Nowadays you’d find the word “eco-friendly” printed on almost every other bag you see. Though it may sound assuring, but the word almost carries no legal weight on itself.
“Eco-friendly,” “green,” and “sustainable” are not regulated technical terms. They are mostly marketing language brands use. Industry analysis describes such labels as “heartwarming and hazy,” communicating good intentions without specifying what, exactly, is environmentally better, or by how much (Packaging Strategies, 2025).
The scale of this problem is not small as a 2024 European Commission review found that over 53% of green claims made across products were vague, misleading, or entirely unsubstantiated. Packaging that leans on nature imagery like leaves, earthy colours, recycling arrows can also create an impression of sustainability that the underlying material never earns.
What Most Feed Bags Are Made Of
The overwhelming majority of cattle, poultry, and fish feed bags are woven polypropylene (PP) or BOPP-laminated plastic, chosen for tear resistance, moisture protection, and low cost (Southern Packaging, 2025).
Polypropylene is a petroleum-derived plastic that behaves like any conventional plastic in the environment. It does not compost, and it persists for years. Yet in the same commercial listings where these PP and PP-laminated feed bags are sold, some are marketed with feature tags including “Biodegradable” and “Eco-Friendly” printed directly alongside “Material: PP” (Exporters India, n.d.).
That contradiction, sitting in plain sight on ordinary supplier listings, is exactly the kind of gap researchers mean when they describe packaging claims as unsubstantiated.
Biodegradable, Compostable, Bio-Based Are Not the Same
Part of the confusion is genuine, not just marketing.
“Biodegradable” technically applies to almost everything on Earth, including plastic but the real question is how long it takes to biodegrade. As one industry explainer puts it, wood is biodegradable, but a log cabin can stand for generations.
“Compostable” is a stricter, testable claim. Under the ASTM D6400 standard, a genuinely compostable material must convert at least 90% of its organic carbon into carbon dioxide within 180 days in an industrial composting environment, and leave no toxic residue behind (Bio-Plastobag, 2026).
In India, the Central Pollution Control Board (CPCB) certification is the equivalent non-negotiable benchmark and without a valid CPCB registration number, a compostability claim has no independent backing.
Myth vs. Fact
“If a feed bag says biodegradable, it will break down safely wherever it ends up.”
Not necessarily.
Without third-party certification (CPCB in India, or ASTM D6400/BPI internationally), “biodegradable” is an unverified claim, not a tested outcome and some materials marketed this way are conventional PP plastic that will not compost at all (Bio-Plastobag, 2026; Exporters India, n.d.).
How TerraPHA Approaches This Differently
As India’s first commercial non-GMO biopolymer company, TerraPHA produces non-GMO, PHA-based biopolymers from renewable feedstocks through a controlled bioconversion process, rather than starting with petroleum and adding a green label at the end. Because the material itself is engineered to be biodegradable, the claim is tied to the polymer’s actual chemistry rather than just a marketing trick.
For a category like feed packaging, where millions of bags are used and discarded across different farms every season, that distinction between a labelled claim and an engineered one is the entire point.
The Takeaway
“Eco-friendly” on a feed bag is not proof of anything by itself, instead it is an invitation to ask what the material actually is, and whether that claim has been independently tested. The next time a bag promises to be green, the label to look for is not a leaf icon, but a certification number: CPCB in India, or ASTM D6400/BPI internationally.
Everything else is just ink on plastic.
Frequently Asked Questions
Is “eco-friendly” packaging always a false claim?
No, some packaging genuinely earns the label through certified, tested materials. The issue is that “eco-friendly” itself is not a regulated term, so the same phrase can describe a certified compostable product or an ordinary plastic bag with a green sticker. The claim only means something once it’s backed by third-party certification.
What’s the real difference between biodegradable and compostable?
Biodegradable simply means a material will eventually break down with a timeline that can possibly span months or centuries. Compostable is a specific, testable standard, under ASTM D6400, most of the material’s organic carbon must convert to CO2 within 180 days in a composting environment, with no toxic residue left behind.
How can a buyer verify a genuine sustainability claim?
Ask for the certification, not the claim. In India, that means a valid CPCB registration number; internationally, ASTM D6400 or BPI certification. If a supplier cannot produce a certificate with a registration number, the claim should be treated as unverified.
References
Bio-Plastobag. (2026, April 27). Compostability certifications explained. https://plastobag.in/what-do-cpcb-bpi-tuv-austria-and-iso-17088-actually-mean-a-guide-to-compostability-certifications/
Bioleaderpack. (2026, April 19). Beyond greenwashing: How to build a truly credible sustainable packaging brand. https://www.bioleaderpack.com/beyond-greenwashing-how-to-build-a-truly-credible-sustainable-packaging-brand/
Good Start Packaging. (n.d.). Greenwashing in the food packaging industry: Learn more. https://www.goodstartpackaging.com/greenwashing-in-the-packaging-industry/
MDS Associates. (n.d.). ASTM D6400 compostable standard explained. https://www.mdsassociates.com/astm-d6400-compostable-standard
Packaging Strategies. (2025, May 21). Greenwashing’s red flags: Examining the validity of sustainability claims. https://www.packagingstrategies.com/articles/105675-greenwashings-red-flags-examining-the-validity-of-sustainability-claims
Southern Packaging. (2025, August 19). Woven poly vs. paper bags for animal feed packaging. https://www.southernpackaginglp.com/blog/woven-poly-vs-paper-bags-for-animal-feed
