The Tecnopor Ban Is Over. The Blueberry Is Still Compounding.

There is a particular kind of forecasting error that never gets corrected, because the thing causing it is true. Ley N.° 30884 really did ban expanded polystyrene food containers in Peru. It really did push demand into polypropylene, PET and moulded fibre. And every year that passes, someone models the law as a growth driver for the year after — because a regulation reads as permanent, and permanence reads as compound growth.

It isn’t. The ban on delivering or selling tecnopor containers took effect on 20 December 2020, a year after the reglamento (Decreto Supremo 006-2019-MINAM) came into force. The substitution it forced ran for roughly two years. Between 2020 and 2022 it moved about 14,050 tonnes of demand out of expanded polystyrene and into materials that a converter can form — a one-off transfer worth roughly USD 12.65 million of added pool value, or 3.7 per cent of the 2025 market. What remains in expanded polystyrene is around 2 per cent.

Read those two numbers together and the shape of the error becomes clear. The transfer that everybody cites as a growth engine is already inside the base — it is 19.6 per cent of today’s 71.8 thousand tonne pool, sitting there in the 2025 starting line. It cannot happen again. Carry it forward as a driver for eight years and you over-forecast Peru by about a third of a percentage point annually, which sounds small until it sits on top of every other optimistic assumption in the same spreadsheet.

What a law cannot do

The more interesting question is what the law didn’t change, and that is the cost of entering the industry it created.

A single 700 kilogram per hour thin-gauge line produces about 4,200 tonnes a year. That is 5.8 per cent of the entire national market. The whole 2025 pool comes to 17.1 line-equivalents; by 2033 it is 24.3. Implied replacement cost across the industry works out at roughly USD 43 million against a USD 339 million pool — capital intensity of about 13 per cent of revenue.

That is not a small technical detail. It is the reason the regulatory transition cannot deliver what a converter most wants from it. Where entry costs a thirteenth of annual revenue, capacity arrives easily, fragmentation is permanent, and no participant accumulates pricing power. The law delivered volume. Volume is what the industry will keep getting, and volume is not margin.

This is the finding I would put in front of anyone considering a Peruvian forming line on the strength of the plastics narrative. The narrative is correct and the arithmetic behind it is real. The margin it implies is not there, and the reason is structural rather than cyclical.

The tonne that is worth 62 per cent more

If the law is banked, what is left? A tonnage market with a mix upgrade on top, and the mix upgrade lives in one place.

Peru’s rigid thermoformed pool — trays, clamshells, punnets, cups, lids, tubs and formed inserts, made by vacuum, pressure or plug-assist forming from sheet — splits into five end markets that should never be priced as one. Food service is 38 per cent of the tonnes at USD 4,200 a tonne. Retail food is 24 per cent at USD 4,600. Cups and lids are 8 per cent at USD 4,000. Non-food is 18 per cent at USD 4,900. And agro-export punnets and clamshells are 12 per cent of the tonnes at USD 6,800.

Twelve per cent of the tonnage, 17.3 per cent of the value. The tonne you sell to a blueberry exporter is worth 62 per cent more than the tonne you sell to a menú kitchen, and it is the only segment in the pool where the buyer is not price-sensitive in the ordinary way — because the clamshell is a rounding error next to the cost of a spoiled shipment reaching Rotterdam.

That is where the increment comes from. Base case: 4.5 per cent annual volume growth to 102.1 thousand tonnes by 2033, 5.7 per cent annual value growth to USD 528.0 million. The identity is 1.045 × 1.0115 = 1.0570 — four and a half points of tonnage, about 1.15 points of price and mix. The whole of the second term is the clamshell share rising.

The one number that validates the model

Everything in a build-up like this is an assumption until an external observation lands on top of it. Here, one does.

Peru’s 2025 blueberry exports were 373,514 tonnes at USD 2,457 million, with preliminary trade figures at 412,239 tonnes. At an average export pack of 1.5 kilograms and a 32 gram clamshell, that crop requires 249 to 275 million clamshells a year — 7.97 to 8.79 thousand tonnes of food-grade PET.

The model, built top-down from national plastics consumption and allocated by end market, independently assigned 8.62 thousand tonnes to the entire agro-export punnet segment. An external observation landing inside a modelled segment to within eight per cent is the only genuinely independent check available in this market, and it happens to be the segment that carries the value argument. I would rather have that than a purchased market-size figure with no arithmetic attached.

The risk is not where the industry looks

Ask a Peruvian converter what worries them and you will hear about resin. Naphtha, propylene, the dollar, the import price from China — all real, all volatile, all passed through within a season. Resin is 45 to 55 per cent of the cost of a formed pack and almost none of it is margin risk, because it moves for everyone at once.

The risk that matters is paper. Moulded fibre and formed paperboard compete for exactly the two segments where this pool is concentrated — food service and retail trays — and they do not compete on delivered cost. They compete on the same regulatory narrative that produced the thermoforming opportunity in the first place. A buyer who has already been persuaded that plastic containers are a reputational liability does not need a price argument to switch twice.

What I would argue with

The base of this market is a model, and it says so. Peru consumes approximately 950 thousand tonnes of plastics a year on the Ministry of Environment’s own published figure; a 42 per cent packaging share and an 18 per cent thermoformed share, both estimates, produce 71.8 thousand tonnes. The two coefficients are mine. Replace them and the pool moves.

They deserve replacing, in fact, because the ministry’s own statistics do not reconcile. Its consumption figure of 950 thousand tonnes, its per-capita figure of 30 kilograms and a census population of 34,157,732 imply 1,024.7 thousand tonnes — 7.9 per cent higher. Its 1.2 million tonne annual plastic-waste figure exceeds its own consumption figure, which is physically improbable. And its statement that Lima and Callao generate 886 tonnes a day, described as 46 per cent of the national total, implies about 703 thousand tonnes a year, 41 per cent below the waste figure. At least one of those is wrong, and the honest thing is to say so rather than average them into a number that looks measured.

I used 950 thousand tonnes because it is the only figure the ministry states as consumption. Everything downstream is a derivation you can audit and improve.

Which is the point of the whole exercise. The tecnopor ban is a good story that has already been told. The blueberry clamshell is a smaller story that is still running — and the difference between them is the difference between a law that moved a market once and a segment that keeps repricing it.

The full analysis, including the value chain, technology, competitive landscape, investment activity, regulatory and market risk chapters, is in Peru Thermoformed Packaging Market Size, Share & Forecast 2026–2033. The adjacent argument — that recycled feedstock availability, not demand, sets the pace of thermoformed growth — is in The Constraint Is the Bale.