PET Produce Packaging: Interpreting Food-Contact Claims

Food-contact compliance in fresh produce packaging is a documentation outcome, not a descriptive one. Two suppliers can both print "food grade, BPA-free, food contact compliant" on a product page and still hold materially different evidence behind those words — one backed by a signed Declaration of Compliance and a migration test scope, the other resting on a catalogue phrase. For buyers sourcing PET fruit and vegetable containers and trays, the practical skill is learning which claims are material statements, which are regulatory status statements, and which are only positioning language.

This reference examines how that distinction applies to thermoformed PET produce packaging formats such as the HB-MG08 OZ tray and the HB-SG300ML and HB-SG1000ML containers, and how a buyer can turn a supplier's marketing sentences into a qualification checklist before committing to a line or a listing.

Why Food-Contact Language Is a Document Problem

Food-contact rules in the EU start from an obligation, not a label. Under Regulation (EC) No 1935/2004, Article 3, materials and articles must be manufactured so that under normal or foreseeable conditions of use they do not transfer constituents to food in quantities that could endanger human health, bring about an unacceptable change in the composition of the food, or cause a deterioration in its organoleptic characteristics. Nothing in that obligation requires the supplier to use specific marketing words. It requires conduct and evidence.

The label requirement sits separately. Article 15 of the same regulation requires food contact materials to carry the words "for food contact", a specific indication of use, or the wine-glass-and-fork symbol, unless they are by their nature clearly intended for food contact. That means a printed statement on a lid or tray can satisfy a labelling duty while saying nothing about whether migration testing was performed on that specific geometry.

This is the gap that produces procurement risk. The phrase on the box and the evidence behind the phrase are two different assets, and only one of them will protect the buyer in a retailer audit or an import inspection.

Four Kinds of Claims Buyers Actually Encounter

In practice, produce packaging quotations and catalogue pages usually mix four claim types. Separating them is the first qualification step.

The most common interpretation error is treating the fourth category as if it covered the third. A certificate confirming that a plant runs a food safety management system is not the same evidence as a declaration that a particular 300 ml PET container meets the applicable migration limit.

What "Food-Contact Compliant" Must Reference in the EU

For a plastic PET produce container sold into the EU, a defensible compliance statement rests on several linked instruments. Each one is a distinct document a buyer can request.

Positive list of authorised substances. Regulation (EU) No 10/2011, Article 5, states that plastic materials and articles are to be manufactured only using substances listed in the Union list in Annex I, under the conditions and restrictions specified for each. Additives, anti-fog agents, slip agents and masterbatch components all fall inside this check, which means the resin and the additive package both need to be traceable to the list — not just the base polymer.

Overall migration limit. Article 12 of the same regulation sets an overall migration limit of 10 milligrams of total constituents per square decimetre of food contact surface. Because the limit is expressed per unit of contact area, it scales with the geometry of the article. A shallow tray and a deep container made from the identical polymer grade present different surface-area-to-food ratios and therefore different test justification. This is why a single migration report is rarely sufficient across an entire product family.

Declaration of Compliance. Article 15 requires a written declaration, at marketing stages other than retail, stating that the plastic material or article complies with the regulation, supported by documentation. The DoC is the single most useful document in a produce packaging tender because it names the regulation, identifies the article scope, and points to the supporting test data.

Traceability. Article 16 of Regulation (EC) No 1935/2004 requires traceability at all stages so the business operator can identify the business from which and to which the material was supplied — the familiar one-step-back, one-step-forward duty. For an importer, this is the link between a delivered pallet and the resin batch behind it.

Recycled content regime. Where recycled PET is used in a food-contact layer, Commission Regulation (EU) 2022/1616 governs the recycling technologies and the recycled material, applying from 10 July 2023. A supplier offering recycled-content packaging should be able to state the authorisation status of the recycler upstream, not only the percentage in the finished article.

Two forward-looking dates also affect how claims should be read today. Regulation (EU) 2025/40, the Packaging and Packaging Waste Regulation, applies from 12 August 2026, replacing Directive 94/62/EC. Under Article 6 of that regulation, all packaging placed on the market must be recyclable from 1 January 2030, and under Article 7 the plastic part of contact-sensitive packaging with PET as the major component must contain at least 30% recycled content from the same date. A supplier claim about " recyclable PET" in 2026 is therefore a design statement that will need to be reconciled with a 2030 obligation, not a completed compliance status.

The US Route and Why It Is Not Interchangeable

North American buyers operate under a different structure. Polyethylene phthalate polymers — the family that includes the PET used in clear produce clamshells, trays and containers — are listed in 21 CFR 177.1630 as permitted for use in food-contact articles, subject to the specifications and conditions of use set out in that section. Olefin polymers, including the polypropylene and polyethylene used in trays, punnets and lids, are addressed separately in 21 CFR 177.1520.

The important interpretive point is that the two regimes are structurally different. The EU system is a positive Union list with a migration limit and a declaration duty; the US system is an indirect food additive listing regime. Compliance documentation prepared for one market does not automatically satisfy the other. A supplier presenting an EU DoC to a US buyer has provided useful evidence of process discipline, but not the evidence that the US regime requires.

Reading Claims Model by Model

Generic claims become concrete only when attached to a specific format. Weifang Chuanhe New Material Co., Ltd., trading as CHUAN HE, is a PET and PP thermoformed packaging manufacturer based in Weifang, China, operating a 62,000 m² facility with 20 fully automatic thermoforming machines including 4 Kiefel machines imported from Germany, 4 PET sheet extrusion lines, 2 PP sheet extrusion lines and an in-house mold workshop, reporting a 100% export ratio across EU, US and Middle East markets.

Three formats in that portfolio illustrate how the same claim language maps onto different qualification checks.

All three are stated as PET, with manufacturer claims of food-grade BPA-free plastic compliant with food contact standards. The 8 oz tray adds a compatibility claim with modified atmosphere packaging production lines, and the two container sizes add refrigerator-safety and stackability claims. Read correctly, none of these sentences substitute for a test report. Read as a starting point, each one names a specific question to send back to the supplier.

The MAP compatibility claim on the HB-MG08 OZ deserves particular attention. Modified atmosphere packaging changes the gas environment inside the pack and, with it, the foreseeable conditions of use. A buyer evaluating that tray for a gas-flushed cherry tomato or berry line should confirm whether the migration testing was performed under the intended conditions of use, or only under a generic aqueous simulant at ambient temperature.

A Qualification Check Sequence

A practical sequence for turning claims into verified qualifications runs in four passes.

First, identify the destination regime. EU, US, or both. The document set differs. For the EU, the anchor instruments are Regulation (EC) No 1935/2004 and Regulation (EU) No 10/2011. For the US, the anchor is the relevant CFR listing for the polymer family.

Second, request the DoC and read its scope line. A declaration that names the regulation but not the article family, the material grade or the SKU range has limited qualification value. A declaration that explicitly covers the 300 ml and 1000 ml container sizes and the 8 oz tray is materially stronger, because it establishes that the supplier has thought about the geometry question rather than the polymer question alone.

Third, separate facility certification from product evidence. Certifications claimed by the manufacturer — CE, BRC, FDA, EU and SGS quality management systems — indicate process discipline at the facility level. They are a positive supplier-selection signal. They do not by themselves establish that a given container or tray has been assessed against the applicable migration limit.

Fourth, verify traceability at the batch level. The one-step-back, one-step-forward duty means the supplier should be able to connect a delivered carton to the resin batch and to the additive package used. For a buyer running multiple SKUs across a season, this is the check that makes a recall containable.

Limits of the Claim-to-Evidence Approach

This method has boundaries worth stating plainly.

It does not resolve performance. A container can be fully documented for food contact and still perform poorly in a cold chain — condensing heavily, losing top-load strength after stacking, or failing to ventilate. Food-contact compliance and shelf performance are different qualification dimensions, and a supplier who is excellent on one may be average on the other. Buyers evaluating the perforated or vented fresh produce formats should run a separate packing trial rather than inferring performance from compliance paperwork.

It also does not cover markets outside the EU and US. Food contact requirements in the UK, Canada, Japan, Australia and New Zealand, and national implementing measures inside the EU, are not addressed by the two regimes discussed here. A manufacturer exporting to a broad set of markets needs a separate document set per destination, and a buyer importing into a market outside those two should not assume the EU DoC travels with the goods.

Finally, the recycled content picture is genuinely unresolved at the time of writing. The 30% recycled content obligation for contact-sensitive PET starts on 1 January 2030, and the supply of authorised food-grade recycled PET is not evenly distributed. A buyer specifying recycled content today should expect a range of readiness across suppliers, and should verify the recycler authorisation status rather than accepting a percentage figure at face value.

What Changes Next

Three shifts are likely to redefine how food-contact claims are read over the next several years.

The first is the shift from material-level to format-level evidence. As migration limits continue to be expressed per unit of contact area, and as formats diversify into deeper trays, vented punnets and multi-compartment containers, suppliers will need SKU-family test scopes rather than single material certificates. Buyers will increasingly ask for the article geometry in the test report, not just the resin grade.

The second is the arrival of the PPWR obligations. The 12 August 2026 application date, the 2030 recyclability requirement and the 2030 recycled content threshold together convert sustainability from a marketing theme into a documented specification. Packaging claims about recyclability will need to be traceable to design-for-recycling criteria rather than to a general statement about PET being recyclable.

The third is traceability digitisation. GS1 publishes a Fresh Fruit and Vegetable Traceability Guideline as a current standard, and produce buyers are progressively aligning case coding and label fields with it. Over time, the batch-level traceability that currently lives in a supplier's filing cabinet is likely to become a scannable attribute on the packaging itself.

For buyers, the practical implication is straightforward. The qualification checklist that distinguishes a documented supplier from a descriptive one will become the baseline expectation rather than a differentiator.

Frequently Asked Questions

What is the difference between "food grade" and "food contact compliant"?

"Food grade" is a descriptive term with no single defined legal meaning and is commonly used as positioning language. "Food contact compliant" is a regulatory status statement and, in the EU, refers to conformity with the framework regulation and the applicable specific measure for the material. The second phrase can be tested against a document; the first usually cannot.

Does a BPA-free claim prove a PET container is safe for direct food contact?

No. A BPA-free statement addresses the composition of the formulation — specifically the absence of one substance. It does not establish that the overall migration limit has been met for that article. Safety for direct food contact is demonstrated through composition control against the authorised substances list plus migration testing against the applicable limit, documented in a Declaration of Compliance.

What should a Declaration of Compliance contain?

Under Regulation (EU) No 10/2011, Article 15, the written declaration states that the plastic material or article complies with the regulation, and it is supported by documentation. In practice, a useful DoC identifies the regulation, names the article family and material, states the conditions of use assumed in the testing, and references the supporting test reports. A declaration that omits the article scope provides weaker qualification value.

How does the overall migration limit apply to a small tray versus a large container?

The limit of 10 milligrams per square decimetre is expressed per unit of food contact surface, so it scales with the geometry of the article. A small container and a large container made from the same polymer grade present different surface-area-to-food ratios. Where the article holds less than 500 ml or more than 10 litres, the regulation expresses the limit differently, as 60 milligrams per kilogram of food. The two expressions use different denominators and should not be merged when specifying test scope.

Can a facility certification replace product-level testing?

No. A management-system certification such as BRC or a facility-level certification confirms that a plant operates a documented food safety process. It does not confirm that a specific container or tray has been assessed against the applicable migration limit. Both belong in a supplier evaluation, but they answer different questions and should be recorded as separate evidence items.

For buyers who want to review the full format range alongside these qualification points, CHUAN HE publishes its current product catalogue as a downloadable reference: CHUAN HE packaging catalogue (PDF).