The 2026 Raw Material Squeeze on Aluminum-Plastic Composite Films: Why Every Layer Is Getting More Expensive

In Over a Decade of Composite Films, We Haven't Seen All Three Layers Move Like This

A long-time customer called us last month, in a hurry: "Why is your PET/Al/PE quote higher again compared to last quarter?" I told him to check the recent aluminum, PET, and PE markets. It's not that we want to raise prices — every single layer of raw material is climbing at the same time.

That's not an excuse. Anyone in this business knows composite film isn't a single-material product. Each layer costs money. PET goes up, aluminum foil goes up, PE goes up — three layers of cost pressure stacking simultaneously, and the final price has no choice but to follow. This isn't one link in the chain breaking. It's the entire supply chain under pressure at once.

The Aluminum Chain: Capacity Locked, Inventories at the Bottom

Start with the aluminum side. China's electrolytic aluminum production capacity is permanently capped by policy at 45 million tons. There's zero room for new capacity. Current operating rates have pushed past 98% — plants are running flat out. Translation: even if demand keeps climbing, supply physically cannot follow. The ceiling is right there.

Then look at inventory. By end of July, aluminum ingot stocks across major Chinese consumption hubs dropped from a peak of 1.465 million tons in early May down to 953,000 tons — a cumulative draw of 512,000 tons, or 35%. The pace and magnitude of this drawdown are the sharpest seen at this time of year in three years. On the global side, LME aluminum inventories fell to 339,500 tons, an 11-month low. JPMorgan's report is even more blunt: global visible aluminum stockpiles sit at just 1.9 million tons, roughly nine days of consumption at current rates, and they've raised their 2026 price target to $4,000 per ton.

Why is supply so tight? The Middle East is the core variable. The US-Israel-Iran conflict has forced shutdowns of approximately 3 million tons of aluminum smelting capacity across the region — Qatar 265,000 tons, Bahrain 300,000, UAE 1.6 million, plus Mozambique's 520,000 — totaling 2.69 million tons globally, or 3.58% of worldwide operating capacity. And once an electrolytic cell shuts down, the molten aluminum solidifies and damages the internal lining. Restart isn't flipping a switch — it's a 6 to 12-month process. Add in the reshuffling of Russian aluminum flows, and the global supply chain is being redrawn in real time.

The Plastic Film Chain: Crude Breaks $95, Dragging PET and PE Along

Now the plastic film side. PET and PE prices are tethered to crude oil. Brent crude surged 5.19% in a single day on September 1, breaking through $95 per barrel, and settled at $95.9 on September 3. The driver: escalating US-Iran military tensions disrupting Hormuz Strait shipping, which handles 20% to 30% of global seaborne oil. When that chokepoint tightens, the raw material cost for the entire petrochemical chain moves up together.

BOPET's core cost is PTA. PE and CPP are driven by propylene and ethylene — all downstream of crude. Oil spikes, PTA spikes, propylene and ethylene spike, and film manufacturers' ex-factory prices have no choice but to follow. This isn't a short-term blip — as long as geopolitical tensions hold, the floor under crude is elevated.

The Convergence Point: All Three Layers Rising Together

Put the two chains together and the picture is clear. All three raw materials in PET/Al/PE composite film are climbing simultaneously — aluminum foil (aluminum price plus processing fee), BOPET (PTA cost), PE/CPP (olefin cost) — three vectors pushing in the same direction.

Here's what that means structurally. Composite materials have a different cost anatomy than single-material products. If you only make aluminum foil, you can offset a price rise through other product lines. Same with plastic film alone. But when every layer of a composite film goes up at once, the effects stack. Your total cost increase ends up exceeding the rise in any single raw material.

This round isn't a fluctuation in one link. It's a synchronized lift across the entire structure.

What We're Doing: Production Continues, Quality Standards Don't Move

Pricing is decided by the market. Quality is decided by us.

Production lines are running normally. Orders are progressing on schedule. From incoming raw material inspection at the gate, to in-process quality checks during lamination, to final inspection before packaging and warehousing — not a single inspection standard has been relaxed because raw materials got more expensive. Our target is simple: every shipment that leaves our facility, zero defects, zero complaints.

Raw material prices move in cycles. The product quality our customers receive must remain constant. That doesn't change with the market.

Procurement Advice: The Window to Lock Prices Is Narrowing

If you have procurement plans coming up, confirm your specifications and quantities early and lock in current pricing. The aluminum supply constraint is structural — the 45 million ton capacity cap isn't going away, Middle East restarts take time, and the inventory drawdown trend has no near-term reversal in sight. On the crude side, everything depends on geopolitical developments, and the uncertainty is even higher.

Pressure from both directions. Where prices go from here depends on the raw materials. If you can lock in now, don't wait.