FinBlocks Tech
Markets · Commodities & industrials

Recycled plastics

Recycled-content mandates and packaging taxes have created real, legally obligated demand for recycled polymer. What has not appeared alongside it is a price. Material moves through brokers at a negotiated premium or discount to virgin resin, quality is assessed by whoever is buying, and a brand owner committing to 30% recycled content has no reliable number to plan against.

Instrument
Polymer × grade × form × region
Session pattern
Daily or weekly call auction
Precondition
A grading standard everyone accepts

01 · How this market works today

Two loads of the same grade, and no way to tell them apart before you buy.

Secondary raw materials are heterogeneous in a way virgin resin is not. Colour, contamination, moisture, intrinsic viscosity, odour and food-contact eligibility all vary between loads that carry the same name, and none of it is visible on a purchase order.

Quality is asserted by the seller and discounted by the buyer

Without an independent assessment at the point of sale, every buyer prices the worst plausible load. Recyclers producing genuinely good material subsidise those producing poor material, which is precisely the incentive structure you would design if you wanted to discourage investment in better sorting.

The price is virgin resin, plus or minus a guess

Recycled grades are quoted as a differential to a virgin benchmark that has nothing to do with them, negotiated per deal. When virgin prices collapse the recycled market collapses with them regardless of recycled supply, because there is no independent price to anchor to.

Supply is thousands of small recyclers with one route to market

A processor with a few hundred tonnes a month reaches large buyers only through a trader. That trader is a genuine service and an information monopoly, and the recycler has no way to know whether the offer in front of them is the market or a fraction of it.

Obligated demand has arrived without a market to meet it

Recycled-content requirements and plastic packaging taxes give brand owners a legal reason to buy. They are now budgeting for a commitment whose cost they cannot forecast, against a supply base they cannot see, using a benchmark that does not describe the material.


02 · What an auction changes

Price discovery, in public, with the volume behind it.

Everything here turns on moving the quality assessment from the moment of sale to the moment of deposit. Do that, and a heterogeneous material becomes a set of homogeneous instruments that can trade like anything else.

The specification becomes the instrument

Polymer, grade, physical form, food-contact status, colour band and region together define a book. Tested once, at deposit, by a laboratory with no position in the trade. What was an argument between buyer and seller becomes an attribute of the thing being traded.

A published premium or discount to virgin

The number the entire sector argues about — what recycled material is actually worth relative to virgin — becomes an observable spread between two prices rather than an assertion in a market report. Prices can be quoted outright or as a differential; either way the differential is finally a transaction.

Good material stops subsidising bad

When food-grade rPET flake and general-purpose rPET flake are separate instruments with separate prices, a recycler that invests in better sorting and washing gets paid for it. That is the mechanism by which a price signal turns into capital expenditure in the supply chain.

Small recyclers reach every buyer at once

A lot in the book is in front of the whole market, and price–time priority does not know how large the seller is. The buyer who values that grade most highly takes it, rather than the buyer whose trader happened to call that week.

Netting suits a market of many small lots

A day of small parcels between the same converters and traders nets to a handful of payments per settlement date, which matters when the average trade is a truckload and the participants are working-capital constrained.

Auction price discovery and the Indicative Equilibrium PriceA chart of cumulative demand and cumulative supply against limit price across eight ticks from 148.10 to 148.45. Cumulative demand falls from 14,400 to 400 as the price rises; cumulative supply rises from 500 to 11,700. Bars behind the curves show the executable volume at each price, which is the lesser of the two. The tallest bar, and therefore the Indicative Equilibrium Price, is 6,300 units at 148.25, leaving a surplus of 900 on the demand side.03,0006,0009,00012,00015,000IEP 148.256,300 executable900 surplus on the demand side148.10148.15148.20148.25148.30148.35148.40148.45Cumulative quantityLimit price · tick 0.05Cumulative demandCumulative supply
Cumulative demandCumulative supplyExecutable volume at that price
Figure 1How an auction finds its price. Cumulative demand falls as the price rises and cumulative supply rises with it. The engine examines every price at which bids and offers overlap and uncrosses at the one where the greatest volume can be matched — the same mechanism whichever market the book happens to hold.

03 · What Mehrex supplies

The parts that are configuration rather than a project.

A venue a small recycler can use from a browser, with the session flexibility a thin market needs and the settlement mechanics that make many small trades affordable to process.

A first configuration — settled in the market model workshop, not fixed by the platform
SettingTypical starting point
InstrumentPolymer × grade × form × food-contact status × region
Lot sizeOne tonne, or the market's customary truckload parcel
PriceOutright, or a differential to a published virgin benchmark
SessionsDaily call auction; continuous where a grade supports it
ValidityDAY and GTD, so an offer can rest across several auctions
MembersRecyclers, traders and converters under a Firm / Node / User hierarchy
SettlementNetted cash; release instructed to the consolidation point

The modules that carry it

01 · core

Matching Engine

Call auctions per instrument for the thin grades and continuous trading for the liquid ones, with per-day overrides so a grade can uncross daily in season and weekly outside it.

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03 · channel

Client Trading Front-End

A bundled Client Trading Front-End means a recycler with no development capability participates from a browser on day one, with credentials bound to their firm.

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05 · post-trade

Clearing

Netting per participant and settlement date, fees per trade, and enriched trade-capture records telling the warehouse or consolidation point which lots to release.

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04 · core

Risk Management

Buying power and notional limits per participant, so a converter cannot buy beyond funded capacity and a rejection names the limit that stopped it.

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04 · What you still have to build

The honest half of the estimate.

This is a market where the trading system is genuinely the small part. If the grade cannot be trusted, the instrument is fiction and the book is trading a name rather than a material.

A grading standard the whole sector accepts, and laboratories to apply it

Published specifications per grade, accredited testing, calibrated equipment at every deposit point, sampling protocols and an appeals process for a contested result. Nothing on this page works without it, and building it is a standards-body and accreditation programme rather than an integration.

Consolidation points and storage

Somewhere material is delivered, sampled, graded and held against a lot in the book. Recycled polymer is bulky and low value density, so the economics of storing and moving it constrain the market's geography far more than the software does.

Chain of custody and food-contact certification

Food-grade claims are a regulatory matter with a documentary trail behind them, assessed by bodies such as EFSA or the FDA on a process basis. A traded lot must carry that provenance intact through storage and transfer, which is a records system you build and are audited on.

Recycled-content claims, mass balance and their audit

Whether a buyer may count a purchase towards a regulatory obligation depends on accounting rules — physical segregation versus mass balance, and which certification scheme is recognised. That determines what your instruments must represent, and it is settled with regulators before launch.

Logistics, and who bears the freight

Delivery terms, haulage, cross-border movement of what some jurisdictions classify as waste, and the notification regimes that come with that classification. A matched trade is the beginning of an operation your team runs.

Bringing the incumbent traders in

The traders currently intermediating this market hold the relationships and the volume. A venue that sets out to disintermediate them launches into an empty book. Recruiting them as members with a defined role is the difference between a market and a pilot.


Questions

What evaluators ask first.

How can a variable-quality material trade in an order book at all?

By moving the quality assessment upstream. The instrument is a tested specification — polymer, grade, form, food-contact status, region — assessed once at deposit by an independent laboratory rather than negotiated per trade. Two lots in the same book are then genuinely comparable, which is the precondition for price–time priority meaning anything.

Does Mehrex handle the testing and grading?

No. Mehrex trades whatever the instrument definition says it trades. The specifications, the accredited laboratories, the sampling protocol and the appeals process sit outside the engine and are the substantive part of establishing this market.

Can prices be expressed as a premium or discount to virgin resin?

Yes. The instrument's price can be defined as a differential to a published benchmark rather than as an outright level. What the engine requires is that prices sit on the instrument's tick table so orders are comparable; whether that price is an outright or a spread is a definition, not a code change.


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Next step

Tell us about your recycled plastics market. We will show you the engine matching.

A live demonstration runs about an hour: the order book, the Control Panel, an auction uncrossing, and a replay of the journal that produced it.