Meaning
Systematic document and laboratory verification protocols assess whether plastic components meet statutory requirements for food contact, medical use or chemical safety. A declaration of conformity audit checks raw resin supplier dossiers against production records, masterbatch formulations and finished part testing results. The process verifies compliance with specific migration limits, heavy metal caps and authorized substance lists in regulated markets.
This audit coverage stops at the boundary of structural mechanical design and does not validate part geometry or impact strength.
Verification Scope
Regulatory files provided by resin synthesis plants list chemical CAS numbers and maximum allowance thresholds for residual monomers. The declaration of conformity audit cross examines these technical datasheets against internal blending records to catch unauthorized colorant additives or processing aids. Discrepancies between certified virgin formulations and actual floor practices risk total product recalls.
Quality auditors examine certificate of analysis documents for every lot of resin received at the molding facility.
Extractable Testing
Analytical chemistry methods verify whether migrant molecules cross into liquid simulants under high temperature conditions.
Batch Traceability
Production tracking links raw material lot numbers directly to cavity positions, shift logs and final packaging boxes. During a declaration of conformity audit, representatives review purge logs and regrind loading ratios to verify that post industrial scrap levels stayed within approved regulatory boundaries. High regrind usage can introduce unknown degraded oligomers into food contact parts.
Traceable documentation guarantees that every shipment matches the safety declaration attached to the bill of lading.
