Tips to Improve Spinning and Nonwovens

1. Avoid low Microanaire and sticky cottons, Check for honey dew(Benedicts solution), sugar content and wax content; reducing sugar should not be more than 20%, wax content should not be more than 1% 2. Check Pneumafil Pressure at Ring frame, should be above 8inches at off side 3. Apply Anti Lap solution like Vickelstaff or Liquimix on cots 4. Increase the schedule for cot buffing, once in 2-3 months 5. Increase offset of front top roller 6. Avoid soft cots with p/c & p/v blends 7. Apply berkolisation treatment to cots or expose them to sunlight for 8 hours 8. Reduce RH in department 9. Reduce the amount of tint applied on polyester, should not exceed 0.2%, check compatability of tint to spinfinish 10. Check polyester fibre for spinfinish, variations in spin finich, static generation, agglomerations of oligomer on surface, abnormalities 11 Avoid damage to cots by training siders in removal of lapping 12. Use bigger diameter cots upto 30 mm for cotton and p/c blends 13. Increase weight of clearer roller, use plush type of clearer cloth

1. Avoid low Micronaire cottons, Minimum Micronaire 20s-4, 40s-3.8, 60s-3.6, 80s -3.4, 100s -3.2, Avoid cottons with high trash and seed coat content 2. Avoid harsh Blowroom treatment, 8% Trash - 6 beating points, 5% trash i. Micronaire 4 -5 beating points ii Micronaire 3.5 - 3 beating points, 3% trash i. Micronaire 4 - 3 beating points ii. Micronaire 3.5 2.5 beating points, 2% trash - 2 beating points 3. Carding - i.Higher cylider speed permissible by card design ii.Lowerproduction rate iii. Finer hank of sliver at a given production rate 1v. Higher wire point density for cylinder v. Higher flat speed vi. Petrol washing of cylider vii. Progressive reduction in grinding schedule with age of wire 4. Combing - i. Use of half laps with higher combing cycle ii. Precision in setting of half lap to nipper and top comb depth 5. Draw Frames - i. Optimise Roller Setting and Break draft, Front Zone setting - 2.5% span length + 2-3 mm, Break draft, Breaker - 1.3, Finisher - 1.1, post combed - 1.05 2. Use lowest permissible calender roller tension draft 3. Check top roller pressure 4. Check Autoleveller performance, CV of 0.5m should be below 1.2% Speedframe 1. Optimise Back Zone setting and spacer in front zone 2. Check top roller pressure 3. Use bigger diam cots 3. Use appropriate condenser size. Ring frame 1.Optimise Ringframe draft 2. Use softer cots(65 deg.) for cotton counts 3. Use step nose bar 4. Use bigger cot diam upto 30 mm 5. Employ heavier top roller pressure 6. Optimise spacer 7. Use low break drafts 8. check for drafting defects