In mid-July, spot prices of polyester staple fiber (PSF) in Jiangsu recorded a new round of increases, rising 30 yuan per ton to 7,530 yuan/ton. This price movement is not an isolated event but a concentrated reflection of sustained upstream cost pressure. According to industry data, the current negotiation range in Jiangsu has narrowed to 7,450-7,650 yuan/ton, with the lower end near 7,400 yuan/ton, indicating that low-price inventory is being rapidly absorbed.
Strengthened Cost-Driven Logic
The direct driver of this price hike is the notable rebound in international oil prices in early July. Geopolitical uncertainties pushed Brent crude above $85 per barrel, lifting upstream feedstocks such as PX and PTA. As an intermediate product in the polyester chain, PSF pricing has long followed a "cost plus processing fee" model, where marginal changes in raw materials are almost seamlessly transmitted to the staple fiber segment.
From a chain perspective, the PTA price increase provides the most direct support for PSF. On July 15, PTA spot prices also rose synchronously, further compressing the processing margin for staple fiber. This means that even as PSF producers actively raise prices, their actual profitability improvement remains limited. For downstream buyers, this signal is worth heeding: if costs continue to run hot, PSF prices may break through the sensitive threshold of 7,600 yuan/ton.
Regional Market Response and Inventory Structure
As a major production and sales region for PSF in China, Jiangsu's price fluctuations serve as a bellwether for the national market. Mainstream large mills have steadily pushed prices from around 7,300 yuan/ton at the beginning of the month to current levels, an increase of approximately 3%. However, a notable detail is that a small volume of lower-priced goods (around 7,400 yuan/ton) still trades, indicating that some mills are not fully following the rally amid destocking pressure.
This price stratification reflects a structural contradiction in the market: on one hand, cost-push price increases are rigid; on the other hand, operating rates in downstream weaving, nonwoven, and filling material sectors have not rebounded synchronously, limiting actual demand growth. The Texworld editorial team learned from industry surveys that some small and medium-sized weaving mills in Jiangsu and Zhejiang have begun to reduce PSF purchases, turning to consume earlier stockpiles.
Downstream Transmission Faces Resistance
The impact of rising PSF prices on downstream sectors is divergent.
- Spinning mills: Margins for pure polyester yarn and polyester-cotton yarn are squeezed. Some mills have attempted to raise yarn quotes, but end-use garment orders show limited price acceptance, creating a transmission bottleneck.
- Nonwoven producers: Cost pressure rises for spunlace and thermal-bond nonwoven mills, but demand in hygiene and filtration materials remains relatively stable, offering stronger pricing resistance compared to textile applications.
- Filling material market: The price gap between recycled and virgin PSF widens, prompting some toy and home textile manufacturers to consider substitution.
Overall, the sustainability of this PSF rally hinges on two variables: the subsequent trajectory of crude oil prices and the actual pace of downstream order recovery. If oil prices retreat, PSF may face a rapid correction; if seasonal restocking demand emerges, the upward trend could extend into mid-August.