Yarn manufacturing process

Presentation

1. TEXTILE Yarn Manufacturing Presented By Name : Amit Biswas ID :143003014 Green University of Bangladesh

2. What is Textile? Textile refers to any material made of interlacing fibers; hence textile raw materials are those fibers capable of being converted into yarns and fabrics FIBER YARN FABRIC

3. TYPES OF YARN Staple or filament Single or plied or cord Simple or complex

4. DIRECTION OF YARN Yarns are twisted to hold the fiber together. S Direction Z Direction

5. YARN SIZE / NUMBER 1) Direct System Weight in grams of 9000 meters of yarn Denier Tex Decitex Weight in grams of 1000 meters of yarn Weight in grams of 10000 meters of yarn 2) Indirect System Yarn count (s) Length in hank of 1 pound of yarn (weighs) 1 hank = 840 yards

6. YARN SIZE / NUMBER EXAMPLES: 9,000 meters of yarn weighs 40 grams, it is 40 denier yarns. The higher the number of denier, tex or decitex , the coarser the yarn. 10 hanks of cotton yarn that weight one pound, this is 10s (count) yarn. The higher the number of yarn count, the finer the yarn.

7. YARN MANUFACTURING PROCESS BLOWROOM CARDING DRAWING ROVING RING FRAME COMBING

8. BLOWROOM first step of cotton yarn production for opening, cleaning and dust removal, blending, and prepared for carding process. CARDING DRAWING ROVING RING FRAME COMBING BLOWROOM

9. CARDING FUNCTIONS: Opening to the individual fibers. Elimination of impurities Elimination of dusk Disentangling of neps Elimination of short fibers Fiber blending Fiber orientation Sliver formation CARDING DRAWING ROVING RING FRAME COMBING BLOWROOM

10. CARDING Main Parts: Taker in - to open flocks out of the feed batt , to lead them to the dirt-eliminating parts under the roller and to deliver them to the main cylinder Main cylinder - separate the fibers, pull them into somewhat parallel form. Doffer - to take the individual fibers from the main cylinder and condense them to web form CARDING DRAWING ROVING RING FRAME COMBING BLOWROOM

11. CARDING MACHINE

12. DRAWING Functions: To improve evenness of the sliver To arrange fiber in parallel Blending Dust removal CARDING DRAWING ROVING RING FRAME COMBING BLOWROOM

13. COMBING to upgrade the raw material by removing the short fibers. Combed yarn is stronger, more uniform, has greater shine, smoother and purer Functions: Eliminate short fibers Eliminate remaining impurities Eliminate neps CARDING DRAWING ROVING RING FRAME COMBING BLOWROOM

14. Passage diagram of combing m/c

15. ROVING Functions: The attenuation of the sliver. Impart protective twist in order to increase the strength of slivers. Winding of the roving into a package that can be transported, stored and used on the ring spinning. CARDING DRAWING ROVING RING FRAME COMBING BLOWROOM

16. SPINNING final step on producing yarn Functions: Attenuate the roving until required fineness is achieved To impact strength to the fiber strand by twisting it To wind up the resulting yarn in a suitable for storage, transportation and further processing CARDING DRAWING ROVING RING FRAME COMBING BLOWROOM

17. SPINNING Front zone draft Middle zone draft Back zone draft