Technology hub
A neat resin rarely hits the end-of-life, the processing window, the mechanical spec and the certification all at once. ECS solution blends are formulated backward from the claim: pick the disposal environment and the certification you need, and we engineer a PLA, PHA, starch-composite or carbon-negative biochar blend to meet it, validated against the standard, not just marketed against it.
- ASTM D6400 / EN 13432
- OK Compost HOME / INDUSTRIAL
- Carbon-negative (biochar + credit)
- EPR: CA SB 54, OR, ME
Engineered to a named standard and a real disposal environment. We name the certification, the body and the certificate number; “compostable” alone is not a claim.
In this pillar
Start here
Why a blend, and why proprietary.
A bioplastic solution blend combines a base biopolymer, such as polylactic acid (PLA) or polyhydroxyalkanoate (PHA), with other biopolymers, plasticizers and fillers, so the finished material hits four targets at once: a defined end-of-life, a processing window that fits the converter’s line, a mechanical property set the product needs, and a certification the brand can defend. Neat PLA is brittle and needs industrial composting; neat PHA is expensive; neat starch is moisture-sensitive. A blend is how those trade-offs get balanced.
ECS engineers each blend backward from the claim, not forward from a stock resin. The proprietary work is the formulation: choosing the base polymer, the filler, the plasticizer and the additive package to land on a named standard, a real disposal environment and a real extrusion or molding line, then validating the result against the test method. The competing model is a gated “make or sell” funnel that hands a buyer a catalog grade and leaves them to design around it. ECS does the opposite, delivering a blend specified to the application.
The materials that feed the blends
The blends draw on the other ECS material hubs. Biochar gives the carbon-negative composite its sequestered carbon. Biogenic calcium aragonite gives the starch composite a low-carbon, high-brightness filler. Chitosan can contribute an antimicrobial film layer. Each input is sourced on the same spec-controlled basis described on its own pillar page, so the blend inherits verified, documented components rather than mystery filler.
Bioplastic solution blends at a glance
4
Blend families: industrial-compostable PLA, home-compostable PHA, starch composite, carbon-negative biochar.
4
Targets every blend must hit: end-of-life, processing window, mechanical spec, certification.
2x
The carbon-negative blend carries two separate certified claims: compostable and carbon removal.
3
EPR programs the blends are matched against: California SB 54, Oregon, Maine.
What we formulate
Four blend families, one engineering approach.
Each family targets a different end-of-life and claim. Pick the disposal environment and certification you need, and ECS tunes the formulation to your converter and product.
Blend 1
Industrial-compostable PLA blend
A PLA-based blend toughened for rigid and film use, designed to break down in industrial composting and certified to ASTM D6400 or EN 13432. The workhorse where municipal or commercial composting is the disposal route.
- End-of-life: industrial compostable
- Certified to ASTM D6400 / EN 13432
- Rigid, film and foodservice formats
Blend 2
Home- and marine-compostable PHA blend
A PHA-led blend for products whose disposal pathway is uncontrolled, certified to OK Compost HOME and, by grade, marine-compostable. The right choice when the package will not reliably reach an industrial composter.
- End-of-life: home / marine compostable
- Certified to OK Compost HOME by grade
- Premium material for uncontrolled disposal
Blend 3
Starch and mineral-filled blend
A thermoplastic-starch blend filled with biogenic calcium for cost-sensitive film and molding. Balances converter-friendliness, cost and a low-carbon filler story by pulling the filler from the ECS calcium hub.
- Cost-optimized for film and molding
- Biogenic calcium filler (low-carbon)
- Drop-in claims validated by trial run
Blend 4
Carbon-negative biochar-composite blend
The flagship: a biochar-filled compostable base that is both certified-compostable and carbon-negative when paired with a verified removal credit. The blend that ties the ECS biochar and packaging stories together.
- Two certified claims: compostable + carbon removal
- Biochar from the ECS spec-controlled supply
- Removal credit under Puro.earth or Verra VM0044
Pick the right blend
Match the blend to the disposal environment and claim.
The disposal environment, not the marketing word, decides the material. This is the selector ECS uses to point a brand to the right family before any formulation work begins.
| If you need | Disposal environment | Blend family | Certification target |
|---|---|---|---|
| Lowest material cost, controlled disposal | Industrial composting | Industrial-compostable PLA blend | ASTM D6400 / EN 13432 |
| Safety when disposal is uncontrolled | Home / marine | Home-compostable PHA blend | OK Compost HOME |
| Cost plus a low-carbon filler story | Industrial composting | Starch and mineral-filled blend | ASTM D6400 + ISO 14067 filler LCA |
| A carbon-negative headline claim | Industrial composting | Carbon-negative biochar-composite blend | ASTM D6400 + Puro.earth / Verra VM0044 |
| Recycled-content rather than breakdown | Mechanical recycling | PCR-enhanced grade (catalog) | ISO 14021 recycled content |
Ready for real numbers
Get a blend engineered to your spec.
Tell us the product, the converter and line, the disposal environment, the certification you have to defend and the volume. We formulate the blend, validate it against the named standard, and return a documented, comparable bid.
Name the standard, the body, the number
The certification landscape behind the blends.
“Compostable,” “biodegradable” and “carbon-negative” are not claims on their own; they are claims against a named standard and a defined environment. Every ECS blend is engineered to a specific certificate, and we require the certificate number to resolve in a public database before any claim ships.
ASTM D6400
Industrial compostable (US)
The US standard for plastics designed to compost in municipal and industrial facilities. Often shown through BPI or TUV Austria OK Compost INDUSTRIAL marks.
EN 13432
Industrial compostable (EU)
The European packaging compostability standard, the EU counterpart to ASTM D6400. The reference for EU-market compostable packaging claims.
OK Compost HOME
Home compostable
A TUV Austria mark for materials that break down in a home compost, at lower temperatures than industrial composting. The right target when the disposal route is uncontrolled.
Puro.earth / Verra VM0044
Carbon removal
The carbon-removal methodologies behind the biochar-composite blend’s carbon-negative claim. A removal credit is separate from the compostable claim and must be certified on its own.
ISO 14067
Carbon footprint
The standard for a product carbon footprint, used to substantiate the low-carbon filler story in the starch and mineral-filled blend. Read the system boundary before the number.
USDA BioPreferred
Biobased content
Certifies biobased content via ASTM D6866 for procurement, particularly US federal. A biobased claim, not a compostability or carbon claim; keep the three separate.
ECS never lets one certificate stand in for another. A compostable mark does not make a material carbon-negative, and a biobased percentage does not make it compostable. Each blend carries only the claims its certificates actually support, with resolvable certificate numbers, so a brand’s packaging survives a claim audit and an EPR report.
Go deeper
Bioplastic and packaging guides.
This pillar gathers the ECS bioplastic cluster: the definitional and certification literacy, the EPR regulation tracking, the carbon-negative thesis, and the sourcing guides that turn a blend into a defensible packaging claim.
Definitions
Biodegradable vs compostable vs PCR vs PHA
What each term legally means, and the procurement trap of treating them as synonyms.
Certification
ASTM D6400 vs OK Compost vs BPI vs CMA
The compostability certification landscape, decoded by what each mark actually proves.
Buyer’s guide
PCR vs bio-based resin buyer’s guide
Recycled content vs breakdown, and which the recycled-content mandates require.
Carbon-negative
Carbon-negative biochar-composite packaging
How the flagship blend closes the accounting on both the compostable and carbon claims.
Regulation
EU PPWR and global EPR roadmap
The packaging rules driving material choices for brand owners through 2026 and beyond.
Sourcing (RFQ)
Bulk bioplastic resin sourcing guide
How to write a resin and blend RFQ that returns comparable, certified bids.
Why formulate through ECS
A formulator, not a vending machine of stock resins.
Resin sellers hand you a grade and a gated funnel. ECS engineers the material to your claim and verifies every certificate before it ships.
Engineered backward from the claim
We start from the disposal environment and the certification you have to defend, then formulate to it, instead of asking you to design a product around a stock resin.
Verified, documented components
The biochar, biogenic calcium and chitosan inputs are sourced on the same spec-controlled, certificate-verified basis as their own ECS pillars, so the blend inherits clean components.
Claims kept separate and certified
Compostable, biobased and carbon-negative are three different claims with three different certificates. Each blend carries only the claims its certificates actually support.
Built for the EPR report
We match the blend to the standard your state or EU program references and document the certificate, so it supports your Extended Producer Responsibility reporting.
Buyer questions
Bioplastic solution blends FAQ.
What is a bioplastic solution blend?
A bioplastic solution blend is a formulation that combines a base biopolymer such as PLA or PHA with other biopolymers, plasticizers and fillers so the finished material hits a specific target: a defined end-of-life, a processing window for a given converter, a mechanical property set, and a certification a brand can defend. A single neat resin rarely satisfies all four at once, which is why blends exist.
What makes the ECS blends proprietary?
ECS engineers each blend backward from the claim the brand has to defend rather than forward from a stock resin. The proprietary part is the formulation work: matching base polymer, filler, plasticizer and additive to a named certification, a real disposal environment and a converter’s line, then validating it against the standard. The output is a blend specified to your application, not a catalog grade you have to design around.
How can a bioplastic be carbon-negative?
A bioplastic is carbon-negative only when its accounting closes. The ECS carbon-negative blend fills a compostable base polymer with biochar, which is durable sequestered carbon, and pairs the formulation with a verified carbon-removal credit under Puro.earth or Verra VM0044. The compostable claim and the carbon-negative claim are separate and each must be certified; the blend is engineered so both hold up to audit.
Which blend do I need for my product?
Start from the disposal environment and the claim. If the product reaches industrial composting, a PLA blend certified to ASTM D6400 or EN 13432 usually fits. If the disposal pathway is uncontrolled, a PHA blend certified to OK Compost HOME is safer. If cost dominates and the filler can be low-carbon, a starch and mineral-filled blend works. If carbon-negative is the headline claim, the biochar-composite blend with a removal credit is the path.
Do these blends help with EPR compliance?
They can, but the material choice is only one input. Extended Producer Responsibility programs such as California SB 54 set recycled-content and recyclability or compostability requirements that drive fees. ECS matches the blend to the standard the program references and documents the certificate so it supports your EPR reporting, but compliance also depends on your packaging format and your state’s program rules.
Start a blend RFQ
Tell us the claim. We engineer the blend.
Submit your product, converter and line, disposal environment, the certification you have to defend and your volume. Our formulation desk engineers the blend, validates it against the named standard, and returns a documented, comparable bid.
- Blend formulated backward from your certification and disposal environment.
- Components inherited from the ECS spec-controlled biochar, calcium and chitosan supply.
- Each claim certified separately; compostable, biobased and carbon-negative never conflated.
- Certificate matched to the EPR program your state or market references.