TL;DR: The compliance gap that kills adhesive approvals isn’t formulation — it’s missing migration test data, and regulators on both sides of the Atlantic will hold your shipment for it.
TL;DR: Under EU Regulation No 10/2011 and FDA 21 CFR 175.105, adhesive components in food-contact packaging must demonstrate specific migration limits — for most monomers, the threshold is ≤0.01 mg/kg food simulant.
Migration Limits and Substance Lists — The Specification That Actually Governs Approval #
The parameter buyers usually ask about is VOC content. That’s not wrong, but it’s the wrong priority when your packaging is food-adjacent, cosmetic-adjacent, or destined for the EU or US market. The specification that drives approval decisions is specific migration limit (SML) — the maximum concentration of a given substance that may transfer from the adhesive into the product or its contact layer, measured in mg/kg food simulant or mg/6dm² contact surface.
Under EU Regulation No 10/2011 on plastic materials in food contact, the default SML for any listed substance without an assigned value is 60 mg/kg. For substances without any EU positive list authorization, migration must fall below the detection threshold of 0.01 mg/kg — what the regulation calls the “non-intentionally added substances” or NIAS threshold. This is not a labelling rule. It is a market access rule.
On the US side, FDA 21 CFR 175.105 governs adhesives for food-contact use through an “indirect food additive” framework. The regulation specifies permitted substances and use conditions rather than numerical migration thresholds, but the practical effect is similar: if your adhesive contains a component not listed, you need a Food Contact Notification (FCN) or existing regulation coverage before you ship.
China’s GB 9685-2016 operates on a positive list approach similar to the EU, with specific permitted additives and their maximum permitted quantities (Q values) in mg/kg food. For multilayer flexible packaging — our most common format for food-grade lamination — all layers in functional contact with food-simulant conditions must comply, including the adhesive bond layer.
Two standards govern the actual migration testing protocol: EN 1186 for plastics (applicable to laminate structures) and ASTM F1980 for accelerated aging of food packaging. Test conditions vary by end use: aqueous, acidic, fatty, and dry food simulants each have assigned test temperatures and contact times. A 40°C/10-day test simulates ambient storage; a 70°C/2-hour test simulates hot-fill conditions. Specifying the wrong simulant condition is one of the fastest ways to generate a failed test report that doesn’t reflect actual end-use risk.
Supplier Qualification — What to Request and What the Response Tells You #
When we onboard a new adhesive supplier under our QC-11 material authorization procedure, the first document request is not the TDS. It’s the Declaration of Compliance (DoC) against the specific regulation applicable to the end market. A well-constructed DoC cites the regulation by number, names the food contact categories it covers, lists the substances above the 1% w/w threshold with their CAS numbers, and confirms migration compliance through test data or calculation.
Ask your supplier for a DoC and specify: “Please confirm compliance with EU No 10/2011 (or FDA 21 CFR 175.105, or GB 9685-2016 as applicable), identify all intentionally added substances above 0.01% w/w, and provide either migration test data or a written justification based on diffusion modelling.”
The response time and completeness of that reply tells you a great deal. A supplier with a compliant adhesive will return a complete DoC within 3–5 business days. Vague responses like “our product meets all relevant regulations” without document numbers or test data should trigger a follow-up — and if the follow-up yields the same language, treat it as a disqualifying signal.
Also request: Safety Data Sheet (SDS) under REACH Regulation EC 1907/2006 — specifically confirm whether any Substance of Very High Concern (SVHC) on the current SVHC candidate list (updated twice yearly by ECHA) is present above 0.1% w/w. For multilayer structures, the SVHC obligation applies to the article as a whole, not just individual layers. This catches solvent residues and photoinitiators that often appear in UV-cure adhesives.
REACH SVHC disclosure is a separate requirement from food-contact compliance. A substance can be REACH-disclosed but still food-contact compliant (or vice versa). Keep the two compliance streams distinct in your documentation package.
Cost-Performance Trade-offs in Regulatory Compliance Investment #
Full third-party migration testing through an accredited EN ISO/IEC 17025 laboratory costs between €800 and €3,500 per adhesive/substrate combination depending on the number of simulants, test conditions, and analytes. That feels expensive for a component that may represent under 5% of total packaging material cost.
The counterargument for accepting supplier-provided migration calculations rather than commissioning independent tests: for low-risk applications — non-food, non-cosmetic, outer-facing decorative packaging with no product contact — diffusion-model calculations under the EU’s FCM-compliant Migratest software are a defensible substitute. The EU Commission’s own guidance accepts this approach for barrier-functional structures where the functional barrier can be demonstrated to prevent migration.
Where the calculus changes is products going into major EU retail chains (particularly German and Scandinavian buyers) or US mass-market grocery. Retailers in those channels increasingly require independent test certificates, not supplier declarations. Our team has seen purchase orders pulled at 60-day review stage because the DoC was supplier-signed only, with no third-party test report attached. That’s a recoverable situation before production; it is not recoverable after.
The cost differential between a supplier DoC plus commissioning your own test (roughly €1,200–€2,000 all-in for a standard food simulant panel) versus relying entirely on supplier documentation is about one percent of a typical mid-volume packaging run. I’d prioritize independent testing for any adhesive going into retail food, cosmetic, or pharmaceutical packaging — regardless of what the supplier’s DoC says.
Technical Deep-Dive: Building a Compliant Documentation Package Across Three Market Zones #
This is where most OEM packaging projects accumulate risk without realizing it. A brand selling into the EU, the US, and China simultaneously needs three distinct compliance packages, and the document requirements do not map cleanly onto each other.
| Requirement | EU (No 10/2011 + REACH) | US (FDA 21 CFR 175.105) | China (GB 9685-2016) |
|---|---|---|---|
| Positive substance list | Yes — EU positive list required | Yes — 21 CFR permitted substance list | Yes — GB 9685 Annex lists |
| Migration limit format | SML in mg/kg or mg/6dm² | Conditions of use (not numerical SML) | Maximum permitted quantity (Q) in mg/kg |
| NIAS threshold | 0.01 mg/kg (NIAS rule) | No equivalent explicit threshold | Not formally specified — risk-based |
| Declaration format | Written DoC from manufacturer | Letter of guarantee or FCN reference | Compliance statement per GB standard |
| Third-party test required | Not mandated but retail-required | Not mandated; self-GRAS possible | Required for market surveillance |
| SVHC/hazardous substance disclosure | REACH SVHC list (ECHA, biannual) | Prop 65 (CA only, if applicable) | China REACH (MEE regulation) |
| Shelf life of documentation | Update required after formulation change | Update required after reformulation | Valid per lot unless reformulation occurs |
Comparative documentation requirements for adhesives in food-contact packaging across three major export markets.
A few operational notes on that table. The EU column is the most documentation-intensive, and the NIAS rule is the clause that generates the most supplier requests from us. “Unknown” residual substances — reaction byproducts from adhesive curing, solvent traces, oligomers from polymer chains — all fall under NIAS if they’re not positively listed, and the 0.01 mg/kg threshold is genuinely stringent. UV-cure acrylate adhesives in particular generate photoinitiator breakdown products that frequently appear in NIAS reviews.
For the US, the absence of a universal numerical SML does not mean lower burden. It means a different kind of burden: you need to confirm that every component in the adhesive formulation is either (a) listed in 21 CFR 175.105 or another applicable section, (b) covered by a Food Contact Notification, or (c) GRAS (Generally Recognized As Safe) with documented basis. If a component doesn’t fit one of those three categories, it’s not FDA-compliant — regardless of what migration modelling says.
China’s GB 9685-2016 is the newest of the three frameworks and is actively being updated. Our compliance team flagged in our 2024 supplier review that several water-based adhesive formulations that passed the 2016 standard are under review against a proposed revision anticipated for 2025. We’re tracking this through our Category B material monitoring log and will require updated DoCs from affected suppliers upon promulgation.
One open question we haven’t fully resolved: the interaction between functional barrier exemptions in the EU framework and the NIAS rule. When a barrier layer theoretically prevents migration, but third-party testing detects trace NIAS above 0.01 mg/kg, the legal position on who bears the compliance burden — adhesive supplier or laminate converter — is not uniformly settled across EU member states. We treat it as converter responsibility and require test data regardless of barrier claims.
Specification Notes for Brand Partners #
When you brief us on packaging that will use an adhesive layer in direct or indirect food, cosmetic, or pharmaceutical contact, we need three things from you before we can build a compliant material specification: (1) the target market or markets, so we know which regulatory framework applies; (2) the product contact scenario, specifically whether the adhesive bond is on the food-contact side, separated by a functional barrier, or non-contact; and (3) your retail channel, because major EU grocery and pharmacy chains have retailer-specific requirements that go beyond the regulatory floor.
The gap we see most often in client briefs is the assumption that “food safe” is a single standard. A laminate adhesive that complies with FDA 21 CFR 175.105 for the US market may require additional documentation or testing for EU retail compliance — and the two don’t automatically cross-validate. That mismatch, caught late, typically adds 15–20 working days to a sample approval cycle while documentation is re-commissioned.
Our standard sampling timeline for adhesive-laminated structures with full compliance documentation is 18–25 working days from approved material spec. That window extends when third-party migration testing is required — accredited lab turnaround adds 10–15 working days depending on the simulant panel. Starting the compliance documentation in parallel with structural sampling, not after it, is the single scheduling decision that keeps projects on track.
What’s the difference between a Declaration of Compliance and a migration test report — do I need both?
A Declaration of Compliance (DoC) is a supplier’s written statement that the adhesive meets the requirements of a specific regulation. A migration test report is third-party laboratory evidence. For regulatory minimum compliance, a DoC is usually sufficient. For EU major retail channels and most pharmaceutical packaging buyers, an independent migration test report is required — the DoC alone won’t satisfy their supplier audit process. For food packaging going into Lidl, Aldi, or similar European retailer private-label programs, expect to need both.
Our packaging is non-food cosmetic — do EU No 10/2011 food contact rules still apply?
No — EU No 10/2011 applies specifically to food contact materials. Cosmetic packaging in the EU is governed by the EU Cosmetics Regulation EC 1223/2009, which does not set adhesive SML values directly but requires that packaging materials don’t compromise product safety. REACH SVHC disclosure still applies regardless of end-use category. Check whether your specific product makes any “natural” or “organic” claim — third-party certifiers for those claims sometimes impose adhesive restrictions beyond the baseline regulation.
Our adhesive supplier says their product is “FDA approved” — is that enough documentation for US retail?
FDA doesn’t approve adhesive formulations. The correct framing is “complies with 21 CFR 175.105” — and that compliance needs to be substantiated. Ask the supplier to identify which specific paragraphs of 175.105 cover their formulation and whether any components rely on a Food Contact Notification number. A supplier who can’t answer that question with specifics has not done the compliance work.
How often do adhesive DoCs need to be updated?
Any formulation change — even a change in raw material supplier without changing the chemical identity — requires a new DoC under EU No 10/2011. In practice, our QC-11 procedure flags this as a “change control trigger” and we require updated compliance documentation before releasing any modified adhesive grade into production. For stable formulations with no changes, we re-verify DoC currency on an annual basis with our adhesive suppliers.
What is the 0.01 mg/kg NIAS threshold and how does it affect adhesive selection?
Under EU No 10/2011, non-intentionally added substances (NIAS) — reaction byproducts, degradation products, and impurities not deliberately included in the formulation — must migrate below 0.01 mg/kg into food simulant. This threshold is analytically challenging: it requires sensitive detection methods and puts the burden of demonstrating low migration on the converter and supplier, not the regulator. For UV-cure adhesives, this threshold frequently catches photoinitiator breakdown products. It’s one reason our lamination team defaults to solvent-free PUR adhesive for food-contact applications where migration risk is a documented concern — not because PUR is always the right choice, but because its NIAS profile is more predictable than UV-cure acrylates in our test history.
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