Nylon filament prices in Shengze and Jiaxing moved higher during Aug 31-Sep 6, driven by firm upstream costs rather than demand recovery. Semi-dull nylon chips climbed about 400 yuan/ton week-on-week, squeezing spinners' margins. While most filament specs saw price hikes, trading volumes did not expand correspondingly, indicating cautious downstream acceptance. This round of increases appears to be a cost-push adjustment, not a signal of demand rebound.
Cost and Price: Upstream Strength Persists
Domestic caprolactam held at 13,450-13,550 yuan/ton, edging up from the prior week. Semi-dull nylon chips rose to 13,900-14,000 yuan/ton, a gain of roughly 3%. This increase quickly transmitted to filament offers, but the lack of volume growth suggests limited tolerance for higher raw material costs. Supply tightness in caprolactam, driven by plant maintenance and low inventories, underpins the upward momentum. For yarn producers, raw materials account for over 80% of costs; a 100 yuan/ton rise in chips adds about 110 yuan/ton to yarn costs. This week's chip increase has already eroded about 440 yuan/ton of profit, leaving spinners with little room if they cannot pass through prices.
Demand Divergence: Specialty Yarns Stand Out
The most notable feature this week was the stark divergence among specifications. 30D/1F bright trilobal nylon yarn saw higher transaction volumes, and 160D nylon air-textured yarn traded actively, both used in casual and functional fabrics. In contrast, conventional 70D/24F nylon-6 FDY saw weakening demand despite its price rising to 15,300-15,400 yuan/ton, reflecting sluggish orders for traditional nylon taffeta. Meanwhile, 40D/24F FDY full-dull yarn experienced growing demand, driven by downstream production of high-density matte nylon for lightweight outerwear like down jackets and windbreakers. However, 70D/24F FDY full-dull performed poorly, priced at 16,100-16,300 yuan/ton, as its main application in full-dull polyester taffeta lacked momentum. Semi-dull 20D/1F and 30D/1F yarns stayed dull with stable prices, while nylon-66 DTY remained largely untraded due to narrow application scope.
This divergence highlights a structural shift: conventional specifications face intense competition and price sensitivity, whereas differentiated, functional products retain growth potential. Buyers need more than simple price comparisons; they must align sourcing with fabric development directions.
Industry Impact: Weak Orders vs. Firm Costs
In the industrial clusters of Shengze and Jiaxing, large producers reported a slight increase in orders for nylon-interwoven fabrics, but overall demand this year has declined from last year. Insufficient fabric orders have directly reduced nylon filament consumption. Meanwhile, upstream costs remain firm, creating a scissors effect between cost-push inflation and demand drag. In the near term, nylon filament prices are likely to maintain a firm tone, with possible further upward adjustments next week. The medium-term outlook depends on the recovery of end-use apparel demand. If autumn/winter fabric orders release steadily, the prosperity of matte high-density varieties may persist; otherwise, cost-driven price hikes will prove unsustainable, and profits may be redistributed along the chain.
For trading companies, price risks from raw material volatility are significant. It is advisable to include price adjustment clauses in long-term contracts or use forward hedging instruments to mitigate exposure. Monitoring caprolactam plant operations can help anticipate cost trends.