3. How regular/uniform is your yarn? Discuss the regularity of each yarn (2” and 4”) is it uniform throughout, why or why not? (2 pts) a. I would say that my yarns are pretty uniform all the way through but no piece is perfect. There are still inconsistencies throughout due to the whole piece not being the exact same thickness down to the mill centimeter but for the most part they are pretty uniform throughout.

Insert a picture of your yarns after you have spun the fiber.

Photo of Spun Yarn – 2” Long

Photo of Spun yarn – 4” Long

4. Observe both spun yarns. Describe the look and feel of both yarns. Discuss the appearance of the yarns (fuzzy, protruding ends, space between yarns, luster, smoothness, etc). (2 points) 2 inch yarn- tighter woven and thinner consistency, not as fuzzy as it was before it was spun, 4 inch yarn- fuzzier than the smaller strip, thicker consistency, larger protruding ends due to the thickness of the fiber, closer consistency to the original cotton ball than the 2 inch strip

5. Pull (unravel) yarns from the following swatch kit samples and untwist them (roll the yarn between your thumb and index finger to untwist. Place a check mark in the appropriate column to identify which samples are made of spun yarns and which are made of filament yarns. (2 points) Sample # (Eco edition) #4 #10 #12 #17 #26 #27 #30 #34

Sample Name Pinpoint Oxford Burlap Wool gauze Doupioni Silk Cordura Fabric Sold as China Silk Polartec Fleece Duponte Sorona

Spun Yarns X

Filament Yarns

X X x x x x

#37 #39

#40

Olefin Upholstery Sunbrella Renaissance Heritage Swimwear

x x

x...