In April 2026, Cowin successfully completed and delivered a customized integrated continuous fiber processing project for a university laboratory in Hong Kong.
From bidding and tendering to design and manufacturing, the entire project took one year and has now officially passed acceptance by the experts.
The project comprises a laboratory-scale twin-screw extruder, fiber treatment unit, plasma treatment device, filament melt impregnation unit, cooling system, haul-off unit, and winding system. In this system, various carbon fibers are processed through the treatment unit, where a uniform layer of functional sizing agent is coated onto the fiber surface. This treatment protects the fibers, improves bundling performance, and significantly enhances the interfacial bonding between the fibers and resin matrix, thereby ensuring superior molding quality and mechanical properties of the subsequent composite materials.
The system is capable of processing most types of fiber materials. Through the specially designed twin-screw extruder and impregnation die, the system can produce a variety of Long Fiber Thermoplastic (LFT) materials as well as different 3D printing filaments. Designed with an operating temperature range of 420–450℃, the system meets the processing requirements of all polymers, including PEEK. Fibers treated with plasma exhibit further improved material performance.
Having deeply cultivated the field of continuous fiber 3D printing filaments for many years, Cowin Extrusion maintains in-depth cooperation with domestic universities (such as Beijing University of Chemical Technology) and research institutions. At present, Cowin Extrusion holds an almost monopolistic position in all domestic continuous fiber 3D printing filament projects, supporting the development and research of advanced new materials and innovative processes.
