EU Green Claims Directive: Substantiating a Compostable Paper Straw Claim

Importers and food-service brands now often ask suppliers for Green Claims Directive compliant compostable straws. In a sourcing email, that phrase sounds practical. Legally, it is too loose. As checked on 7 July 2026, the EU Green Claims Directive proposal is still listed by EUR-Lex procedure 2023/0085/COD as ongoing, not as an enacted directive. The European Commission still describes it as a proposed new law on its green claims page.

That does not mean buyers can relax. The risk has simply shifted to rules that are already binding or close to application. The key legal reference is Directive (EU) 2024/825, often called the Empowering Consumers for the Green Transition directive or ECGT. It amends the Unfair Commercial Practices Directive 2005/29/EC and requires Member States to apply national measures from 27 September 2026. For a straw importer, the real question is not whether the GCD is already in force. It is whether a compostable claim can be proven before the product is placed on the market.

Is the EU Green Claims Directive Actually Law?

What the GCD proposed, and why the status matters

The Green Claims Directive proposal, COM(2023) 166, was designed to regulate explicit environmental claims before they reach consumers. It would have required companies to substantiate claims with recognised scientific evidence and, in many cases, obtain verification before communicating those claims. This is why procurement teams still use GCD compliant as shorthand for a stronger evidence file.

The shorthand is understandable, but it can create compliance confusion. EUR-Lex lists the file as Procedure 2023/0085/COD and ongoing. A buyer should not treat the GCD as in force, withdrawn as a legal fact, or directly enforceable against a straw shipment. The narrower and safer position is this: the GCD has stalled politically, its final form is uncertain, and it is not the live legal basis for a 2026 import decision.

The rule that is binding: Directive (EU) 2024/825

Directive (EU) 2024/825 is the live pivot. The EUR-Lex text for Directive 2024/825 amends EU consumer law to target misleading environmental and social claims. It puts pressure on generic terms such as environmentally friendly, biodegradable and compostable when the trader cannot demonstrate the environmental performance relevant to the claim.

For B2B buyers, this changes the supplier conversation. A product description saying compostable paper straw is not enough. The buyer needs the test report, the certification basis, the composting environment, and the exact product scope covered by the evidence. In practical procurement terms, plan around ECGT 2024/825, PPWR 2025/40 and food-contact/PFAS rules, not around a future GCD text that may still change.

What Substantiating a Compostable Claim Requires

A defensible compostable claim does not travel with an adjective. It travels with documents. The file normally needs a recognised test report, a valid certificate or equivalent evidence, a stated composting route, and product-level coverage. If the claim is industrially compostable, say industrial. If it is home compostable, show the separate evidence for home-composting conditions.

This matters because enforcement is often document-led. A brand may place packaging or food-service items on the market, then be asked later to prove the claim. If the evidence only covers the base paper, the coating resin, or a supplier sample rather than the whole finished straw, the claim can fail even when the material story sounds plausible.

EN 13432 Decoded: The Thresholds Behind the Claim

EN 13432 is the core European reference for packaging recoverable through composting and biodegradation. It is not a marketing badge. It is a pass/fail framework.

The commonly cited thresholds are specific. The material must reach at least 90% biodegradation within 180 days under controlled composting conditions. It must disintegrate within 12 weeks so that no more than 10% of the original dry mass remains on a 2 mm sieve. It must meet heavy-metal limits and show no negative effect on compost quality or plant growth. These are industrial composting conditions, not a promise that the item disappears in a backyard pile, ocean, landfill or roadside environment.

The difficult part for paper straws is the whole-product rule. A straw is not only paper. It may include coatings, wet-strength additives, adhesives, inks, colourants or surface treatments. If one component is not compostable, the finished straw may not be defensibly described as compostable. A buyer should therefore ask whether the certificate covers the whole finished straw and the exact construction being ordered.

Certificate housekeeping also matters. Buyers should check the certificate holder, product name, material description, thickness or grammage limits, issuing body, validity period and standard referenced. EN 14995, ISO 18606, ISO 17088, ASTM D6400, ASTM D6868 and AS 4736 may be relevant in other markets or for related materials, but they are not interchangeable without understanding the claim, market and disposal route.

Home vs Industrial Composting: The Claim That Gets Brands Into Trouble

Industrial compostability and home compostability are different claims. EN 13432 and marks such as Seedling or OK compost INDUSTRIAL relate to controlled industrial composting. OK compost HOME is a separate scheme intended for lower-temperature, less controlled home-composting conditions. One certificate does not automatically prove both.

The distinction becomes important when packaging copy reaches consumers. UK advertising cases reported by Packaging Europe, including OceanSaver, Lavazza and Dualit examples, show how regulators scrutinise whether consumers are likely to understand the disposal conditions. In one reported case, a home-compostable implication was challenged where the evidence related to industrial compostability. The UK DMCC Act 2024 also raises the penalty stakes, with possible fines of up to 10% of global turnover for serious consumer-law breaches.

For an EU straw buyer, the safer procurement wording is specific: industrially compostable under EN 13432, subject to availability of industrial composting infrastructure, or home compostable under the named home-compost scheme if that separate evidence exists. Avoid saying simply compostable unless the disposal environment is clear.

The Proof File Every Importer Should Demand

A buyer importing paper straws into the EU should request the evidence file before market placement, not after a customer asks. The minimum file should include the EN 13432 test report or certification basis, a valid certificate where available, and a clear statement of industrial or home compostability.

Second, require whole-straw coverage. The documents should cover the finished straw, including coatings, adhesives, inks and treatments. If the supplier only provides a paper mill certificate, that is not the same as a finished-product claim.

Third, separate compostability from food-contact and chemical compliance. Compostability does not prove food-contact safety. It also does not prove PFAS-free status. Buyers should ask for food-contact documentation and PFAS-related test reports or declarations where relevant to the market and customer specification.

Fourth, keep version control. The document file should match the product ordered: diameter, length, paper grade, coating system, ink, batch or formulation family. If a supplier changes a coating or adhesive, the claim may need re-checking.

For tw0909, the owned offering boundary is specific: Taiwan Wang Lai Biotech is positioned around paper straw machines and compostable straws for export buyers, with adhesive-free and PFAS-free one-piece paper straw positioning in brand documentation. That supports a practical procurement conversation about production lines and order-level documentation. It does not, by itself, assert that every tw0909 straw SKU carries EN 13432, Seedling, TÜV Austria or home-compost certification. Certification status should be verified per order.

Beyond Compostability: PFAS, Food Contact and PPWR

Paper straws exist partly because the Single-Use Plastics Directive, Directive (EU) 2019/904, restricts placing certain single-use plastic products on the market, including plastic straws listed in the directive annex. The SUP Directive text also defines plastic with reference to polymers, while Commission guidance discusses how unmodified natural polymers are treated.

But replacing plastic with paper does not end the compliance review. Food-contact safety remains separate. The BEUC food-contact-materials report cited in the research found chemicals of concern in sampled paper straws and cups, including 53% of samples with at least one chemical of concern above recommended levels and 21% near limits. Those figures should be treated as source-specific sample findings, not as a universal market average, but they explain why buyers increasingly request PFAS and food-contact evidence.

PPWR adds another layer. Regulation (EU) 2025/40, available through EUR-Lex, entered into force in 2025 and generally applies from 12 August 2026. It restricts PFAS in food-contact packaging using concentration thresholds, including 25 ppb for any individual PFAS (targeted analysis), 250 ppb for the sum of targeted PFAS and 50 ppm for total PFAS. PPWR Article 9 also requires certain formats, such as tea bags, coffee system single-serve units and fruit or vegetable stickers, to be industrially compostable from 12 February 2028. Straws are not listed in that mandatory compostability category, so a straw claim still needs to stand on its own evidence rather than on PPWR automatically requiring compostability.

Practical Checklist for a Compliant Compostable Straw Claim

Use this checklist before approving packaging copy, product listings or tender language.

1. Name the composting route: industrial, home, or no compostable claim.
2. Require whole-product EN 13432 or equivalent evidence for the finished straw.
3. Confirm that coatings, adhesives, inks and treatments are included in the evidence scope.
4. Keep PFAS and food-contact documents in a separate compliance folder.
5. Check certificate validity, holder, product name and formulation limits.
6. Match the documents to the exact SKU, order specification and batch family.
7. Obtain the documents before import or market placement.
8. Do not conflate compostable, biodegradable, recyclable, plastic-free, PFAS-free and home compostable.
9. Track ECGT application from 27 September 2026 and PPWR application from 12 August 2026.
10. Update claims when product construction or supplier inputs change.

The most common misconception is that paper automatically means compostable. It does not. Another is that biodegradable is a weaker but acceptable substitute. Under modern green-claims scrutiny, a vague biodegradable statement can be riskier than a precise industrial-compostability claim because the time, environment and evidence are unclear.

Lời kêu gọi hành động dành cho người mua

Sourcing compostable paper straws for the EU market, or evaluating a paper straw production line for export customers? Talk to tw0909 about paper straw machines and compostable straws built around a documented, defensible procurement file. For each order, verify the certification and compliance documents that match the exact product specification before making public environmental claims.