Since mid-July, caprolactam prices have jumped from 11,700-11,750 yuan/ton at the start of the month to 11,900-11,950 yuan/ton, a rise of 200 yuan per ton. This seemingly modest increase is triggering a chain reaction across the nylon industry—crude oil's volatile uptrend combined with concentrated plant maintenance has sent clear supply contraction signals upstream. For nylon filament yarn, cost-side support is shifting from expectation to reality.
Supply-Demand Logic Behind the Price Hike
The caprolactam price rally is driven by two factors. First, crude oil entered a volatile upward channel in July, directly raising costs for upstream feedstocks like pure benzene. Second, multiple domestic caprolactam plants entered maintenance cycles in mid-to-late July, temporarily tightening market supply. Industry public data indicates production losses from maintenance amount to 8%-12% of normal monthly output, a gap unlikely to be quickly filled by inventories or imports.
From a chain transmission perspective, caprolactam accounts for over 70% of nylon chip costs, and chips constitute about 85% of direct costs for nylon filament yarn. This means the 200 yuan/ton caprolactam increase, after two-stage amplification, could ultimately raise nylon filament yarn costs by approximately 240-260 yuan/ton. For nylon weaving, where gross margins typically range 5%-8%, this cost increment is significant.
Differentiated Impact on Nylon Varieties
China Customs data shows spot prices for nylon POY, FDY, and DTY remained broadly stable in the first two weeks of July, but rising costs have begun compressing processing margins. All three products received a bullish score of 1, though the underlying logic differs.
Nylon POY, as an intermediate product, has the highest price elasticity. POY mills tend to adjust prices fastest when costs rise, but downstream weavers have limited acceptance, leading to potential lag in price pass-through. Nylon FDY and DTY, due to different end-use applications, have varying transmission paths. FDY mainly flows to apparel fabrics with relatively rigid demand, making price hikes easier to pass on. DTY is used in socks and seamless underwear, where consumer price sensitivity is higher, limiting room for increases.
Notably, current nylon chain inventories are at moderate levels—neither as high as Q4 2023 nor as tight as Q1 2024. This inventory position means cost increases won't trigger panic buying immediately, but will gradually raise downstream procurement cost expectations.
Regional Industrial Cluster Reactions
From a cluster perspective, the caprolactam hike first impacts nylon chip and filament mills in Zhejiang and Jiangsu provinces, which house about 70% of national nylon capacity. Factories in Xiaoshan, Shaoxing, and Wujiang are most sensitive to cost changes. Some mills have already tested price increases of 100-150 yuan/ton in late July, though actual transaction prices haven't fully caught up.
For downstream weaving clusters in Fujian and Guangdong, the impact has a one-to-two-week transmission lag. Currently, warp-knitting firms in Fujian's Changle area are still digesting previous low-cost inventories, expecting cost pressure only in early August. The nylon sock cluster in Puning and Nanhai, Guangdong, may react faster due to shorter order cycles.