Wastage produced in spinning process.
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Tanmoy Choudhury submitted a document to Ms. Mahmuda Chowdhury about wastage produced in the spinning process. The document defines spinning, wastage, and lists the main types of wastage at each stage of spinning including blow room, carding, draw frame, combing, simplex and ring frame. It provides percentages of acceptable wastage for different stages. The document discusses the concept of wastage control versus wastage management and lists procedures to reduce wastage such as raw material selection, machinery settings and supervision.
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Wastage produced in spinning process.
- 1. Submitted by: Tanmoy Choudhury ID: 181-240-801 Dept. of Textile Engineering Submitted to: Ms. Mahmuda Chowdhury Lecturer, BUFT
- 3. What is Spinning? • Spinning is the twisting together of drawn-out strands of fibers to form yarn, and is a major part of the textile industry • The yarn produced then used to create textiles, which are then used to make clothing and many other products
- 4. Wastage: • The action or process of losing or destroying something by using it carelessly or extravagantly. Waste includes all items that people no longer have any use for, which they either intend to get rid of or have already discarded. • In practical, Input – Output = Wastage
- 5. Types of Wastage: • Blow room wastages • Carding wastages • Draw Frame wastages • Wastage in Combing • Wastages in Simplex • Wastages in Ring Frame
- 6. List of Blow room wastages: • Droping-1 • Droping-2 • Seeds • Leafs • Dust • Lapcut • Filter waste • Filter dust • Floor sweep
- 7. List of Carding wastages: • Modes & flyer • Flat strip • Taker in waste • Sliver cut • Filter waste • Filter dust • Floor sweep
- 8. Draw Frame wastages: • Filter waste • Bonda • Sliver cut
- 9. List of Wastage in Combing: • Noil: As per desired & quality of the end product to be produced. • Minilap Wastage: 0.25% • Sliver Wastage : 0.25% • Roller Wastage : 0.25% • Fly Dust: 0.10% • Sweeping: 0.20%
- 10. Wastages in Simplex: • Sliver • Roller Waste/Bonda • Pneumaphil Waste • Roving Waste • Sweeping Waste • Clearer waste • Invisible Waste • Note: Above 0.50% of total amount of wastage is not acceptable
- 11. Wastages in Ring Frame: • Pneomaphil: 0.20-0.30% • Bonda: 0.20-0.30% • Roving waste: 0.10-0.20% • Thread waste: 0.10-below • Fly dust: 0.20% • Sweeping waste: 0.20% • Note: Total wastage is not more than 1%
- 12. Concept of Wastage: • Wastage Control(Previous Concept) = Wastage Production+Wastage Reduction • Wastage Management (Present concept) = Wastage Production+Wastage Utilization
- 13. Wastage Reduction Procedure: • Raw materials selection • Spindle speed • Setting(Rollers, R/T, Traveller cleaner etc) • Twist of yarn • Machinery condition • RH% and Temperature • Proper material handling • Adequate supervision