BPI Certified Compostable Resin — Torise

For film converters and packaging manufacturers supplying the US market: In North America, BPI certification is the working compliance baseline for compostable packaging.

Major retailers, US state procurement programs (California, Washington, Oregon), and commercial composting facilities use the BPI mark as their acceptance filter — without it, products are typically rejected regardless of biobased content claims.

Torise holds BPI resin certification for our compostable resin grades (Natural, Red, Yellow, White, Black, Green), tested against ASTM D6400 — the US standard for plastics designed to compost in municipal and industrial composting facilities.

Why ASTM D6400 — and What It Requires

ASTM D6400 requires that materials achieve at least 90% biodegradation (conversion to CO₂) within 180 days under industrial composting conditions, with no ecotoxicity in the resulting compost. Each product is certified only up to the tested thickness — a product reformulated to be thicker than its certified version is no longer covered.

BPI certification is valid for three years and involves independent laboratory testing, application review, and ongoing market surveillance. The full certification process typically takes several months from application to certified product.

Requirement	ASTM D6400 Specification
Biodegradation rate	≥90% conversion to CO₂ within 180 days
Disintegration	≤10% material remaining on 2mm sieve
Ecotoxicity	No toxic residue — plant growth ≥90% of control
Heavy metals	Limits on As, Cd, Co, Cr, Cu, Hg, Mo, Ni, Pb, Se, Zn
PFAS	No intentionally added PFAS — state-level restrictions apply

What This Certification Means for Your Supply Chain

Your situation	How this certification helps
Sourcing resin for US-bound finished products	Starting with BPI-certified resin reduces testing scope and simplifies your own finished-product certification path
Supplying US retailers or municipal programs	Many require BPI certification at the finished product level — certified resin is the first step
Managing compliance documentation	Full test reports and technical data sheets included with every order
Multi-market export (US + EU)	Our resin also meets EN 13432 requirements — ask about combined certification options

Resin Certification vs Finished Product Certification

	Resin certification (this)	Finished product certification
What is certified	Resin granules (raw material)	Finished bags or packaging
BPI logo on packaging	❌ Not applicable for finished goods	✅ Authorized for finished packaging
Typical buyer	Film converters · Packaging manufacturers	Brands · Retailers · Distributors

Ask Us For

• BPI resin certificate (9001058-1, valid until 30 September 2027)
• ASTM D6400 laboratory test reports
• Technical data sheets for each resin grade
• Processing guidance and conversion support
• Guidance on finished-product BPI certification pathways

Verify our certification directly on the BPI Product Catalog: https://products.bpiworld.org/companies/henan-longdu-torise-biomaterials-co-ltd