Raw material costs edged up, but end demand did not follow suit. From June 29 to July 5, data from the Shengze and Jiaxing nylon filament distribution hubs showed caprolactam market prices climbing to 10,950-11,000 yuan/ton, with nylon 6 chips following to 11,400-11,500 yuan/ton. This modest upstream hike, however, did not translate into broad price increases across finished nylon filament products, instead amplifying divergence among different specifications.
Cost Pass-Through vs. Demand Divergence
The transmission of raw material price increases to nylon filament prices has been uneven. On one hand, nylon 6 FDY prices remained stable with adjustments; the 70D/24F specification is currently quoted at around 13,800 yuan/ton, but trading volumes have not expanded. The core reason lies in sluggish orders for downstream nylon-polyester blended fabrics, with end-use weaving mills preferring to consume existing inventory rather than placing new purchases. This 'inventory digestion, price watching' mindset directly suppressed the movement of conventional nylon filament specifications.
On the other hand, certain differentiated specifications bucked the trend. 15D/34F nylon DTY remained in hot demand, reflecting the rigid demand for ultra-fine denier yarns in high-end fabrics—typically used in lightweight down jackets and memory fabrics, where procurement plans are less sensitive to short-term price fluctuations. Additionally, demand for 40D/24F full-dull FDY saw a cyclical uptick, driven by orders for dull high-density nylon spunbond on water-jet looms. Downstream mills, rushing to produce summer sun-protective and functional windbreaker fabrics, triggered a concentrated release of purchases for this specification.
Substitution Threat and Structural Concerns
Notably, the 70D/24F nylon 6 FDY full-dull specification performed modestly, currently quoted at 15,300-15,500 yuan/ton but with flat volumes. Behind this is the substitution effect from polyester FDY full-dull—the latter's cost advantage in full-dull polyester taffeta (also known as polyester spunbond) is significant, causing some orders originally using nylon full-dull yarns to switch to polyester. This substitution trend is not short-term but a structural shift driven by changing price ratios among chemical fiber raw materials over the past two years. When polyester prices remain low, nylon's share in conventional dull fabrics will continue to face pressure.
Another specification worth watching is nylon 66 DTY. Due to its narrow application scope, this product is now in a 'price without market' state. Nylon 66 offers better heat and abrasion resistance than nylon 6, but its price is nearly double, limiting demand to specific areas such as specialty workwear and high-end outdoor gear. As the economy slows and end brands compress costs, liquidity risks for such niche specifications are rising.
Short-Term Outlook Under Supply-Demand Game
From a macro perspective, total demand for nylon blended fabrics this year has expanded compared to the same period last year. However, this expansion is not uniform but concentrated in functional and differentiated categories. Conventional nylon filament is facing 'fragmented' procurement patterns—shorter restocking cycles and smaller per-order quantities. Currently, upstream raw material prices remain in an upward oscillation channel, but downstream weaving mills generally hold low raw material inventories. This means that once end orders concentrate, nylon filament prices could rebound quickly in the short term.
Overall, the nylon filament market next week will enter a balancing zone between 'cost push' and 'demand suppression'. For conventional specifications, prices are likely to remain stable with minor adjustments. For popular differentiated specifications like 15D/34F DTY and 40D/24F full-dull FDY, tight supply may drive modest price increases. Meanwhile, specifications plagued by substitution or narrow demand—such as 70D/24F full-dull FDY and nylon 66 DTY—still face downward price pressure.