As sustainability becomes a defining factor in global packaging, PLA (Polylactic Acid) has emerged as one of the leading biodegradable materials for food containers, trays, and labels.
However, many companies still ask: How biodegradable is PLA, and which certifications guarantee its compostability and safety?
At Sequoia Enterprise Ltd., we specialize in biodegradable PLA packaging — including trays, salad boxes, clamshells, and labeling films — for brands seeking certified, environmentally compliant solutions.
This article explains the science behind PLA biodegradability and the international certifications that confirm its performance.
1. What Is PLA and How Does It Degrade?
PLA (Polylactic Acid) is a bioplastic derived from renewable resources such as corn starch, sugarcane, or cassava.
It belongs to the family of aliphatic polyesters, similar in structure to traditional plastics but made entirely from plant-based monomers (lactic acid).
How Degradation Works
PLA breaks down through a two-step process:
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Hydrolysis: Moisture and heat break the polymer chains into smaller fragments.
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Microbial Digestion: Bacteria and fungi convert these fragments into CO₂, water, and biomass.
Under industrial composting conditions — around 58 °C, with humidity above 60% and sufficient oxygen — complete biodegradation usually occurs within 60 to 90 days.
This makes PLA one of the few plastics that can truly return to nature without leaving harmful residues or microplastics.
2. The Difference Between “Biodegradable” and “Compostable”
The terms biodegradable and compostable are often confused, but they mean different things in certification standards:
| Term | Definition | PLA’s Status |
|---|---|---|
| Biodegradable | Can be broken down by microorganisms into CO₂, water, and biomass under natural conditions. | ✅ Yes — PLA is biodegradable under specific industrial composting environments. |
| Compostable | Biodegradable + passes tests for disintegration, toxicity, and compost quality (per EN 13432 / ASTM D6400). | ✅ Yes — Certified PLA materials are compostable. |
Key takeaway:
A material may be biodegradable without being compostable, but certified PLA meets both standards — ensuring safe breakdown and no toxic effects on soil or plants.
3. Global Compostability and Food-Safety Certifications
When evaluating any PLA packaging supplier, certifications are the most reliable proof of quality and compliance.
Here are the key international standards that govern biodegradable packaging.
3.1 EN 13432 ( European Standard )
The most recognized EU standard for industrial compostability.
To earn EN 13432 certification, a material must:
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Disintegrate > 90% within 12 weeks in industrial composting.
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Convert > 90% of carbon into CO₂ within 6 months.
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Contain no heavy metals or ecotoxic residues.
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Leave no visible fragments > 2 mm after screening.
Sequoia’s PLA trays, boxes, and films fully comply with EN 13432, making them accepted across all European composting networks.
3.2 ASTM D6400 / BPI Certification ( United States )
In North America, the Biodegradable Products Institute (BPI) verifies materials according to ASTM D6400 criteria.
A BPI logo guarantees the product will biodegrade in commercial composting facilities without releasing toxins.
All Sequoia PLA products are BPI certified, ensuring smooth entry into the U.S. and Canadian markets.
3.3 ISO 17088 ( Global Industrial Standard )
This standard harmonizes global requirements for compostable plastics, referencing both EN 13432 and ASTM D6400.
It is recognized by many countries in Asia-Pacific and South America, simplifying cross-border compliance for exporters.
3.4 FDA & EU 10/2011 Food Contact Approval
For food-grade applications, PLA must pass migration tests that ensure no chemical transfer from packaging to food.
All Sequoia PLA materials are:
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FDA 21 CFR Compliant (for U.S. food contact)
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EU 10/2011 Compliant (for direct food use in Europe)
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SGS-tested for heavy metals and residual monomers
3.5 Other Regional Labels
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OK Compost ( TÜV Austria ) – confirms compostability under EN 13432.
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Seedling Logo – certifies consumer-visible compliance with EU compostability rules.
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China GB/T 19277 – the national standard for biodegradable plastics testing.
4. Environmental Advantages of Certified PLA Materials
Certified PLA packaging offers quantifiable environmental benefits compared to traditional plastics.
| Metric | PLA Packaging | Conventional Plastic (PET / PP) |
|---|---|---|
| Raw Material Source | Renewable plant feedstock | Crude oil / natural gas |
| CO₂ Emissions During Production | Up to 75% lower | High |
| End-of-Life Outcome | Compostable → CO₂ + biomass | Landfill / incineration |
| Toxicity | Non-toxic, BPA-free | May release microplastics |
| Compliance | EN 13432 / BPI / FDA approved | Limited sustainability compliance |
By selecting certified PLA materials, manufacturers not only meet regulatory requirements but also strengthen brand reputation as a sustainable leader.
5. How Sequoia Ensures Reliable Certification and Quality
At Sequoia Enterprise Ltd., we integrate strict testing and documentation into every stage of production.
5.1 Comprehensive Material Testing
Each batch of PLA sheet and tray undergoes:
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Thermal analysis (DSC) for stability and forming temperature.
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Mechanical tests for impact and tensile strength.
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Migration and heavy-metal testing for food safety.
5.2 Third-Party Verification
All compostability claims are verified through independent labs such as SGS and TÜV Austria, ensuring international credibility for our PLA packaging.
5.3 Traceability and Documentation
Clients receive a full set of certificates of analysis (COA) and material safety data sheets (MSDS) for customs clearance and ESG audits.
6. Practical Tips for Using Certified PLA Packaging
To maintain compostability and product performance:
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Avoid mixing PLA with non-biodegradable films or adhesives.
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Use compostable labels and water-based inks.
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Store PLA packaging below 40 °C and away from direct sunlight.
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Dispose via industrial composting facilities where available.
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Educate consumers with clear eco-labels such as “Compostable Packaging.”
These steps ensure that both performance and sustainability goals are met throughout the product lifecycle.
7. Why Certifications Matter for Your Brand
In today’s market, claims like “green,” “eco,” or “biodegradable” are no longer enough — verified certifications build trust.
Retailers and importers increasingly require proof of EN 13432 or BPI compliance before accepting new packaging suppliers.
For brand owners, certified PLA materials deliver:
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Regulatory compliance for exports to EU and U.S. markets.
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Reduced carbon footprint in ESG and CSR reports.
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Enhanced consumer trust through transparent sustainability claims.
8. Why Choose Sequoia Enterprise Ltd.
Sequoia Enterprise Ltd. is a professional manufacturer of biodegradable PLA packaging solutions, serving global food and retail industries.
Our Advantages
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Certified Products: EN 13432, BPI, FDA, EU 10/2011.
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Comprehensive Range: PLA trays, clamshells, salad boxes, cups, films, and labels.
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OEM/ODM Customization: Design and printing tailored to your brand.
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Strict Quality Control: ISO 9001-based production management.
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Sustainability Expertise: Technical guidance for eco compliance and material selection.
Partner with Sequoia to ensure your packaging meets the highest standards of safety, performance, and environmental integrity.
Conclusion
Understanding the biodegradability and certification of PLA packaging is essential for any business committed to sustainability.
Certified PLA materials not only reduce carbon impact but also guarantee trust and compliance across global markets.
At Sequoia Enterprise Ltd., we combine material innovation with international certifications to deliver packaging solutions that are safe, functional, and environmentally responsible.
? Visit www.sequoiaent.com to explore our range of certified PLA packaging materials and learn how your brand can achieve genuine sustainability through verified eco-compliance.
