Last week (September 15-21, 2025), the demand fatigue did not change, and there was no significant improvement in the demand of the end market. Downstream factories held onto rigid procurement from multiple sources, and the trading atmosphere on site was flat; The weekly closing price of Sinopec’s high-end caprolactam has been lowered to 9078 yuan/ton. The high-speed spinning and slicing market for PA6 chips is mainly deadlocked, with weak cost support. The market price of nylon fiber is mainly consolidating, and the price continues to be weak and stable.
Nylon filament prices remain weak and stable
According to the Commodity Market Analysis System of Shengyi Society, the price of nylon filament remained weak and stable last week (September 15-21, 2025). As of September 21, 2025, DTY (premium product) of nylon filament in Jiangsu region; 70D/24F) quoted 14320 yuan/ton; Nylon POY (premium product; 86D/24F) quoted 12050 yuan/ton; The price of nylon FDY (premium: 40D/12F) is quoted at 14900 yuan/ton, which is the same as the previous period.
Weak and small movements on the raw material side
In terms of cost: Last week (September 15-21, 2025), the spot market price of caprolactam fell weakly during the week. The weekly closing price of Sinopec caprolactam was 9078 yuan/ton (interest free for six-month acceptance). The nylon PA6 chip market was mainly weakly consolidated, with stable price trends and weak cost support. As of September 21, 2025, the benchmark price of caprolactam in Shengyi Society was 88795 yuan/ton, mainly due to weak price consolidation, with a weekly decline of 0.12%. During the week, the market price of high-speed spun nylon PA6 chips remained weak, stable, and fluctuating, with weak cost support being the main factor.
Supply and demand: During the week, the operating rate of some nylon filament manufacturers’ facilities decreased, and the overall market supply was sufficient. However, the industry inventory level still showed an increasing trend, and the supply side performance was poor; The demand in the end market is weak, and some downstream manufacturers have reduced production or switched production, resulting in a decrease in demand for nylon filament. It is difficult to find favorable support from the demand side, and many parties are following suit with rigid demand. Many industry players are adopting a cautious and wait-and-see attitude.
Future forecast
Cost aspect: In terms of caprolactam, the expectation for pure benzene is weak, and slice manufacturers have low enthusiasm for purchasing caprolactam. It is expected that the caprolactam market will remain weak and mainly consolidate at a low level in the short term; In terms of nylon PA6 chips, cost support is limited, and the supply level of PA6 chips in the market may continue to improve. Downstream market demand is weak, and it is expected that the market price of nylon PA6 chips will weakly decline.
Supply and demand: Traditional market demand is expected to improve in September, and the trading atmosphere will also improve. Therefore, it is expected that there may be an increase in demand for nylon filament market next month. However, under the current inventory pressure, some nylon filament manufacturers may have the possibility of reducing their production capacity, while the industry continues to release new production capacity, resulting in overall supply pressure remaining relatively high.
Overall, the upstream raw material caprolactam spot market and nylon PA6 chip market will continue to operate weakly, with a lack of cost support, high supply pressure, and difficulty in improving downstream market demand. Follow up on demand will be the main focus, and good news will not appear. Business analysts predict that the short-term nylon filament market will continue to be weak and stable, with weak price consolidation as the main trend.
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