Children put toys in their mouths. They suck on them, chew on them, lick colorful surfaces. What may feel strange to adults is completely normal for toddlers. That is exactly why toy coatings are subject to particularly strict safety regulations. The European standard EN 71 defines which substances may migrate out of a coating. And which may not.

For toy manufacturers, compliance with this standard is not optional. It is mandatory. Anyone who wants to sell toys in Europe must prove that their products are safe. Coating plays a central role in that.

EN 71 at a glance

EN 71 is not a single standard, but an entire family of standards. It includes different parts that regulate different safety aspects of toys. For coatings, Part 3 is particularly relevant: the migration of certain elements.

In this context, migration means the release of substances from a material. When a child sucks on a coated toy, substances from the coating can transfer into saliva. EN 71-3 defines the maximum amounts of certain elements that may be released in this way.

Which elements are tested?

The standard defines limit values for 19 different elements. These include well-known heavy metals such as lead, cadmium, and mercury. But less familiar substances such as antimony, barium, or selenium are also covered. Key elements at a glance:

• Lead (Pb). One of the most dangerous elements. It can cause developmental disorders in children. The limit value is therefore very strict.
• Cadmium (Cd). Accumulates in the body and can damage kidneys and bones.
• Chromium (Cr). Chromium(VI) compounds in particular are carcinogenic. Strictly regulated.
• Mercury (Hg). Highly toxic, dangerous even in very small amounts.
• Antimony (Sb). Can cause gastrointestinal issues at higher concentrations.
• Barium (Ba). Soluble barium compounds are toxic.
• Arsenic (As). A classic poison with strictly monitored limit values.

Different limit values for different materials

EN 71-3 distinguishes three material categories. Each category has its own limit values. The reason: different materials are stressed differently. And they release substances at different rates.

• Category I: Dry, brittle, powdery, or pliable materials. This includes chalk, colored pencils, or flaking coatings. Limit values are strictest here because the material can be swallowed easily.
• Category II: Liquid or sticky materials. Finger paints, adhesives, and similar products fall into this category.
• Category III: Scraped-off materials. This refers to coatings on solid substrates. Typical toy coatings fall into this category. Limit values are less strict than in Category I, but still demanding.

For coating toys, Category III is the standard case. The coating layer adheres firmly to the substrate and can only be removed by intensive scraping or scratching.

How the migration test works

The test procedure simulates what happens when a child sucks on a toy. The coating is treated with an acidic solution that imitates gastric fluid. The acid dissolves substances from the coating, which are then measured.

The process in detail: first, a defined amount of material is scraped off. This scraped material is placed in the test solution and incubated for a specified time. The solution is then analyzed. Modern laboratories use ICP-MS or ICP-OES, highly sensitive methods of elemental analysis.

The result is reported in milligrams per kilogram. If the value is below the EN 71-3 limit, the coating is compliant. If it is above, the product may not be sold.

What makes a safe toy coating

An EN 71-compliant coating does not happen by accident. It must be designed from the ground up for this application. That starts with the selection of raw materials. Pigments, binders, and additives are selected specifically for safety. Heavy-metal-based color pigments are not allowed. Instead, organic pigments or safe inorganic alternatives are used. For toy coating, this diligence is essential.

The formulation of the coating also matters. Pigments must be firmly bound into the binder. The better the binding, the lower the migration. A high-quality toy coating releases virtually no harmful substances.

In addition, the coating must adhere well. Loose coatings are a safety risk. If the coating flakes off, children can swallow it. Then the stricter Category I limits apply. Good adhesion is therefore not only a quality issue, but also a safety issue.

Which toys are coated

The range is broad. In principle, all mass small parts from toy production can be coated in the drum process. Typical products include:

• Wooden blocks and wooden toys. The classic. Colorful building blocks, stacking towers, puzzle pieces.
• Plastic figurines. From simple figures to detailed collectibles.
• Beads and threading toys. Small parts, large volumes. Perfect for drum coating.
• Dice and game pieces. Board game accessories in all colors.
• Model-making components. Wheels, axles, connecting elements.
• Letters, numbers, shapes to touch and learn.

We have compiled a complete overview of application areas for mass small-part coating on our website.

Why the drum process is ideal for toys

Toys are produced in large volumes. Individual coating would be far too expensive. Drum coating solves this problem. Parts are processed as bulk material. Thousands of pieces per batch. That is fast and economical.

At the same time, the process is gentle. Parts are not individually gripped or hung. There are no holding points that remain uncoated. Every surface is coated evenly. This is particularly important for toys, because children explore every corner and edge.

• Uniform coating. All surfaces are covered. No uncoated areas.
• Defined coating thickness. Coating thickness can be set precisely. Important for fit in snap connections.
• Reproducible quality. Every batch looks the same. Color consistency across millions of parts.
• High throughput at low unit cost.

Detailed information on contract coating and the capabilities of the SC-Coater® can be found on our website.

The path to EN 71-compliant coating

Anyone who wants toys coated should consider EN 71 from the start. Ideally already during sampling. This ensures that series coating meets all requirements.

The process at Special Coatings: you send us sample parts and describe your requirements. Color. Gloss level. Quantities. And the information that the parts are for toys. We then select a suitable coating system that is proven to be EN 71-compliant.

After sampling, you receive coated parts that you can have tested by an accredited laboratory if needed. Only when everything fits do we start series production. If required, we handle the complete project planning from the first idea to delivery.

We have compiled all details on the sampling process separately.

Safety as the basis for trust

Toy coating to EN 71 is not a bureaucratic burden. It is a promise to parents and children. A promise that the product is safe. That it can be put in the mouth without concern. That quality does not stop at appearance.

At Special Coatings, we take this promise seriously. Our coating systems for the toy industry are developed from the ground up for these requirements. They reliably meet the EN 71-3 limit values. That is not a given. It is the result of decades of experience in coating development.

_____________________________________________________________

Frequently asked questions

What is EN 71-3 and why is it important for toys?

EN 71-3 is a European standard that defines limit values for the migration of certain elements from toy materials. It ensures that toys do not release harmful amounts of heavy metals or other hazardous substances when children suck on them or put them in their mouths.

Which elements are examined in the migration test?

EN 71-3 defines limit values for 19 elements. These include well-known heavy metals such as lead, cadmium, chromium, and mercury, as well as elements such as antimony, arsenic, barium, selenium, and others. Each element has specific maximum values that must not be exceeded.

How does the migration test work?

In the test, a defined amount of coating material is scraped off and placed in an acidic solution that simulates gastric fluid. After a defined incubation time, the solution is analyzed. The measured values are compared with the standard’s limit values.

Are all coatings from Special Coatings EN 71-compliant?

Not automatically. Special Coatings offers different coating systems for different applications. For toys, specially formulated coatings are used that demonstrably meet the EN 71-3 requirements. For inquiries, it should always be stated that the application is for toys.

Which toys can be coated in the drum process?

In principle, all mass small parts that can be processed as bulk material. Typical examples are wooden blocks, figurines, beads, dice, game pieces, and educational toys. Suitability is verified during sampling.

How do I ensure that my toy complies with EN 71?

The safest route is sampling followed by laboratory testing. Special Coatings uses only coating systems for toys that have been developed for EN 71 compliance. You can additionally have the finished samples tested by an accredited test laboratory.