Nylon Filament Market Warming: Cost Pass-Through and Structural Demand Divergence

Raw material costs are being transmitted downstream, but not all nylon filament varieties benefit equally. During the week of June 29 to July 5, the market in the two major nylon filament production and sales hubs of Shengze and Jiaxing showed a clear pattern of 'structural divergence': some fine-denier and differentiated products saw stronger demand, while conventional varieties faced substitution pressure from polyester filaments.

Cost Side: Caprolactam and Chips Edge Up

This week, caprolactam market prices rose slightly to 10,950-11,000 yuan/ton, and nylon 6 chip prices followed suit, reaching 11,400-11,500 yuan/ton, both up from the previous week. This cost-side change directly supported a stable-to-adjusted pricing pattern for nylon filaments. For weaving mills, higher raw material procurement costs mean compressed profit margins, but also incentivize a shift toward higher-value-added product mixes.

Demand Side: Differentiated Varieties Lead, Conventional Ones Under Pressure

From the perspective of specific product sales, the market divergence is evident:
- 15D/34F nylon DTY continued to sell well, with fine-denier products showing strong resilience in lightweight fabric applications.
- Demand for 40D/24F fully matte FDY experienced cyclical growth, driven by orders for water-jet matte high-density nylon spunbond.
- Purchases of 20D/1F and 30D/1F semi-dull nylon monofilament rebounded, indicating restocking in certain niche segments.
- In contrast, 70D/24F nylon-6 FDY saw only average demand due to sluggish sales of nylon-polyester blended fabrics, with prices stabilizing around 13,800 yuan/ton.
- 70D/24F nylon-6 FDY fully matte was particularly impacted by competition from polyester FDY fully matte, trading in the 15,300-15,500 yuan/ton range, mainly substituting for fully matte polyester taffeta.
- Nylon-66 DTY, due to its narrow application scope, experienced a situation of having a price but no market.

Industry Impact: Upstream Price Hikes vs. Downstream Inventory Digestion

Total demand for nylon interwoven fabrics this year has expanded compared to the same period last year, a positive signal for the current market. However, downstream weaving mills are primarily consuming previously accumulated stocks and remain cautious about launching a new round of centralized purchasing. The oscillating upward adjustment of upstream raw material prices is in a tug-of-war with downstream 'just-in-time' inventory strategies. For buyers, this means needing to more accurately time restocking to avoid concentrated purchases at cost peaks.

Practical Recommendations

For Buyers - Monitor the inventory cycles of fine-denier DTY and fully matte FDY, as demand for these varieties is relatively firm; consider locking in prices in advance. - For conventional 70D nylon filament, which is more susceptible to substitution, it is advisable to purchase on an as-needed basis and avoid stockpiling. - Keep an eye on caprolactam futures or spot price trends as leading indicators for inflection points in nylon filament prices.

For Mills - Adjust product mix appropriately, increasing the production ratio of differentiated varieties such as fine-denier DTY and fully matte FDY. - For conventional varieties significantly impacted by polyester, consider enhancing competitiveness by improving quality or developing blended products. - Strengthen communication with upstream chip suppliers to negotiate better procurement terms during this window of rising costs.