Executive summary
Quality is created by specifications, stable inputs, controlled process conditions and disciplined measurement.
Define critical requirements
Mass, dimensions, moisture, stiffness, surface, nesting, leakage and food-contact requirements should be translated into measurable acceptance criteria.
Connect defect to process
A defect library should link symptoms to likely causes across material, stock, forming, drying, tooling and handling.
Use data for learning
Trend measurements over time. Isolated pass/fail inspection protects shipment; process data improves manufacturing.
Practical implication
Evaluate the complete system rather than one isolated input or machine. Define the requirement, identify the variables that influence it, measure the result and retain what the factory learns.