Biodegradable Bubble Mailers: PLA / PBAT Industrial Composting Certification & Selection
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Direct answer
Biodegradable is not a universal claim that can be used without conditions. Start with the destination market, disposal environment, material and finished construction, then review the relevant standard, certificate scope and logo permission. A resin certificate does not automatically cover a laminated bubble mailer.
Understanding common reference systems
| Reference system | Typical focus | What a buyer should check |
|---|---|---|
| ASTM D6400 | Requirements for plastics or products under industrial composting conditions | Standard edition, tested sample and target market |
| EN 13432 | Requirements for packaging recoverable through composting and biodegradation | Finished construction, certificate holder and validity |
| OK compost INDUSTRIAL | Industrial-composting mark under a third-party certification scheme | Certificate number, product list and permission to use the mark |
| OK compost HOME | Certification scheme related to home-composting conditions | Whether the certificate covers the finished product rather than only a raw material |
Applicable markets, editions and local rules change. Check the current destination-market requirements before printing a claim or shipping the product.
A material name is not finished-product compliance
PLA, PBAT, paper, coatings, adhesives, inks and cushioning layers all affect the finished construction. A report for one resin does not establish that the complete mailer passes the same test. Whether an oxo-additive or another degradation route is acceptable must also be checked against the destination regulation and customer specification rather than assumed globally.
Finished-construction checklist
- Identify the main film, cushioning layer and coating;
- Check whether adhesives, inks, closure strips and labels are within the certificate scope;
- Confirm whether the document covers a resin, intermediate material or finished bubble mailer;
- Determine whether multilayer materials need separation in the intended recovery or composting system.
Five purchasing checks
- Define the destination market, expected disposal environment and intended packaging claim.
- Ask for the complete product construction, not only the resin name.
- Request the original certificate or report and verify the holder, model, standard edition and validity.
- If a certification mark will be printed, confirm logo permission and artwork rules.
- Use samples to check sealing, cushioning, moisture exposure, printing and logistics suitability.
Cost and performance boundaries
Material, thickness, layer count, MOQ, certification and printing affect cost. Do not assume that compostable packaging is always more expensive or that it automatically creates a brand premium; compare quotations, tests and compliance costs for the same specification and quantity.
For a custom project, share the destination market, product dimensions, expected quantity and intended environmental claim so the feasible materials and documents can be reviewed.
