Maharashtra HSC NSQF Specialised Sewing Machine Operator case studies
Maharashtra HSC NSQF Specialised Sewing Machine Operator · Put your knowledge to work in context.
The Maharashtra HSC NSQF Specialised Sewing Machine Operator credential is a vocational qualification under the Maharashtra State Board of Secondary and Higher Secondary Education (MSBSHSE). It is designed for Higher Secondary Certificate (HSC) students who want a recognised skill in industrial garment production, particularly in operating specialised sewing machines. The Maharashtra HSC NSQF Specialised Sewing Machine Operator case studies are 5 cases and about 4,912 words.
1Skipped stitches and seam failure after a needle change on a 4-thread overlock
A leggings line runs a 4-thread overlock (2 needles, 2 loopers) at 5,500 stitches/min on 220 gsm cotton/spandex single jersey. Last week the needle was changed from 14/90 to 11/75 because the buyer complained about needle holes at the waist seam.
952 words, about 5 min2Coverstitch/flatlock tension diagnosis on a sleeve hem after a thread lot change
A T-shirt line uses a 3-needle, 5-thread flatlock (coverstitch) to hem 180 gsm 100% cotton single jersey sleeves. Specification: finished hem width 20 mm plus or minus 2 mm, 12 stitches per inch, no grin.
989 words, about 5 min3Final inspection, AQL sampling and a broken needle fragment in a collar
A woven-shirt unit finishes 1,200 pieces of a school-shirt order as one lot. The buyer's standard is ISO 2859-1, General Inspection Level II, AQL 2.5 for major defects, 4.0 for minor defects, and zero acceptance for critical defects.
1,002 words, about 5 min4Line capacity, takt time and an overtime request on a 12-operator shirt line
A shirt unit runs one line of 12 operators on a 480-minute shift. The shift includes a 30-minute lunch break and a 10-minute start-up meeting, leaving 440 productive minutes (26,400 seconds).
983 words, about 5 min5Needle fragment injury on an overlock with the guard removed
In a job-work unit of 40 overlock machines, an operator on a 4-thread overlock running at 6,000 stitches/min was finishing a knit order. The needle guard had been removed six months earlier because it slowed down threading.
986 words, about 5 min