On July 17, the international crude oil market experienced a rare sharp single-day rally. WTI crude futures closed at $82.49 per barrel, up $3.54 or 4.48%, while Brent crude settled at $88.10 per barrel, up $3.87 or 4.59%. For the textile industry, this is not just a headline—it directly impacts the cost baseline of the polyester chain.
Cost Shock: The Transmission Chain from Oil to Chemical Fibers
Crude oil is the upstream raw material for PTA (Purified Terephthalic Acid), which in turn is the core feedstock for polyester filament and staple fiber. Industry data indicates that 60%-70% of PTA costs are directly influenced by crude and naphtha prices. On July 17, Brent crude oscillated from below $83 to above $86 intraday, a swing of over $3. Such volatility typically transmits to PX and PTA spot markets within 3-5 trading days.
Historically, when Brent crude near $80/barrel posts a single-day gain above 5%, PTA spot prices tend to follow with a 300-500 yuan/ton increase within a week. This means textile enterprises are facing not a one-time cost shock but a potentially multi-week raw material price escalation cycle.
Polyester Chain: Squeezed Margins and Price Expectations
The polyester chain is at a delicate juncture. In the first half of 2026, polyester filament prices remained low due to weak global demand, with weaving mills adopting just-in-time procurement and maintaining low raw material inventories. The sudden oil rally is now disrupting this equilibrium.
For polyester plants, rising crude means processing margins are rapidly compressed. If PTA and polyester filament cannot follow suit, the polyester segment risks widening losses. If they do pass on costs, downstream weaving mills and fabric buyers will face higher costs. The intraday pattern of WTI crude breaking $80 and $81 on July 17 suggests a bullish consensus is forming.
Importantly, this oil rally is not isolated. Brent crude found strong support near $85 and eventually closed above $88, indicating strong long-side capital entry. For the textile industry, the second-half crude price center is likely higher than the first half, and cost pressure on polyester raw materials is rebuilding.
Mill Belt Reactions: Keqiao and Shengze Markets
As China's largest polyester filament consuming markets, the fabric trading hubs in Keqiao (Shaoxing) and Shengze (Wujiang) are most sensitive to raw material price changes. On the morning of July 18, some taffeta and pongee grey fabric quotes in Shengze showed tentative increases of 0.05-0.10 yuan/meter. Although a full price surge has not yet materialized, hoarding sentiment among traders and weavers has risen.
In Keqiao, the reaction has been more about inventory strategy. Some medium-sized fabric traders have proactively contacted polyester plants to lock in delivery prices for the next two weeks. This shift from 'wait-and-see' to 'price-locking' essentially reflects an anticipation of sustained raw material price increases.