Chain Isolation
Strict chain-of-custody protocols require total physical separation of certified and non-certified fiber streams throughout pulping and papermaking operations. Materials from verified sustainable sources remain physically isolated from unverified inputs at every stage of production. Physical fiber segregation guarantees that output packaging grades contain exclusively verified raw materials.
The requirement stops where mass balance credit allocation methods are applied to mixed stock streams.
Operational Control
Dedicated storage bays, dedicated conveyor systems and isolated pulping circuits prevent cross-contamination during raw material receiving and stock preparation. Mill management schedules dedicated production runs on paper machines, executing complete system flushes between certified and non-certified batches. Physical markers and color-coded bay designations track certified wood chips and market pulp bales from unloading docks to batch digesters.
Contamination Prevention
Third-party auditors inspect inventory tracking tags and cleaning logs to confirm complete physical separation. Accidental mixing of uncertified fiber into certified stock tanks voids the certification status of the entire production batch. Processing plants maintain physical barriers and dedicated air transport lines for secondary fiber handling.
Precise batch tracing ensures full origin verification for high-risk markets demanding absolute supply chain integrity. Strict segregation eliminates claim dilution inherent in volume credit sharing mechanisms. Verification procedures establish accountability before finished reels leave the mill floor.
