Spinng Section
- 1. TOPIC: Spinning Section – Yarn Manufacturing SHANTO MARIAM UNIVERSITY OF CREATIVE TECHNOLOGY
- 2. Presented BY: Md. Mominur Rashid 162 051 043 Group: A Semester: 9th Batch: 27th Dept.: AMMT Titan Group’s Member Nargis Sultana Parvin 162 051 048
- 3. Keya Yarn Mills Ltd is the third and the largest of the spinning mills in Bangladesh. The company was incorporated in 1999. Located at Jarun, Konabari, Gazipur. The area of the factory about 50 acres. The industry employs about 800 persons (Male & Female).
- 4. FIBER, YARN & Spinning Fiber:- A unit of matter characterized by flexible, fineness, elasticity, sufficient strength and a high length to width ratio. Example: Natural- (Cotton, Jute, Wool, Silk) Manmade- (Viscose, Polyester) Yarn:- Yarns are a grouping of fibers twisted together to form a continuous strand. Example: Staple or filament yarn. Spinning: Spinning is the process by which fibers are converted into yarn.
- 5. Cotton Bale Blow room Carding DrawingCombingDrawing Roving / Speed / Simplex Frame Ring Spinning Yarn PROCESS FLOW CHART OF SPINNING
- 6. The section where the supplied compressed bale is turned into a uniform lap by opening, cleaning, blending or mixing. BLOWROOM
- 7. Opening: Open the cotton bales. Cleaning: Eliminate dust, dirt, broken leaf, seed particles, grass. Blending / Mixing: By Blending / Mix different typesof cotton produce a comparatively good quality cotton. Lap Forming: Convert the opened and cleaned fiber into a sheet form. FUNCTIONS OF BLOWROOM
- 8. FOW CHART OF BLOWROOM (MODERN) Bale Plucker Metal Detector Uniclean Unimix Uni flex Vision Shield Condenser Chute Feed Carding
- 9. CARDING Carding is the reduction of entangled mass of fibers to filmy web by working them between two closely spaced relatively moving surfaces closed with sharp points.
- 10. FUNCTIONS OF CARDING M/C To remove the small trash particles. To give some degree of blending. To eliminate the remaining impurities. Reduction of neps. Fiber orientation. Elimination of short fibers.
- 11. COMBING The process of straightening or parallelizing of fibers and removing of short fibers and impurities by using brushes and rollers is called combing.
- 12. OBJECTIVES OF COMBING To remove naps in the carded sliver. To make the fiber more parallel and straight. To produce a uniform sliver of required per unit length. To remove the fiber than a predetermined length. To remove remaining impurities in the comber lap. Formation of silver having maximum possible evenness.
- 13. DRAWING Drawing is the process in which the slivers are blended, doubled, leveled and drafted by passing the silvers through a series of pairs or rollers.
- 14. FUNCTION OF DRAWING M/C To straighten the crimped and hooked fibers. To achieve a fairly through parallelization of the fibers. To improve the short, medium and long term unevenness of the slivers by doubling. To produce a more uniform slivers. To reduce the weight / unit length of the card sliver.
- 15. ROVING/SPEED/SIMPLEX FRAME Simplex is an intermediate process in which fibers are converted into low twist lea called roving. Operations Involved in Simplex Machine: i. Creeling ii. Drafting iii. Twisting iv. Winding v. Building vi. Doffing
- 16. FUNCTIONS OF ROVING/SIMPLEX FRAME To prepare the package for the R/F. To draft the sliver to reduce weight per unit length. Insert small amount of twist to give required strength of roving. Wind the twisted roving on to the bobbin. Build the roving in bobbin such a form which will facilities handling, withdrawing and transfer to the next process.
- 17. RING FRAME Spinning process is done by the Ring frame machine. Ring frame converts the bobbin into yarn. Functions of ring frame: Draft the roving until the required fineness is achieved. Twist the drafted strand yarn of required count and strength. Winding the twisted yarn on to the bobbin for suitable storage, transportation and further processing.
- 18. AVVANTAGES OF RING SPINNING SYSTEM i. Any type of material (fiber) can be spun. ii. Wide range of count can be processed. iii. It delivers a yarn with optimum characteristics. iv. Idealized twisting system. v. It is uncomplicated and auto operate. vi. Higher yarn strength can be achieved. DISAVVANTAGES OF RING SPINNING SYSTEM i. Low production. ii. Machine generates more heat .