Quality & inspection
AQL Inspection
How do you calculate the AQL sample size for a garment shipment?
AQL inspection · acceptance sampling · inspection level · accept and reject numbers · garment final inspection
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Apparel quality, industrial engineering, production planning and fabric efficiency.
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Industrial engineering
Time Study and Standard Minute Value
How is SMV calculated from a sewing time study?
time study · standard minute value (SMV) · SAM calculation · performance rating · allowances · garment work measurement
Read lessonIndustrial engineering
Line Balancing
How do you calculate takt time for a sewing line?
sewing line balancing · takt time · bottleneck operation · line efficiency · balance loss · operator allocation
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Statistical Process Control and Control Charts
Which control chart should be used for garment measurement data?
statistical process control (SPC) · control charts · X-bar and R chart · p chart · out-of-control rules · apparel quality data
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Sewing Defects and Root Causes
What causes skipped stitches in an industrial sewing machine?
sewing defects · root cause analysis · skipped stitches · seam puckering · DHU calculation · defect Pareto
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Process Capability
How do you calculate Cp and Cpk for a garment measurement?
process capability · Cp and Cpk · Ppk · specification limits · capability study · garment measurement tolerance
Read lessonCutting & fabric
Marker Utilisation
How is marker efficiency calculated in the cutting room?
marker utilisation · marker efficiency · fabric consumption per garment · marker planning · cutting room fabric saving · end loss and splicing
Read lessonProduction planning
Capacity Planning
How do you calculate available minutes for a sewing line?
garment capacity planning · available minutes · machine and manpower capacity · booked vs available capacity · capacity cushion · order loading
Read lessonIndustrial engineering
Operation Bulletin Development
How do you prepare an operation bulletin for a garment style?
operation bulletin (OB) · operation breakdown · SMV per operation · manpower and machine requirement · target output per operation · sewing line layout sequence
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Measurement Audit
How do you measure a garment against the buyer's spec?
measurement audit · points of measure (POM) · spec tolerance · out-of-tolerance decision · shrinkage allowance · garment spec conformance
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Inline and End-Line Inspection
What is the difference between inline and end-line inspection?
inline inspection · end-line inspection · traffic light system · DHU · right first time · red tag rework flow
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Corrective and Preventive Action
What is the difference between corrective and preventive action?
corrective and preventive action (CAPA) · root cause analysis · containment action · 5 why analysis · effectiveness verification · CAPA closure
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Measurement-System Analysis
What is Gauge R&R and how is it calculated?
measurement system analysis (MSA) · Gauge R&R · bias and repeatability · reproducibility · attribute agreement analysis · measurement error
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Defect Classification and Inspector Calibration
What counts as a critical, major and minor garment defect?
defect classification · critical major minor defects · inspector calibration · defect catalogue · boundary samples · inspector agreement
Read lessonCutting & fabric
Fabric Defects and Inspection
How does the 4-point fabric inspection system work?
fabric inspection · 4-point system · points per 100 square yards · fabric defect types · roll acceptance · shade banding
Read lessonCutting & fabric
Cut Order Planning
How do you plan a cut order from a size and colour breakdown?
cut order planning · lay planning · size ratio · marker combinations · ply height · cutting room efficiency
Read lessonProduction planning
Consumption and Cost Control
How do you calculate fabric consumption for a knit T-shirt?
fabric consumption · cost sheet · GSM based consumption · wastage allowance · costing variance · material cost control
Read lessonProduction planning
Critical Path and Time-and-Action Management
How do you build a time and action calendar backwards from the ship date?
time and action calendar (TNA) · critical path · lead time planning · float and slack · approval milestones · ship date planning
Read lessonIndustrial engineering
Stitch and Seam Science
What is the difference between lockstitch and chainstitch?
stitch types · seam types · stitch density SPI · lockstitch and chainstitch · seam strength · seam allowance
Read lessonIndustrial engineering
Needle and Thread Selection
Which needle size should be used for a given fabric weight?
sewing needle size · Nm and Singer needle numbering · needle point style · thread ticket number and Tex · thread consumption · needle heat damage
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