Tamil Nadu HSE First Year Textile Technology case studies
Tamil Nadu HSE First Year Textile Technology · Put your knowledge to work in context.
Tamil Nadu HSE First Year Textile Technology is the Class 11 vocational elective under the state higher secondary curriculum. It gives students a working grounding in how textile materials are made, converted into yarn and fabric, coloured and finished. The Tamil Nadu HSE First Year Textile Technology case studies are 5 cases and about 3,710 words.
1Cotton lot selection under a regain clause and an immature-fibre constraint
Two cotton lots arrive for a 40s combed hosiery yarn. Lot A contains 120 bales of 170 kg with micronaire 4.6, maturity 0.86 and regain 6.2%.
761 words, about 4 min2Ring-frame end breakage after a roving count change and humidity drop
A ring frame spins 40s Ne carded yarn at 15,500 rpm with 25 TPI, 42 mm rings and 5/0 travellers; it has 1,000 spindles and runs 8-hour shifts. After a roving lot change from 1.2 Ne to 0.9 Ne and a fall in spinning-room RH from 55% to 42%, end breakage rose from 18 to 52 per 1,000 spindle-hours.
758 words, about 4 min3Warp breakage after an over-sized and over-dried beam
A powerloom shed weaves 63-inch reed-space cotton shirting with 40s warp and weft, 110 ends/inch and 56 picks/inch at 220 rpm and 82% efficiency. After a new sizing lot, warp breaks rose from 4 to 14 per 100,000 picks.
695 words, about 3 min4Patchy reactive dyeing caused by hard water and uncontrolled chemical addition
A jet dyeing machine processes 600 kg of cotton interlock at a 1:8 liquor ratio. The recipe uses 4% owf reactive dye, 70 g/L salt and 20 g/L soda ash at 60°C.
772 words, about 4 min5CSP passes but evenness and IPI fail: a sampling and acceptance decision
Buyer specification for a 40s combed yarn is CSP at least 2,400, U% at most 12.0, IPI at most 200 per km and count CV at most 2.5%. The mill tests 20 lea samples drawn from 10 of 60 bales.
724 words, about 4 min