While the chemical fiber industry debates overcapacity, Hengyi Petrochemical answered with a 4.87 billion yuan investment announcement: deepen the chain and green the process. In August 2026, this dual leader in polyester and nylon announced plans to build a 400,000-ton annual PA6 melt direct spinning project through subsidiaries Guangxi Hengyi New Materials and Hangzhou Yizhijin New Materials, with an 18-month construction period. This is not simple capacity expansion but a proactive gap-filling in the nylon chain, directly impacting upstream pricing and downstream spinning procurement.
Background
Melt direct spinning is not new, but large-scale PA6 application is rare. Traditional batch chip spinning requires cooling, packaging, storage, transport, and re-melting of chips—energy-intensive and lengthy. Hengyi's self-developed melt direct spinning links polymerization directly to spinning, eliminating intermediate steps, cutting water use by 80% and electricity by 30%. This significantly reduces per-ton production costs, amplified amid energy price volatility. For spinning mills that rely on chip purchases, this is akin to planting a "cost crusher" at the supply end.
The project sites in Guangxi and Hangzhou reflect clear industrial logic. Guangxi Hengyi already operates a 600,000-ton PA6 chip plant at full capacity in 2026, the cornerstone of Hengyi's nylon segment. Adding spinning capacity there absorbs chips locally, reducing logistics; Hangzhou Yizhijin is close to the Yangtze River Delta market for quick response to high-end fabric and apparel orders. This dual-base layout builds a closed loop from polymerization to spinning, paving the way for downstream nylon filament and engineering plastics.
Industry Impact
For the PA6 market, the pace of 400,000 tons of new capacity deserves attention. Domestic PA6 chip capacity already shows oversupply, with conventional chip processing margins near breakeven. By entering via melt direct spinning, Hengyi bypasses the chip red ocean and competes directly in spinning. This pressures existing nylon filament makers—they must upgrade or face cost disadvantages. Expect PA6 competition to shift from "selling chips" to "selling fibers" in two years; integrated players will hold pricing power, while single-stage processors may be squeezed out.
Trend-wise, Hengyi aligns with green transformation. National Bureau of Statistics data show chemical fiber industry carbon emissions are significant in the textile chain, making energy saving a policy constraint. Melt direct spinning reduces pollutants and waste, fitting carbon neutrality goals and easing access to local government support. Moreover, high-end nylon fibers see growing demand in outdoor sports, EV lightweighting, and electronics, with demand growth outpacing conventional fibers. This move targets high-value-added tracks, not low-end replication.
For downstream buyers, supply dynamics will subtly shift. Melt direct spun products offer better uniformity and dyeing stability, ideal for high-end fabrics; however, self-production may reduce market chip supply, increasing chip price volatility. Buyers should reassess supplier structures, prioritizing partners with integrated capacity to hedge raw material risks. With 18 months to completion, capacity release in 2028 will intensify spinning competition, likely triggering both price and technology wars.