High-efficiency vertical multi-function air suspension cashmere combined carding machine successfully developed in Beijing

After nearly six years of dedicated scientific research, supported by the Beijing Municipal Intellectual Property Office, the Organization Department of the Beijing Municipal Committee of the Communist Party of China, and Beijing Textile Holdings (Group) Co., Ltd., along with collaboration from various enterprises, a professor-level senior engineer from Beijing Xuelian Cashmere Co., Ltd. led the development of a high-efficiency vertical multi-functional special animal fluff combined carding machine. This innovation was guided by a model worker and government subsidy expert from the State Council, as well as an outstanding contribution expert in Beijing. The machine has been successfully developed, tested, and is now in operation and commercial production. This special animal fluff carding technology focuses on processing materials such as cashmere, yak wool, camel hair, and rabbit plush. The quality of the carding directly affects the combing efficiency, economic returns, and overall product value. Over the past two decades, significant progress has been made in this field, highlighted by awards like the "National Science and Technology Invention Award" and the "China Patent Invention and Creation Gold Award" in 1997. The "BSLD-95 Cashmere Combined Carding Machine" achieved a combing extraction rate of up to 50% for medium-quality raw materials, with a comprehensive extraction rate exceeding 95% and a fiber damage rate of less than 12%. This equipment not only became widely used domestically but also ended the import era of cashmere carding machines, being exported to countries like Iran and Mongolia as a result of China’s own intellectual property. The continuous advancement of science and technology drives ongoing improvements in special animal fluff combing techniques. During the application and practice of the BSLD-95 technology, further research was conducted, leading to new insights. For instance, certain cashmere raw materials in China require multiple passes through the carding machine to achieve the desired quality. Based on these findings, a new "high-efficiency vertical multi-functional air suspension special animal fluff combined carding machine" was successfully developed after six years of research. This versatile machine can be adapted for different raw materials, functioning as a cashmere carding machine, a camel combing machine, or a yak wool combing machine. Practical use has shown that this equipment is highly effective for processing various types of pre-carded fluff, achieving an extraction rate of over 64% for different velvet varieties—far surpassing other existing combing machines. It handles delicate fibers without causing pilling, even when multiple combing units are used. From a design perspective, this vertical carding technique, combined with air suspension, represents a novel approach. Unlike traditional horizontal carding processes, this vertical system completes the carding cycle within a shorter horizontal space, reducing energy consumption and improving efficiency. Compared to Japanese-style airflow transfer machines, which often cause issues like humidity loss and fiber separation problems, or British-style or Chinese FN241 models that risk damaging carding rollers, this new machine offers superior performance. It also outperforms modified versions of the 186 series carding machines, which previously caused fiber damage and inefficiencies. The new design reduces the length of a single carding unit from over 4 meters to just 0.7–0.9 meters, cuts power consumption from 3.5KW to under 1KW, and simplifies maintenance while improving operational convenience. Additionally, it allows precise control over the amount of cashmere and waste during the process by adjusting the size and spacing of the special leakage bottom beneath the opening roller. This ensures effective separation of coarse wool, fine bristles, and two types of hair, enhancing product quality. By optimizing parameters based on material type and product requirements, the extraction rate and yield have improved, while the amount of waste has been significantly reduced. This advancement marks a major step forward in the evolution of carding technology.

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