Dow and RDM Just Launched a 95% Paper Barrier Board for Frozen Food: What Multiboard CirculaRR Means for Buyers

One of the more concrete announcements out of interpack 2026 in Düsseldorf came from Dow and the Italian board maker RDM Group: a food-contact paperboard called Multiboard CirculaRR, made almost entirely of recycled paper with a thin polyethylene barrier — about 5 percent by weight — sourced from advanced recycling. The target applications read like a tour of the formats where plastic film has dominated for years: frozen fish, cakes, fruit trays, dry pet food.

Below is what the launch actually involves, the certifications behind the recyclability claim, and why this particular package design will land on procurement desks before the end of the year — including the awkward question California is now asking about how that 5 percent gets accounted for.

What Multiboard CirculaRR Actually Is

The construction is straightforward in principle:

Substrate: recycled paper, the dominant component by weight
Barrier layer: approximately 5 percent advanced-recycled polyethylene from Dow
End-of-life: designed to be collected and processed in existing mixed paper recycling streams — no specialized infrastructure required

That last point is the commercial argument. Most multi-material food barriers — laminated foil, PE-coated paper with virgin polymer, metallized films — end up in landfill because they cannot be cleanly separated at a paper mill. By keeping polymer content under 5 percent and using a polyethylene that the 4evergreen protocol assessment confirmed mills can process, the package gets to be both a barrier and recyclable in the same line.

The Three Certifications Buyers Should Ask About

The launch named three independent confirmations, and procurement teams sourcing this format should ask for documentation on all three:

ISCC PLUS — confirms the recycled plastic via mass-balance chain of custody. This is the standard advanced recycling certificate; it traces input feedstock from waste plastic through to the resin used in the barrier.
ISEGA — validates food-contact suitability under European testing protocols. This is the document your food safety team needs before approving the material for direct contact with frozen fish or unwrapped baked goods.
4evergreen — the European fiber industry’s voluntary recyclability assessment. The CirculaRR launch cited 4evergreen confirmation that the board recycles within established paper systems, which is the de facto reference your downstream PRO will check.

For a buyer sourcing into the EU under the PPWR framework, those three certificates together give you most of what you need to defend the package’s recyclability classification — and crucially, the documentation trail your importer or PRO will request during the August 2026 transition.

The California Asterisk on Mass Balance

There is one wrinkle worth knowing if you sell into California. ISCC PLUS is a mass-balance chain of custody — recycled content is allocated to specific batches using credit-style accounting rather than physical tracking of molecules. The California legislature is currently moving AB-2253, a bill that would prohibit recycled content claims based on mass balance or book-and-claim accounting for products sold in the state.

If AB-2253 passes in its current form, packaging sold into California would need physical recycled content — actual recycled molecules in the package — to make a recycled content claim. A polyethylene barrier certified under ISCC PLUS would still be ISEGA-safe for food contact and 4evergreen-recyclable, but the brand using it could not legally claim “contains advanced recycled plastic” on the California-bound version. The package would still be sustainable in substance. The marketing claim around it would have to change.

This is not a reason to avoid materials like CirculaRR. It is a reason to plan two label variants — one for California compliance and one for jurisdictions that accept mass-balance accounting — and to push your supplier for clarity on which batches carry physical recycled content and which carry credit-only allocations.

Why the 5 Percent Polymer Threshold Matters

The structural decision to keep polymer content at roughly 5 percent is not arbitrary. European paper mills generally accept fiber products with polymer or non-fiber content under a threshold — usually cited around 5 percent — before the package gets diverted from paper recycling to landfill or energy recovery. The 4evergreen protocol’s recyclability assessments use thresholds in that range.

For procurement, this gives a fast screening question for any “recyclable barrier paper” pitch: what is the non-fiber content as a percentage of total weight? If the answer is over 5 percent, ask for the specific mill acceptance data. If the answer is under 5 percent and the supplier can produce a 4evergreen or RecyClass assessment, the package will likely survive a recyclability audit in most EU member states.

Where CirculaRR Fits Against Existing Barrier Options

The packaging buyer choosing a barrier for frozen fish or freezer-stable cake formats today has roughly three categories of option:

Plastic-only flexible film (PET/PE laminate or similar): excellent barrier, low cost per unit, but landfill-bound under most EPR fee structures and increasingly penalized under PPWR
Conventional PE-coated paperboard: partly recyclable, often with polymer content above the 5 percent threshold, mixed mill acceptance
Mono-fiber or near-mono-fiber barrier board (the CirculaRR category): recyclable in paper streams, higher unit cost, lower EPR fee exposure, defensible recyclability claim

The economics tilt the same way they tilt for paper foodservice packaging more broadly: as state EPR fees and PPWR recyclability grades start invoicing in 2027, the gap between “cheap plastic with a fee tail” and “more expensive fiber with no fee tail” narrows or reverses. Buyers running 2027 budgets right now are the ones already running this calculation.

Practical Questions for Your Next Supplier Conversation

If you are sourcing barrier packaging for frozen, refrigerated, or shelf-stable formats and want to evaluate whether CirculaRR — or a similar near-mono-fiber barrier board — fits, the questions to ask:

What is the total non-fiber content by weight? Under 5 percent is the threshold that matters for mill acceptance.
Do you have a 4evergreen or RecyClass assessment for this board? A specific document, not a general claim.
Is the recycled polymer content physical or mass-balance allocated? Critical for California-bound packaging if AB-2253 advances.
What is your ISEGA or equivalent food-contact certificate number? Required before any food safety approval.
What is the minimum order quantity and lead time? Newly launched materials often have 12 to 16 week leads — bake that into your 2027 sourcing calendar.
What is the all-in cost per impression including EPR fee modulation for your target markets? Unit price alone has stopped being the right comparison.

The Takeaway

The interpack 2026 fiber barrier announcements were not about a single new product. Multiboard CirculaRR is one of a wave of food-contact barrier boards designed to clear the 5 percent polymer threshold, carry food-safety certification, and recycle in paper streams — exactly the package design the EU PPWR regime and US state EPR programs are pushing toward. The brands that test, qualify, and switch in 2026 will have lower fee exposure and cleaner sustainability claims in 2027. The brands that wait will be evaluating these materials anyway, just under more time pressure.

If you are evaluating fiber-led barrier packaging for frozen, chilled, or dry food formats and want a supplier that can hand you the food-safety, recyclability, and recycled-content documentation buyers and PROs now require, talk to GQ TH Pack. We work with overseas food brands sourcing into the EU PPWR framework and US EPR states, and our spec sheets answer the six questions above the first time you ask.