Cutting defects and bundle accuracy

Learning objectives

• Operationally define cutting defects and bundle-accuracy failures.
• Use MSA and Pareto to find the vital few causes before changing method.
• Design bundle-identity controls that survive urgent recut.

Problem and CTQ

Recut, mismatched components, missed notches, shade mixing, ply slippage and bundle-identity errors disrupt sewing and quality. Define defect and opportunity crisply so the same event is counted the same way by every inspector.

DMAIC path

• Attribute MSA for defect classification and measurement.
• Pareto by table, cutter, fabric, lay height, tool, shift, component and lot.
• Map the numbering, bundling and reconciliation flow end-to-end.

Improvement choices

• Lay-height standards, blade/tool control and first/last ply checks.
• Templates, barcode bundle identity and shade barriers.
• Component counting and poka-yoke on mixed-size operations.

Control plan

• Cutting DHU, recut %, bundle accuracy % and downstream missing-part incidents with owner and trigger.
• Audit compliance and response time for a bundle-identity failure.

Garment-factory example

A shirt line reports 3.1% bundle-accuracy failures. Attribute MSA reveals two inspectors disagree on 'missing back-yoke' vs 'wrong shade barrier'. A single-page defect library and a barcode reconciliation cut the failure to 0.6% within three weeks.

Common mistakes

• Adding a final sort instead of controlling the source.
• Losing traceability during urgent recut.