Standard Reconciliation Protocols for Chain of Custody Documentation
Verify physical receiving weights against transaction certificate balances using standard moisture regain adjustments before authorizing batch production.
ISO 20920
Performance Standard
Standardized mechanical test protocols measure the puncture resistance and structural integrity of coated fabrics under localized perpendicular force. Published by the International Organization for Standardization, iso 20920 defines the laboratory apparatus and testing procedure for determining the puncture force of protective textile materials. The specification governs test specimen preparation and probe geometry across technical textiles.
It does not measure tensile strength or chemical permeability.
Test Methodology
Standardized probe assemblies penetrate clamped fabric specimens at a constant rate until structural failure occurs. Under iso 20920, specimen mounting requires uniform pneumatic clamping pressure to eliminate fabric slippage during testing. The steel probe advances at a fixed speed, recording peak force in newtons at the point of complete material rupture.
Laboratory technicians execute multiple test repetitions across fabric width to capture structural variation in the coating matrix.
Data Calculation
Peak force values recorded during testing generate normalized performance averages for technical product specifications.
Application Scope
Material qualification under this standard applies exclusively to planar fabrics engineered for mechanical impact resistance. When evaluating compliance under iso 20920, results reflect localized resistance to blunt or pointed penetrators under laboratory conditions. The test method fails to predict performance when materials encounter high-velocity ballistic impacts or continuous abrasive friction.
Specifiers must combine puncture values with tear resistance data when selecting fabrics for heavy industrial use.