Food-Grade Aluminium Foil: The Compliance Documents Buyers Should Request

“Food grade” is not a single certificate. This is the paperwork that actually protects you, what each document does and does not prove, and what to check before you file it.

Buyers often ask for “the food grade certificate”. There is no such document. Food-contact compliance is demonstrated by a small set of papers that together show the material is suitable for its intended use, and each one answers a different question. Knowing which is which makes it much harder to be sold a reassuring but empty piece of paper.

What is the declaration of compliance, and what does it cover?

The declaration of compliance is the first paper most buyers request.

Issued by the manufacturer, it names the material, the intended use and the regulation, and must describe your product specifically.

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The core document is the declaration of compliance, sometimes called a declaration of conformity. Issued by the manufacturer, it states which material the declaration covers, the intended conditions of use, and the regulation it is declared against. For the European market that normally means the framework regulation for food contact materials, 1935/2004, together with the specific measure that applies to the layers in question. It must be specific to the product and the conditions of use, not a generic page carrying the company letterhead. Read the scope before you file it. A declaration that names an alloy family and a thickness band which include your order, and conditions of use which cover the temperature and contact time you actually run, is doing its job. A declaration that names a different material or a wider use is not evidence for your product. Ask for the food grade aluminium foil specification to be named on the page you receive, so the paper and the coil can be matched without argument. Remember that it is a statement by the supplier, not a laboratory result about the coil in your warehouse. That is why it belongs in a file with the batch records described below.

What does migration testing actually establish?

Migration testing answers the question the declaration cannot: whether substances can move out of the material into food under your conditions of use.

It reports overall migration, and where relevant specific migration for named substances, against the limits for the intended use and the correct food simulant.

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Compliance is not a property of the alloy alone. What matters is whether substances can migrate out of the material into food under the intended conditions. That is established by migration testing, which reports overall migration and, where relevant, specific migration for named substances, against the limits for the intended use. Pay attention to the test conditions: results for a short contact at ambient temperature say nothing about a long oven contact at high temperature, and a test run on the wrong food simulant does not support your application.

A report is only useful if the temperature, contact time and simulant used resemble the way you will actually fill, seal, freeze, bake or reheat the product. Ask which layer was tested as well. Foil is often part of a structure, with a lacquer, an adhesive or a film between the metal and the food, and the behaviour of the finished structure is not automatically the same as that of a bare strip. Match the tested article to the article you buy; suppliers who follow this field closely, such as the members of European Aluminium, treat the intended use as the starting point for exactly this reason. Read the report beside the batch record it belongs to, and agree the conditions of use in the order, so the result can be matched to them.

Why is a mill test certificate a different document?

A mill test certificate describes the metal itself, and it is a common mistake to offer it as proof of food-contact suitability.

It reports the metallurgical properties of the coil — alloy, temper, mechanical properties and chemical composition — and shows the metal is what you ordered.

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A mill test certificate reports the metallurgical property of the coil: alloy, temper, mechanical properties and chemical composition. It proves the metal is what you ordered. It says nothing about food contact. Both documents are commonly needed, and it is a warning sign when a supplier offers one as a substitute for the other.

Buyers sometimes assume the mill certificate is the stronger paper because it carries numbers. It is the document that lets you check a delivery against the order: whether the alloy is the one you specified, whether the temper suits the forming you plan, and whether the composition matches the chemistry you asked for. None of that tells you what the metal will do when it touches food, which is the question that matters here.

Read the two documents as a pair. The mill certificate ties the coil to your purchase specification; the declaration and the migration work describe the material in contact with food. If one is missing, ask for it rather than accepting the other in its place, and file them under the same batch reference so the two can be found together later. A short note on the difference between foil and sheet explains where the two products diverge.

What does third-party inspection add that the other papers do not?

An inspection report from a recognised body carries the weight of somebody with no commercial stake in the sale having looked at the goods.

It typically covers a defined batch and scope, and shows the product matched the specification at the time of inspection.

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An inspection report from a recognised body, typically covering a defined batch and scope, adds independent evidence that the product matches the specification at the time of inspection. It is valuable, but read the scope: an inspection of a factory system is not a statement that every subsequent coil is compliant, and a report covering one production line does not automatically cover another.

Two things are worth separating. An inspection of a system looks at how a plant organises and controls its work; an inspection of goods looks at the actual rolls in front of the inspector. Both can be useful, and they answer different questions. When a report is put in front of you, the things that decide its value are the date, the quantity inspected, the identity of the batch, and whether the criteria used were yours or a general checklist. Industry bodies such as the Aluminum Association publish material that helps buyers frame those questions. Do not treat a single favourable report as a permanent conclusion, because a report describes a moment and a factory keeps moving. Used properly, inspection is a check on a chain of records rather than a replacement for it, and it is worth asking for by name.

What should you check before filing it, and how do you keep your own file audit-ready?

Before anything goes into the folder, confirm the document names your product, your material and your conditions of use, and carries a date.

Then keep the declaration, the migration report and the mill certificate together for each product and supplier, with the dates visible and the references matching.

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Start with the four checks that catch most problems. Does the document name your material, and not a neighbouring grade? Does it cover the surface that actually touches food? Do the stated conditions of use cover the temperature and contact time you run? Is it dated, and does the reference match the delivery in front of you?

If you supply food businesses, your customers will eventually ask you for this paperwork, and some will audit you. Keep the declaration, the migration report and the mill certificate together for each product and each supplier, with the dates visible. When a specification or a coating changes, ask for an updated declaration rather than assuming the old one still applies.

Give the file a shape that survives staff changes: one folder per product per supplier, one line per delivery, and a note of what was asked for and what came back. Keep the older versions rather than deleting them, because an audit question is often about what was in force at a past date. The retail side of the same discipline is described in our food and household foil range overview, and AlFED is a useful starting point. A record that stays in the office cannot answer a question asked at the container, so ask in the order for the papers to travel with the goods.

What does a batch record actually contain?

A batch record is the supplier's own account of how one production run was made and packed, and it ties a delivery back to a moment in time.

In a practical export dossier it usually pairs the mill certificate for the coil with the dimensional and appearance records taken during packing, plus the packing list for that run.

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Think of the batch record as the bridge between the coil and the container. On one side it names the material: alloy and temper as ordered, the batch or coil reference, and the weight and number of rolls that went into the run. On the other side it describes what was checked before the rolls were sealed: the thickness and width measured in the run, the core diameter, the surface appearance against the agreed description, and the way the material was wound, wrapped and labelled.

What it usually is not is a laboratory document. Most of a batch record is production and packing data recorded by the people who made and checked the goods, which is exactly why it is useful: it tells you what was actually measured rather than what was promised. It should be readable by somebody who was not there, with dates, references and units written out.

Ask for the batch record to travel with the shipping documents, and check that its reference appears on the packing list. Buyers who also repackage should look at our aluminium foil for packaging page, where the same records follow the material into a second life; the general description of the metal on aluminium foil is a useful companion.

Why must the paperwork travel with the roll rather than follow it?

Because a record that arrives after the goods is a record nobody can match to anything, and unmatched paper is what makes a problem slow to trace.

When the papers are in the case, the roll can be identified on arrival; when they follow by email weeks later, the link is only as good as somebody's memory.

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Picture a roll separated from its documents. It looks like every other roll: same alloy, same finish, same wrapping. Nothing on the outside tells a warehouse worker which batch it came from, and if two deliveries from the same supplier stand side by side, the confusion is complete. The paperwork has to travel with the goods because it is the only thing that carries identity; the metal itself is anonymous.

That is why the packing list matters more than buyers expect. It is the document that names what is inside the case, in what quantity and under which reference, and it is read at the moment of arrival by whoever opens the container. A batch record that exists in an office but never reaches the port cannot be used to check a delivery, and it cannot help if a question is raised about a specific roll later. The importer's side of this is covered in our note on how importers verify quality before shipment. Agree, in the order, that the documents travel inside the case and are listed on the outside, so a missing paper shows up on day one rather than on the day a customer asks a question you cannot answer.

How does a buyer read a dimensional or appearance record, and what should be agreed in the order before the material is made?

A dimensional record is read as a set of measurements against the values you agreed, and an appearance record as a description of what the surface should look like.

Before the material is made, settle thickness and width with their tolerances, core diameter, temper, surface, packing and the documents you expect to receive.

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Read a dimensional record as you would any measurement sheet. It should state the nominal value, the limit you agreed and the result for the run, with the units stated rather than assumed. A figure on its own means little; a figure beside the value it is compared with tells you whether the delivery is inside the window you set.

An appearance record is written in words, which makes it harder and more useful. It describes what the surface should be: bright or matte, free of visible stains, with the finish on the correct face. Where the record and the roll disagree, the record is the place to note it, not the loading dock.

Everything above depends on decisions taken before the material is made. Alloys in the usual range, from 1050 and 1100 through 8011, are quoted on request, and the practical ranges are wide: a thickness band of 0.005 to 0.20 mm, a width band of 100 to 1500 mm and a core of 76 or 152 mm cover most enquiries, with a minimum order quantity of 3 MT per size and shipment from Qingdao, Tianjin or Shanghai. Fix the width so that trimming is not wasted, and agree the packing and the documents with the same care.

We supply food-contact foil with the declaration, migration test reports and batch mill certificates, and we will tell you plainly what each document covers. See our food grade aluminium foil or the wider food and household foil range, and tell us your intended use so the paperwork can be matched to it.

Documents protect the buyer as much as the coil does: the material is only as good as the file that travels with it.