“100% biodegradable” and “fully compostable” get printed on packaging every day — often by sellers who cannot tell the two apart. For B2B buyers, the confusion is not academic: the wrong claim on your packaging can mean regulatory fines, rejected shipments, or a brand crisis when a customer tests your “compostable” cup and it is still intact six months later. This guide untangles the terms, the certifications, and the verification steps that matter before you place a bulk order.

The Three Terms Buyers Confuse Most

Degradable — the weakest claim. It means the material breaks into smaller pieces over time, with no defined timeframe and no requirement that the fragments are non-toxic. Many conventional plastics with additives are marketed as “degradable.” For food brands, this term carries almost no environmental meaning.

Biodegradable — the material breaks down through the action of microorganisms into natural elements (water, CO2, biomass). Sounds good, but the definition alone says nothing about how long it takes or under what conditions. A product can be technically biodegradable yet take years in a landfill where oxygen and microbes are scarce.

Compostable — the strictest and most useful term. A compostable product must biodegrade within a defined timeframe (typically 90–180 days), under defined conditions, leaving no toxic residue and producing usable compost. This is the only one of the three backed by testable international standards.

Bottom line for buyers: if your marketing will say anything stronger than “plastic-free,” insist on compostable with a named standard — not “biodegradable.”

Certifications That Actually Matter

A compostability claim without a certificate is a marketing sentence. The certificates that carry weight in international trade:

  • EN 13432 (Europe) — the European standard for packaging recoverable through composting and biodegradation. The benchmark most EU buyers require.
  • ASTM D6400 (USA) — the US equivalent for compostable plastics, referenced by the BPI program.
  • BPI (Biodegradable Products Institute) — the North American certification mark for compostable products; widely recognized by US composters and retailers.
  • TÜV AUSTRIA OK compost (Industrial / Home) — distinguishes industrial compostability from home compostability; the “Seedling” logo is the most visible mark on European retail shelves.

When a supplier claims compostability, ask for the certificate number and the certification body — then check it against the body’s public database. Certificates are product-specific: a certificate for a supplier’s PLA cup does not cover their bagasse bowls.

Industrial vs Home Compostable: Choose Wrong and It Never Breaks Down

This is the single most misunderstood distinction in the industry:

  • Industrially compostable — requires sustained temperatures of 55–60°C, controlled humidity, and active microbial cultures. In other words, a commercial composting facility. Most PLA-lined cups fall into this category.
  • Home compostable — breaks down in a backyard compost heap at ambient temperatures. Far fewer food packaging products qualify.

The trap: a buyer orders industrially compostable cups for a market with no commercial composting infrastructure, prints “compostable” on the cup, and the cups end up in landfill behaving like ordinary waste. Before specifying compostable packaging, answer one question first: does my market actually have the composting infrastructure this product needs?

Regulatory Watch-Outs: EU and US

  • EU Single-Use Plastics Directive (SUPD) — bans specific single-use plastic items and, since 2021, has tightened labeling and extended producer responsibility. Note that some “bioplastics” still count as plastics under the directive’s definitions — material marketing names do not override legal definitions.
  • Green claims regulation (EU) — environmental claims must be substantiated; vague terms like “eco-friendly” without evidence are increasingly challenged.
  • US (FTC Green Guides) — currently under review, but the direction is the same: claims like “compostable” need competent, reliable evidence, and marketers should qualify claims when composting facilities are not available to most consumers.

Rules evolve — check the current text for your target market before finalizing packaging copy. Your supplier should be able to tell you which standard their product is certified against; they should not be your legal advisor.

How to Verify a Supplier’s Eco Claims

Use this checklist before you commit:

  1. Ask for the certificate, not the claim. Get the certificate number, the standard (EN 13432, ASTM D6400, etc.), and the certification body.
  2. Check the scope. Confirm the certificate covers the exact product and material you are buying — not a different product from the same factory.
  3. Check validity. Certificates expire. Confirm the certificate is current for your production run.
  4. Ask about the full construction. A “compostable” paper bowl with a non-compostable lid or ink is not a compostable product. Verify lining, lids, and printing inks together.
  5. Match the claim to your market’s infrastructure. Industrial compostable + no local composting facility = a claim you cannot honestly make to your customers.

Common Mistakes Buyers Make

  • Ordering “eco packaging” as a single line item. Eco is not a material — specify the exact construction (e.g., “PLA-lined, EN 13432-certified 12 oz double wall cup”) or you will receive whatever the supplier finds easiest.
  • Copying a competitor’s claim. Their certificate does not cover your product. Verify your own supply chain independently.
  • Approving artwork before certification is confirmed. If the certificate falls through, you reprint everything. Documentation first, print second.
  • Assuming one certificate covers the range. Certifications are product- and material-specific. A certified PLA cup does not make the matching lid certified.

What This Means for Your Packaging Choice

For most foodservice buyers, the practical decision tree is:

  • Selling in the EU with composting infrastructure → certified compostable (EN 13432) options such as PLA-lined cups or make sense.
  • No local composting infrastructure → focus on plastic-free, recyclable, or FSC-certified paper options and avoid compostability claims you cannot stand behind.
  • Making any public claim → certificate in hand before artwork goes to print.

At Leabonpack, our eco range includes PLA cups, bagasse tableware, and paper straws alongside our conventional paper cups, paper bowls, PP containers, and paper bags. OEM orders are accepted with PANTONE color support and printing options including silk screen printing, foil stamping, matte finish, electroplating, and label printing. Lead times: stock items can ship to port within 7 days; bulk custom orders typically take 25–35 days; samples are delivered by air within 3–5 working days. For compostability documentation on specific products, contact us and we will provide what is available for that item — we do not print claims we cannot document.

Frequently Asked Questions

What is the difference between biodegradable and compostable packaging?

Biodegradable means microorganisms can break the material down, with no fixed timeframe or conditions. Compostable is stricter: the product must break down within a defined period (usually 90–180 days) under defined composting conditions, leaving no toxic residue. For B2B purchasing, “compostable” with a named standard (EN 13432, ASTM D6400) is the claim you can verify and defend.

Are PLA cups really compostable?

PLA can be certified compostable — but almost always industrially compostable, meaning it needs a commercial composting facility at 55–60°C. In a landfill or home compost heap, PLA breaks down very slowly. Always ask the supplier for the actual certificate and check your market’s composting infrastructure.

Which compostable packaging certification should I require from a supplier?

For Europe: EN 13432 (often shown via the TÜV AUSTRIA “Seedling” mark). For North America: ASTM D6400 / BPI certification. Get the certificate number and verify it in the certification body’s public database — and confirm it covers the exact product you are buying.

Can I print “100% compostable” on my packaging?

Only if every component is certified compostable — cup, lid, lining, and inks together — and the claim matches a recognized standard. Under EU green-claims rules and the FTC Green Guides, unsubstantiated or overbroad environmental claims carry real regulatory risk.

Does Leabonpack offer certified compostable products?

We offer PLA cups, bagasse tableware, and paper straws in our eco range. Compostability documentation varies by product — contact us for the specific item you are sourcing and we will share what is available. We do not print environmental claims we cannot document.