Jiangsu Lianheng’s technical accumulation and market performance in the short fiber production line business fully demonstrate its development paradigm based on quality and driven by research and development, establishing significant technical barriers and market trust in the field of special fiber production equipment.
From the perspective of technological research and development, the enterprise has always adhered to the closed-loop logic of “quality benchmark – R&D iteration – market feedback”, and integrated the concept of precision manufacturing into the entire process of production line design. Its core competitiveness lies in the in-depth deconstruction of the spinning mechanism of polymer materials: by establishing a mapping model between rheological parameters and equipment process parameters during fiber formation, it achieves micron-level control over key indicators such as spinneret hole diameter accuracy, draft ratio regulation, and heat setting temperature field distribution. In response to the special spinning needs of high-performance fibers such as acrylic and carbon fiber, the R&D team has innovatively adopted a modular equipment architecture, enabling the same production line to adapt to the processing characteristics of raw materials with different degrees of polymerization through parameter reconstruction. This flexible production capacity significantly reduces the equipment transformation costs for special fiber enterprises and conforms to the current production trend of multiple varieties and small batches in the material industry.
In terms of the breadth of equipment application, Jiangsu Lianheng’s production lines have achieved full coverage of the high-performance fiber family. In the production of aromatic polyamide fiber (aramid), the low-temperature coagulation bath control system developed by it can control the fluctuation of coagulation rate within ±2%, effectively solving the industry problem of uneven axial strength of aramid fibers; aiming at the high-temperature spinning characteristics of polyphenylene sulfide (PPS) fibers, the screw extrusion system built with special alloy materials can withstand continuous operating temperatures of 280-320°C, with the equipment’s trouble-free operation cycle exceeding 8000 hours; in the field of bio-based fibers such as polylactic acid (PLA), the melt metering pump developed by it has an accuracy of 0.1%, ensuring the stability of molecular weight distribution of degradable polymer materials during spinning. This cross-material equipment adaptability stems from the enterprise’s systematic research on the molecular structure and processing performance of various fibers, forming an independently intellectual property equipment parameter database.
Market feedback data further verify the scientificity and reliability of its technical solutions. In the field of high-strength polyethylene fiber production, after a military supporting enterprise adopted its production line, the fiber breaking strength index increased from 30cN/dtex to 35cN/dtex, and the product qualification rate increased by 12 percentage points; after a biomaterial listed company introduced its PLA fiber production line, through the online quality monitoring system built into the equipment, it realized real-time correction of fiber linear density deviation, improving the stability of the air permeability index of downstream non-woven products by 20%. These empirical cases show that Jiangsu Lianheng’s equipment is not only a production tool but also a key variable for improving the performance of special fibers. This positive correlation of “equipment – material – performance” has built a technical trust bond between the enterprise and users.
From the perspective of industrial value, the development path of the enterprise conforms to the technical evolution law of the special fiber industry. Currently, high-performance fibers are developing towards the direction of “higher strength, more resistance to extreme environments, and more precise functionalization”. The requirements for production equipment have upgraded from simply “being able to produce” to “being controllable, repeatable, and optimizable”. By deeply integrating materials science and mechanical engineering, Jiangsu Lianheng’s production lines have become a key hub for transforming special fiber from laboratory achievements to industrial products. This “equipment empowering material innovation” model provides solid equipment support for China’s special fiber industry to break through foreign technical monopolies, and its technical logic and market performance have been widely recognized in the industry.