While most chemical fiber companies struggle with thin margins in chip spinning, Hengyi Petrochemical has drawn a new dividing line with a 4.87 billion yuan investment announcement. The 400,000-tonne PA6 melt direct spinning project, with an 18-month construction period spanning Guangxi and Hangzhou, is not just capacity addition but a repricing of value distribution across the nylon chain.
Background
According to the announcement, the project will be undertaken by Guangxi Hengyi New Materials and Hangzhou Yizhijin New Materials, funded by internal and external capital. Notably, the Guangxi base's existing 600,000-tonne PA6 chip facility will run at full capacity in 2026, providing a stable feedstock hinterland. In other words, this project is not built from scratch but compresses intermediate steps—packaging, warehousing, transport—directly into the spinning process, replacing logistics with process and batch flow with continuous flow.
Hengyi's proprietary melt direct spinning technology delivers striking metrics: 80% reduction in water consumption and 30% in electricity. Given that utility costs typically account for 15-20% of production costs in the chemical fiber sector, this could lower unit costs by 5-8 percentage points. For buyers, this is not just supplier margin improvement but potential long-term downward pressure on PA6 fiber prices.
Industrial Impact
From an industrial cluster perspective, the dual-base layout in Guangxi and Hangzhou implies strategic intent. Guangxi leverages upstream raw materials and energy dividends, while Hangzhou is close to downstream weaving and consumer markets, forming an axial division of "feedstock-spinning-market." This allows Hengyi to enjoy both western electricity price advantages and eastern order response speed, creating a geographical squeeze on single-base competitors.
More critically, after the project is operational, Hengyi's focus will shift from PA6 chip feedstock to downstream spinning processing. Previously, chip sales meant profits were intercepted by downstream spinning mills; now, integration captures that added value. Industry public data shows the price gap between PA6 chip and PA6 fiber typically ranges from 1,000 to 2,000 yuan per tonne. If the 400,000-tonne capacity is fully converted, theoretical additional gross profit could reach 400-800 million yuan—excluding cost savings from energy efficiency.
For small and medium spinning enterprises, this is a wake-up call. When leaders cut water use by 80% with proprietary processes, smaller players relying on traditional batch chip spinning will face dual pressure on energy costs and environmental compliance. The industry's shift toward high-end, green, and low-carbon practices is becoming a hard constraint: either follow process innovation or be eliminated at the tail of the cost curve.
From a macro perspective, Hengyi's move confirms PA6's status as a high-performance fiber material. Its dual-track layout in polyester and nylon hedges against single-variety cyclical fluctuations, while scaled adoption of melt direct spinning could prompt the entire nylon industry to reassess the traditional "chip-spinning" division. If more leaders replicate this process in the next two years, the industry cost curve will shift downward, intensifying price competition in end-use fabrics.