A disconnect between rising upstream costs and sluggish filament demand is becoming the norm in Jiangsu and Zhejiang weaving hubs. During the week from August 31 to September 6, domestic caprolactam was quoted at 13,450-13,550 yuan/ton, while semi-dull nylon chips rose to 13,900-14,000 yuan/ton, up about 400 yuan from the previous week. This increase was passed on to filament prices, but downstream buying remained lackluster, with most transactions limited to urgent small orders.
Cost-Price Transmission
The 400 yuan/ton rise in chips theoretically adds about 500 yuan/ton to nylon filament costs, yet actual filament price increases were not commensurate. For example, 70D/24F nylon-6 FDY was quoted at 15,300-15,400 yuan/ton, up only slightly, as demand softened due to sluggish regular nylon taffeta. This indicates incomplete cost pass-through, squeezing spinners' margins.
Another telling figure: 70D/24F nylon-6 FDY full-dull was priced at 16,100-16,300 yuan/ton, mainly for water-jet full-dull polyester taffeta, which has been performing poorly. The price increase here is cost-driven rather than demand-led. In contrast, 40D/24F nylon FDY full-dull saw rising demand due to cyclical consumption in water-jet dull high-density nylon taffeta, making it one of the week's bright spots.
Product Divergence and Industry Signals
The uneven performance across products reflects structural changes in end-use orders. 30D/1F bright trilobal nylon yarn saw higher volumes, and 160D nylon air-textured yarn traded moderately, both typically used in silk-like and casual fabrics, indicating sustained orders in certain niches. Meanwhile, 20D/1F and 30D/1F semi-dull nylon sold sluggishly with stable prices, pointing to intense competition in conventional fine-denier products and downstream price pressure.
Nylon-66 DTY was quoted but saw no deals, mainly because of its narrow application and much higher price than nylon-6 equivalents. When fabric orders are insufficient, buyers tend to substitute nylon-6. This is not new in Shengze and Jiaxing, but two consecutive weeks of such weakness warrants attention—if demand remains low, spinners may shift capacity from nylon-66 to differentiated nylon-6 products.
Outlook
Large producers report a slight increase in orders for nylon interwoven fabrics, but overall demand this year has declined from last year, with insufficient fabric orders being the key constraint. Caprolactam supply remains tight and prices are firm, so nylon filament prices are likely to edge up again next week, but gains will be capped by downstream acceptance. For buyers, current prices are at a cyclical high, making stockpiling risky. For mills, balancing raw material inventory and finished goods sales is crucial to avoid losses if feedstock prices correct.