Paperboard Food Contact Declarations and Recycled Fiber Traceability
Food contact safety for recycled board requires functional barrier proof and complete chain of custody documentation down to invoice line items.
Harmonized System 4810
Customs Classification
International trade regulation categorizes specific paper products under harmonized system 4810. This classification covers paper and paperboard coated on one or both sides with kaolin or other inorganic substances. It includes base papers produced on a paper machine that undergo subsequent surface treatment to improve printability or optical properties.
The definition excludes paper coated with plastic or other organic binders where the synthetic material exceeds the weight of the mineral filler.
Production Specification
Manufacturing facilities apply this coating to improve surface smoothness and ink holdout for commercial offset or digital printing. High mineral content allows the material to retain sharpness in multi-color reproduction while preventing excessive ink absorption into the cellulose matrix. Engineers adjust the coat weight to control opacity and brightness levels during the secondary production phase.
Differences in binder chemistry dictate the final gloss and matte finish achieved by calender rolls.
Trade Adherence
Verification of this tariff status prevents errors during the movement of substrate across national borders. Importers confirm the chemical composition of the coating layer because excess synthetic polymers force the product into different regulatory chapters. Correct declarations allow tax authorities to calculate duties based on standardized weight and value metrics rather than subjective aesthetic qualities.
Accurate reporting of these technical parameters prevents financial penalties linked to misidentification of industrial stock.