What Is BPA and Why Does It Matter?
Bisphenol A (BPA) is a chemical historically used in epoxy linings inside aluminum cans to prevent corrosion and protect product flavor. Growing scientific evidence linking BPA exposure to endocrine disruption has led regulators worldwide to restrict or ban its use in food-contact applications.
BPA is a chemical historically used in can linings that regulators increasingly restrict. Alucan supplies aluminum cans with certified BPA-free acrylic and polyester coatings and full compliance documentation.
Current Regulatory Status
- United States (FDA): BPA is currently approved for can coatings but subject to ongoing review. Many major brands have proactively switched to BPA-free alternatives.
- European Union: BPA is banned in food contact materials for infants and young children; broader restrictions under review for 2026.
- China (GB Standards): BPA restrictions for baby food packaging; general beverage cans are regulated under GB 9685-2016 migration limits.
- Australia/New Zealand: FSANZ recommends BPA-free packaging for all new product developments.
BPA-Free Coating Alternatives
All of our aluminum cans are available with certified BPA-free internal coatings. We offer two primary options; details are covered in our can coating guide:
- Acrylic-based coatings: Water-based, excellent adhesion, suitable for most beverages including high-acid products.
- Polyester-based coatings: Superior chemical resistance, ideal for high-alcohol beverages and energy drinks.
What to Ask Your Can Supplier
- A written declaration that the internal coating is BPA-free
- Migration test reports compliant with EU 10/2011 or FDA CFR 21 §175.300
- Third-party test reports from accredited labs (SGS, Intertek, or equivalent)
- MSDS (Material Safety Data Sheet) for the coating material
- ISO 9001 and FSSC 22000 certifications confirming food-grade manufacturing controls
You can cross-check these requirements against our aluminum can manufacturing and internal coating guides before placing an order.
How BPA-Free Coatings Are Applied
Alucan applies BPA-free internal coatings using a controlled spray or roller-coating process inside the formed can body. The coating is then cured at precise temperatures to create a continuous protective film. This film prevents direct contact between the beverage and the aluminum substrate, eliminating metallic taste and preventing corrosion.
For BPA-NI (BPA Non-Intent) formulations, the manufacturing process explicitly excludes BPA from raw materials and uses certified supply chains. This provides an additional compliance layer for brands exporting to the EU, UK, and North American retailers with strict non-bisphenol policies.
Migration Testing and Quality Assurance
Quality assurance for BPA-free coatings centers on migration testing. Independent laboratories simulate beverage contact conditions at elevated temperatures and extended time periods, then measure whether any coating components migrate into the food simulant.
| Test Type | Purpose | Typical Standard |
|---|---|---|
| Overall Migration | Measures total substances migrating from coating to food | EU 10/2011 |
| Specific Migration of BPA | Confirms BPA below detection limits | EU 2018/213, FDA guidance |
| Copper Sulfate Porosity | Detects pinholes or coating gaps | Internal QC protocol |
| Sensory Evaluation | Ensures no off-taste or odor transfer | ISO 13299 |
Common Misconceptions About BPA-Free Cans
- Misconception: BPA-free coatings are less durable than epoxy.
Fact: Modern acrylic and polyester coatings provide equivalent or superior barrier performance for most beverages when applied correctly. - Misconception: BPA-free means significantly higher cost.
Fact: While premium formulations exist, BPA-NI and acrylic coatings are increasingly cost-competitive at volume. - Misconception: All "BPA-free" claims are equal.
Fact: Brands should request third-party test reports and supplier declarations to verify the claim.