On June 22, 2026, the China National Textile and Apparel Council convened an appraisal meeting in Suzhou, Jiangsu Province for the research project Key Forming Technologies and Applications of High-Count Elastic Core-Spun Yarn for Vortex Spinning, jointly developed by Wujiang Jingyi Special Fiber Co., Ltd. and Soochow University.

The appraisal committee, consisting of seven experts including Academician Xu Weilin and President Dong Kuiyong, unanimously concluded that the technological achievements of the project have reached an internationally advanced level.

Addressing Industry Pain Points & Tackling Technical Bottlenecks

Vortex spinning represents a key advanced spinning technology in modern high-end textile manufacturing and boasts unique strengths in core-spun yarn production. By guiding outer sheath fibers via core filament traction, the process effectively shapes yarn structures, boosting yarn tenacity while minimizing fiber hairiness, making it an ideal technique for manufacturing high-quality functional yarns.

However, as yarn fineness increases (higher yarn count), finer core filaments and fewer outer staple fibers create multiple production challenges. Ultra-fine core filaments are prone to severe vibration during feeding, causing erratic core filament movement in the vortex field and resulting in core missing and core exposure defects. Meanwhile, a reduced number of outer staple fibers cuts down the fiber count within the finished yarn, hindering yarn formation and insufficient wrapping coverage, which further triggers core exposure and yarn peeling issues. To resolve these widespread technical bottlenecks plaguing the industry, Wujiang Jingyi Special Fiber Co., Ltd. partnered with Soochow University for joint research and development.

Three Core Innovations Deliver Leapfrog Technological Upgrade

A systematic study was carried out on process parameters for opening, blending, carding and drawing frames. The optimized workflow improves fiber blending and carding performance, lowers neps in fine denier Lyocell/PA56 blended fibers, and enhances the evenness of finished sliver.

A high-pressure micro-vortex precision wrapping technology was developed, paired with custom ceramic vibration-damping rings and specialized spinning spindles. The coordination of flow fields between spindles and nozzles was optimized to greatly improve wrapping performance and structural stability of core-spun yarns.

Critical parameters including feed ratio, pre-tension of core filaments and blending proportion were calibrated, which drastically reduces yarn thin places and neps, and elevates both wrapping integrity and tensile strength of core-spun yarns.

Successful Industrialization Delivers Value to the Entire Industrial Chain

Leveraging its mature technical system and complete supporting production capacity, the project officially entered full industrial production in May 2025. This technical breakthrough significantly expands the spinnable range and application scenarios of vortex spinning, breaks the technical monopoly over high-count premium elastic core-spun yarns, and pioneers a new development route for the R&D and mass production of differentiated, functional high-end yarns in the textile sector.

The technology supports the development of a wide portfolio of premium yarn products applicable to downstream sectors including high-end apparel and functional textiles, promising broad market prospects, remarkable economic benefits, and profound social gains in advancing industrial upgrading.

Profiles of Project Completion Entities

Wujiang Jingyi Special Fiber Co., Ltd.

Located in Shengze Town, the renowned water town and capital of silk in the Jiangnan region of China, the company enjoys unmatched geographic and industrial cluster advantages. It has received numerous honors: National-level Specialized, Refined, Unique & Innovative "Little Giant" Enterprise, Top 100 Chinese Cotton Textile Enterprises, National Advanced Unit for Standardized Management of Cotton Textiles, Vortex Spinning Differentiated Yarn R&D Base certified by the China National Textile and Apparel Council, National 5G Smart Factory and National Green Factory. Today, it ranks among the world’s largest and most professional manufacturers of vortex-spun yarns.

The company attaches great importance to technological innovation and new product development with a professional R&D team. It maintains extensive industry-university cooperation with Donghua University, Soochow University, Jiangnan University and other institutions, focusing on the R&D and production of differentiated, functional, high-quality vortex-spun yarns to meet diverse market demands.

Soochow University

Soochow University is one of the first universities enlisted in China’s Project 211 and the 2011 Plan. Co-sponsored by the Ministry of Education and Jiangsu Provincial People’s Government, it is a national Double First-Class construction university with joint support from the China National Space Administration, and a key comprehensive university under Jiangsu Province.

Its textile discipline ranks among China’s top textile academic programs, designated as a National Key Discipline and a Jiangsu Provincial Advantage Discipline for four consecutive evaluation cycles. The university has built a full-chain research system covering fundamental research, technological development and industrial commercialization, providing solid disciplinary backing and robust innovative capacity to realize breakthroughs in key yarn-forming technologies for high-count elastic vortex-spun core-spun yarns.