Direct Answer
A claims review workflow is a gate, not a guideline. Each packaging sustainability claim should move through three roles — requester, evidence owner and approver — and should be blocked until a document exists that a regulator or a retailer could inspect. The evidence file per claim holds four things: the technical basis, the artwork version, the approval date and the review date. Compostable, carbon neutral and recycled content claims carry the highest substantiation load; descriptive or directional language carries the lowest. The workflow fails most often in two places: claims written by design before evidence is collected, and supplier documents used without written authority to restate them. Both are fixed by making the evidence file the gate, not a post-launch tidy-up.
Opening Hook
The most expensive packaging claim is the one that ships before anyone asks for the file. A brand launches a mailer printed "100% recyclable, plastic-free" and within a quarter a retailer's compliance team asks for the basis of the plastic-free line — the laminate contains a thin polymer layer the brand never saw on the spec sheet, and the artwork has already run on four SKUs. The fix is not a better claim; it is a workflow where the claim cannot reach a printer without a file behind it. A five-gate review, owned by three named roles, turns claim substantiation from a scramble into a routine that runs in days. At ecosora, we build that gate into the design handoff so the claim and its evidence travel together.
The Five Gates Every Packaging Claim Passes Through
A gate is a checkpoint with a pass condition. Five gates cover the common cases without turning review into a bottleneck.
| Gate | Question | Pass Condition |
|---|---|---|
| 1. Claim inventory | What is being claimed, in what words? | Exact claim text and its placement listed |
| 2. Technical basis | What document proves it? | Test report, certificate, calculation or declaration on file |
| 3. Scope match | Does the basis cover this SKU and this market? | Basis names the product, material and market |
| 4. Authority to use | May the brand restate the source? | Written permission or licence where the source is third-party |
| 5. Artwork lock | Does the printed copy match the approved wording? | Proof signed against the approved claim text |
The gates exist because substantiation is a chain, and a chain fails at its weakest link. A brand can hold a valid compostability certificate and still misstate the claim by applying it to a SKU the certificate does not cover, or by extending it to a market where the standard has no recognition. Gate 3 catches that. Gate 4 catches the quieter error: naming a supplier's certification on a brand's own packaging without the right to do so.
Data: The U.S. Federal Trade Commission administers truth-in-advertising enforcement and publishes rules on environmental marketing claims that set the substantiation expectation for claims made to consumers.
Judgment: Treat the substantiation standard as the design constraint, not the copy review, because a claim that cannot be supported at the wording stage will not be supportable after the artwork is printed.
Source: U.S. Federal Trade Commission — Truth in Advertising (2025)
Who Owns Which Gate
Ownership is where most workflows quietly die, because unowned gates are skipped gates.
| Role | Owns | Cannot Do |
|---|---|---|
| Brand or category manager | Gate 1 claim inventory | Approve technical basis |
| Packaging engineer or technical lead | Gates 2 and 3 | Sign off marketing copy alone |
| Compliance or legal reviewer | Gate 4 and final approval | Originate claims |
| Design studio / artwork owner | Gate 5 artwork lock | Change claim wording unilaterally |
| Supplier quality contact | Provides source documents | Be the sole approver |
The design studio's role deserves a note, because it is frequently misread as a copy role. A studio that receives a claim at artwork stage is being asked to typeset a legal position it cannot verify. The stronger arrangement is the one we use at ecosora: the claim is written with the evidence file open, and the artwork is locked last, against approved wording. That ordering is the whole point — it puts the studio downstream of the evidence instead of upstream of a problem.
Data: ISO maintains standards for environmental labels and declarations that describe how claims about a product's environmental attributes should be defined, verified and communicated.
Judgment: Align claim wording with a recognised declaration framework before artwork, because a claim structured to a standard is easier to evidence and easier to defend than one written for effect.
Source: International Organization for Standardization — Environmental Labels and Declarations (2024)
The Evidence File Behind Each Claim
One file per claim, four mandatory fields, plus attachments. Short enough to maintain, complete enough to answer a query.
| Field | Example Content | Why It Matters |
|---|---|---|
| Technical basis | Test report, certificate, calculator output | The proof itself |
| Product scope | SKU list, material, thickness where relevant | Prevents scope creep |
| Market scope | Countries where the claim may appear | Standard recognition varies |
| Approval | Approver name and date | Shows a decision was made |
| Artwork version | File reference and proof date | Links copy to approved text |
Two rules keep the file honest. First, the technical basis must name the product; a certificate issued for a family of materials does not automatically cover a finished printed pack, and the gap should be closed by a per-SKU statement. Second, the file carries a review date. Claims age badly — a certification lapses, a supplier changes resin, a market changes its rules — and a dated file makes an expired claim visible before a regulator makes it expensive. Teams building their first file set often start from a sustainability audit checklist for brands, which gives them the document list before they assign owners.
Data: The Biodegradable Products Institute certifies compostable products against recognised compostability standards and maintains a public listing of certified items.
Judgment: Where a compostability claim depends on a third-party certification, keep the certificate reference and expiry in the claim file, and confirm the specific SKU is listed rather than assuming family coverage.
Source: Biodegradable Products Institute — Compostable Product Certification (2025)
Escalation and Kill Criteria
Not every claim needs a committee; some need to be stopped quickly.
| Trigger | Action | Owner |
|---|---|---|
| No technical basis exists | Hold claim, request evidence | Evidence owner |
| Basis covers a different material | Kill or rewrite claim | Compliance |
| Market recognition unclear | Escalate to legal | Compliance |
| Supplier declines to grant use | Rewrite without supplier name | Category manager |
| Certification within 90 days of expiry | Escalate before print | Evidence owner |
| Retailer requests substantiation | Respond from file within 5 working days | Compliance |
Kill criteria matter as much as approvals, because a workflow that only approves is a workflow that never protects anyone. The cleanest kill rule is the first row: no evidence, no claim. If a claim is strategically important and the evidence does not exist yet, the correct path is to commission the test or calculation and hold the wording until it returns — not to launch with a softer version that no one will recognise as the same claim later.
Data: The European Commission's packaging and plastics policy work sets the direction of EU rules on packaging design, recyclability and the substantiation of environmental claims placed on packaging.
Judgment: Build the claim file to a standard that satisfies more than one market, because a claim approved for a domestic launch is routinely reused on export packaging where the substantiation bar is higher.
Source: European Commission — Packaging and Plastics Policy (2025)
Five Workflow Failures Worth Designing Against
| Failure | Symptom | Design Fix |
|---|---|---|
| Copy-first process | Design writes claim, evidence sought later | Require basis before copy sign-off |
| Orphan claims | Claim on artwork, no file owner | One owner per claim, named |
| Scope drift | Basis covers a family, claim covers a SKU | Per-SKU statement required |
| Silent expiry | Certificate lapses, claim stays | Review date in the file |
| Restatement without right | Brand uses a supplier mark | Written permission gate |
None of these require new software. They require an order of operations: inventory, basis, scope, authority, artwork. Once that order is fixed, the review cycle for a routine claim typically compresses to days, and the argument inside the business shifts from whether to claim to whether the evidence is strong enough to claim. The wording side of the same discipline, including how to phrase a claim so it can be evidenced, is covered in our guide to green claims copywriting compliance.
The Bottom Line
A packaging sustainability claim is only as durable as the file behind it, so make the file the gate: inventory the claim, attach the basis, confirm scope and authority, then lock the artwork against approved wording.