Finished Food Package Migration FAQ
Why Should Migration Testing Cover the Finished Food Package?
A buyer guide to component evidence, printing, coatings, adhesives, set-off, cut edges, simulants, conditions and complete-article assessment.
The short answer: converting changes the article that contacts food
Material documents remain essential, but printing, coating, laminating, gluing, stacking and cutting create the finished contact structure and transfer pathways. Migration assessment should represent the exact package and its foreseeable food-use conditions.
Why are raw-material reports not always enough?
They may not cover the final layer sequence, print coverage, adhesive, cure, set-off, seams, cut edges, storage or intended food and temperature. Map each report to the finished article.
What changes when a carton is printed and converted?
Ink and coating are added, blanks contact in stacks, adhesive and seams are introduced, barriers may be interrupted and the product contacts a three-dimensional package rather than a flat sheet.
Does outside printing need migration review?
Yes. Potential pathways include set-off, gas-phase transfer and migration through the substrate. GMP controls and finished-article geometry matter even without intended direct ink contact.
How are test conditions selected?
Use the intended food category, contact time, temperature, repeated-use status and most severe foreseeable conditions within the claim. Applicable legislation determines simulants and test rules.
Should every SKU be tested separately?
A justified grouping or worst-case strategy may be possible when compositions, dimensions, contact area, colours and use are documented. The rationale must be approved by a qualified assessor or laboratory.
What is the role of a functional barrier?
It may reduce migration of specified substances under defined conditions. Its continuity, thickness, substance scope, time and temperature must be demonstrated in the finished structure.
What are NIAS?
Non-intentionally added substances can arise from impurities, reactions, degradation or processing. Their risk assessment is part of complete material safety and cannot be replaced by checking only intentionally added substances.
Does a migration pass cover odour and taste?
Not automatically. EU general safety includes avoiding unacceptable organoleptic change, and sensory evaluation may require separate methods and acceptance criteria.
Does migration testing create a declaration of compliance by itself?
No. A declaration, where required, draws on composition, supplier documents, test or calculation results, GMP, traceability and intended-use restrictions.
What should buyers send to the laboratory or assessor?
Provide bill of materials, layer diagram, suppliers and grades, print and adhesive coverage, dimensions, contact map, food, time, temperature, storage, filling, reheating and target markets.
What should buyers retain?
Retain declarations, supporting documents, specifications, assessments, test reports, sample identity, production traceability, GMP records and change notifications for the defined retention period.
Finished-package migration evidence
Connect component data to the actual converted article.
| Input | Why needed | Buyer record |
|---|---|---|
| Layer construction | Defines barriers and contact paths | Bill of materials and diagram |
| Print and adhesive | Adds substances and set-off routes | Coverage and cure specification |
| Food use | Sets simulant and conditions | Food, time and temperature |
| Worst case | Supports SKU grouping | Written rationale |
| Finished evidence | Confirms supported use | Assessment, report and declaration |
On smaller screens, use the slider or swipe the table horizontally to compare all columns.
Official references and related packaging pages
- review the EU food-contact materials framework regulation
- review EU food-contact GMP requirements
- review the current consolidated EU plastics food-contact regulation
- review current European Commission food-contact materials guidance
- review FDA component-status guidance for US use
- review complete paper food packaging structures
- compare converted bakery box formats
- review cake packaging contact conditions
- compare ink formulation and food-contact claims
- check detailed food-contact and migration guidance
Need help specifying your packaging?
Send the package format, materials, intended use, destination market and required documents. UGI Packging can review the specification before sampling or production.