Material family · PLA
PLA Biodegradable Bags — Compostable Packaging With the Fine Print Included
PLA is the right material when your sustainability claim is compostability, not recycled content — and it is the wrong material if you need high heat resistance or long shelf life. We say that upfront because a failed claim costs more than a film ever will. This page gives you the typical performance envelope, the end-of-life conditions the claim depends on, and the applications where PLA genuinely works.
Technical profile
Technical Profile — Typical Values
| Material family | PLA (polylactic acid), bio-based; PLA/PBAT blends for flexibility |
|---|---|
| Film thickness | 20–50 µm |
| Tensile strength (MD) | 30–50 MPa |
| Stiffness | High — crisper hand-feel than PE |
| Heat-seal window | 80–120 °C (low-temperature sealing) |
| Service temperature | Up to ~50 °C continuous |
| Moisture barrier | Moderate |
| Oxygen barrier | Low to moderate |
| Clarity | Good gloss, semi-clear to clear (better than high-PCR films) |
| Compostability | Industrial composting grades aligned to EN 13432 / ASTM D6400 |
Typical values — customizable to spec. Final parameters are confirmed against your product, filling line and test protocol.
Read before you specify
The Claim Depends on the End-of-Life
"Biodegradable" is only a valid claim under defined conditions. PLA grades aligned to EN 13432 / ASTM D6400 disintegrate in industrial composting facilities (typically 55–60 °C, controlled humidity); they do not break down meaningfully in home compost, soil, landfill or the ocean on any consumer-relevant timescale.
- Check infrastructure in your target market. Industrial composting access varies widely across the UK, EU and North America; a compostable bag in a market without collection can be a worse claim risk than a recycled-content bag.
- Word the pack correctly. "Industrially compostable where facilities exist" survives green-claims scrutiny; "biodegradable" alone often does not.
- Consider the alternative. If your compliance target is recycled content under EU PPWR, our recycled PE or recycled PP with 30–100% PCR (GRS TE-00057717) is usually the more robust claim. We will tell you which route fits your market — even when the answer is not PLA.
Fit check
Where PLA Performs — and Where It Doesn't
Strong fits
- Compostable retail and produce bags — gloss and clarity present well at shelf; see retail bag programmes.
- Short shelf-life dry food — bakery, produce, tea; good stiffness for stand-up formats. See food packaging.
- Brand programmes where the compostability story is central and collection infrastructure exists.
Honest limitations
— Service temperature ceiling ~50 °C — no hot-fill, no summer container-loading without assessment.
— Lower moisture barrier than PE at equal gauge — not for long shelf-life or high-humidity logistics.
— Not compatible with conventional plastic recycling streams; keep PLA out of your rPE/rPP claims.
Evidence
Manufacturing and Compliance Evidence
- Converted and printed within LiHai's integrated plant: 8 printing presses (one 10-colour), slitting 800–1300 mm, sampling 3–5 days
- Company certifications: GRS TE-00057717 · OEKO-TEX SH003 168118 · SMETA ZC5000065444; documentation for REACH and EU/UK packaging rules on request
- MOQ from 500 pcs per design; pricing tiers 5,000 / 20,000 / 100,000 pcs
- Experience supplying UK supermarket programmes and European retail systems (clients under NDA)
Compare the range
Buyer questions
Frequently Asked Questions
We source PLA grades aligned to EN 13432 / ASTM D6400 industrial-compostability requirements and can provide the resin supplier's certification documentation. Finished-bag certification depends on ink coverage and additives — if you need a certified finished article, we scope that testing with you before production.
Usually not, and we will say so. Mailers need puncture resistance, wide seal windows and warehouse-temperature tolerance — rPE outperforms PLA on all three. PLA fits best in shelf-facing retail and short-life food formats where the compostability claim is the point.
MOQ from 500 pcs per design; sampling 3–5 days on standard lines, free of charge. An engineer replies to enquiries within one working day, and the certification package is provided within 24 hours.
Get started
Discuss a Compostable Packaging Spec
MOQ from 500 pcs per design · free sampling on standard lines (3–5 days) · engineer reply within 1 working day.
Certification package (GRS / OEKO-TEX / SMETA) delivered within 24 hours of enquiry.