Solid Bleached Sulfate Board Bending Stiffness Evaluation Methods
SBS bending stiffness scales with the third power of caliper and dictates carton bulking resistance, requiring verification via ISO 2493 load-cell testing.
Landed Yield Calculation
Material Efficiency
Fibre mass loss occurring between initial pulping and final conversion defines this metric. Landed yield calculation accounts for moisture evaporation, edge trimming, and finishing rejects to determine the actual weight of saleable substrate remaining from a raw consignment. Precision in this evaluation relies on dry weight measurements taken at the mill gate compared against the tonnage arriving at the converting facility.
Cost Allocation
Supply chain managers utilize landed yield calculation to isolate true procurement expenses from simple invoice prices. Hidden volume reductions during transit often distort base cost metrics, hiding losses that occur during unloading or storage. Accurate data allows procurement teams to adjust unit pricing to reflect the actual amount of usable material per pallet, preventing the overstatement of inventory value.
Corrective adjustments ensure that waste generated during rewinding or sheeting receives proper accounting within the operational budget.
Performance Constraint
Operational tolerances for paper machines dictate the maximum acceptable variance for this value. Production lines functioning with excessive moisture content or poor dimensional stability frequently show lower results during secondary processing. High rejection rates at the converting stage signal that raw stock failed to meet the required specifications for the machine speed or the coating application.
Tight control over these variances provides a reliable forecast for total order fulfillment without additional procurement.