Chinese National Food Contact Plastic Declaration File Inspection Workflow
Chinese food contact plastic declaration files require accredited GB standard migration reports, complete additive SML tracking, and strict lot traceability.
Traceability Lot Matching
Meaning
Quality control record linkage protocol links raw polymer material batch certificates with internal moulding production runs and finished part serial numbers. Operating across injection moulding and extrusion plants, traceability lot matching establishes verifiable history from incoming resin supplier lots through intermediate regrind streams to delivered components. The procedure enables precise scoping of product recalls and root-cause failure analysis when material defects arise in field service.
Boundaries apply to internal manufacturing systems and vendor delivery lots.
Material Tracking
Barcode scanning and enterprise system entries record raw material transfers at every processing stage. Implementing traceability lot matching requires linking supplier certificates of analysis to specific hopper loadings and dryer charges. Untracked resin additions disrupt batch records and prevent accurate correlation of material properties with moulding parameters.
Accurate material tracking prevents mixing incompatible resin grades during high-volume production.
Defect Containment
Defective components identified during production require rapid isolation to prevent contamination of clear inventory. Operating a systematic traceability lot matching system enables quality engineers to isolate parts moulded from a defective resin batch within hours. Precise lot boundaries eliminate the need for broad product quarantines across multiple moulding lines.
Unmatched lot records force manufacturers to scrap entire production shifts when raw material defects are identified.
Recall Scoping
Customer field failures require historical verification of raw material lots used in specific manufacturing dates. Dependable traceability lot matching limits financial liability during product recalls by identifying exact unit serial ranges containing suspect polymer lots.