Technological innovation drives rebirth of waste textiles

On June 20, the high-level forum on cutting-edge technology research for waste textile resource recycling engineering opened. Duan Xiaoping, vice president of the China Textile Industry Federation and president of the China Chemical Fiber Industry Association, Yao Mu, academician of the Chinese Academy of Engineering, Yu Jianyong, academician of the Chinese Academy of Engineering, China Chemistry He Yanli, Vice President of Fiber Industry Association, Wang Yuping, Vice President of China Chemical Fiber Industry Association, Lu Honggang, Vice President of China Textile Machinery Association, Wang Huaping, Vice President of Donghua University Research Institute, Lu Weidong, Vice Mayor of Nantong Municipal People’s Government and Secretary of Hai’an County Party Committee , Sun Jinji, former director of the Standing Committee of the People’s Congress of Hai’an County People’s Government and leader of the Haian Nylon Industry Development Leadership Group, Lu Zhongping, member of the Standing Committee of the Hai’an County Party Committee/Deputy County Mayor of Hai’an County People’s Government, Gu Yantie, Secretary-General of the General Chamber of Commerce of the Chemical Fiber Industry of Hai’an County and other leaders and Nearly 600 experts, business representatives, and media attended the forum to jointly discuss the technical issues of recycling and reuse of waste textile resources, and expressed insights into its future development trends.

Lu Weidong, Secretary of the Haian County Party Committee, introduced in his speech that chemical fiber is one of the traditional industries of Haian’s industrial economy. There are more than 200 chemical fiber enterprises in the county, including more than 70 enterprises above designated size. In 2016, sales reached more than 15 billion yuan, and the annual output of nylon yarn Reaching 400,000 tons, it is widely used in civil, industrial, military and other fields. In the future, Haian has established six major enhancements: strengthening organizational coordination, strengthening forward extension and backward extension, strengthening technological innovation, strengthening team building, strengthening policy support, and strengthening industry guidance.

In terms of the current status and development trend of waste textile resource recycling technology, Wang Huaping, deputy director of Donghua Research Institute, believes that at present, the comprehensive recycling rate of waste chemical fiber textiles and polyester bottle flakes in my country is insufficient, while Japan’s polyester bottle flakes and textile recycling The rate is 84%, 49% in Europe and 29% in the United States. Every year, more than 1 million tons of textile and clothing waste are generated in China, which are buried and burned as garbage. This not only causes a waste of resources, but also pollutes the environment. In addition, the inventory of used clothing exceeds 28 million tons. The development trend is PET recycling technology – high efficiency and high value. Polypropylene regeneration direct spinning technology – high efficiency, polypropylene regeneration technology – gradient utilization.

Wang Huaping also made suggestions on existing policies to strengthen the construction of the certification system and encourage the development of enterprises with industrial advantages. Construct four major systems of recovery, recycling, evaluation and application for the recycling and development of waste chemical fiber textile resources in my country. Provide solutions for the entry threshold, equipment and technical specifications, raw material specifications and product standards for the recycling industry, clean production standards for the recycling industry, and the establishment of energy conservation and emission reduction systems, and strengthen talent training and base construction. Strengthen the construction of product ecological safety standards, increase government procurement and professional customization, propose a textile recycling system and management plan suitable for China, and propose a performance evaluation, quality evaluation and safety evaluation system for recycled products, provide scientific guidance and publicity, and increase consumer recognition Spend. Strengthen overall policy design, coordination of the entire industry chain, full logistics coverage, research on the full-process regeneration and recycling development system covering raw material traceability, technical equipment, production processes and product applications, and establish a demonstration base. Formulate special taxation and development policies.

Discussion on the technical and economic use of chemical methods to recycle waste textiles with polyester as the main component. Wang Shaopeng, general manager of Shanghai Juyou Chemical Industry, proposed that garbage is a resource misplaced. The use of recycled polyester requires a change in people’s consumption concepts and government policy support. Industry rules and regulations, the formulation of product standards, scientific and technological innovation, and regenerative enterprises require more perseverance, patience, and determination. Promoting the development of waste polyester recycling technology can reduce the polyester industry’s dependence on petroleum and achieve sustainable development of the industry. Recycling engineering technology companies must be more responsible to improve recycling technology and increase the high value and added value of recycled products.

Li Ning Sports Products Wu Anfu has his own views on the innovative appeal of environmentally friendly fibers for sports functional fabrics. Consumer orientation is not an empty talk. Product innovation must break away from focusing only on research and development from a technical perspective. It must be distinctive from a consumer perspective. Such innovation is Effective innovation. From the perspective of consumers, several development suggestions are put forward: changes in clothing and skin, temperature, humidity, moisture and water vapor; sports functions and customer experience, more professional, more refined, more unique and healthier, for example, studying the muscles of athletes For group classification, clothing line design must be segmented according to muscle lines, otherwise it will be uncomfortable. Research and development must be based on human body movement status. Different movement methods have different clothing requirements. The functional fabrics developed in the past were about how to better wick away sweat after the human body sweats. The current demand is how to change the vaporization state of the human body to solve the problem of environmental problems and reduce heavy sweating when the human body sweats slightly.

Research on continuous polyester regeneration technology by chemical method, Zhang Shuo, deputy general manager of Zhejiang Luyu Environmental Protection Co., Ltd., the principle of reusing waste textile resources: do not cause secondary pollution of the environment due to recycling; do not consume a lot of energy due to recycling (energy = resources) ; Recycled products still have the possibility of regeneration and recycling, forming a closed loop of resources; the safety of recycled products must be guaranteed; in specific fields, the quality of recycled products must meet or exceed that of original products. Development suggestions for recycling waste textiles: formulating post-consumerStandards for the classification and recycling of waste textile raw materials; formulate specifications for the recycling of waste textile fiber waste from industrial enterprises, and implement a certification and filing system for waste textile recycling enterprises to prevent disordered discharge and environmental pollution; select different technologies according to different raw material grades to diversify Recycle, maximize the added value of the final product, and avoid the waste of raw materials by a single treatment method; advocate green procurement, introduce specific measures from the government level to encourage the application of recycled textiles, and encourage end consumer goods manufacturers to choose recycled textile fibers as raw materials; cooperate with the industry The association cooperates with terminal brands to guide the public’s consumption concept through certification and publicity, and improve the social image of recycled products. He also called on only one or two companies to produce and operate waste chemical fibers, which cannot fully maximize social benefits. To better control resource waste and environmental pollution, more companies and scholars need to devote themselves to the cause, and through demonstration parks and the support of leaders, continue to expand the scale of recycled textiles and achieve sustainable development of the polyester chemical fiber industry.

At the meeting, Zhang Li, deputy general manager of the Green Environment Department of Intertek Tianxiang Group, talked about the application and significance of life cycle assessment LCA in the circular economy. Zhang Jiangang, acting general manager of Beijing Sanju Sunshine Intellectual Property, introduced the intellectual property risks and avoidance of chemical fiber enterprises. Xue Haijun, director of the Haian County Chemical Fiber Industry Cultivation Office, honorary president of the Haian Chemical Fiber General Chamber of Commerce, and director of the Haian County State Taxation Bureau, focused on the development and investment environment of Haian’s chemical fiber and high-end textile industries.

Duan Xiaoping presided over the interactive session and asked the guests on the stage questions about hot issues in waste textile resource recycling and bottle flake recycling projects. Academician Yao Mu proposed that the recycling and processing of waste textiles should be standardized. In addition, as the functions of clothing and home textiles become increasingly diversified, the proportion of blended textiles increases. Therefore, the national government needs to take the lead and plans to expand the recycling of waste textiles. scale.

Xu Weilin put forward four suggestions. First, we should pay attention to the recycling of waste textiles from the national level; second, from the technical level, we should further improve the level of classification technology and expand classification channels; third, standards are very important, and restrictions should start from the bottle sorting at the source. Because consumers are worried about viruses, waste textiles need to be disinfected. Fourth, the recycled textiles produced must also have standards so that consumers can use them with confidence.

He Yanli emphasized three ideas. First, to solve the problem of opening up second-hand clothing; second, it is very important to sort and disinfect waste textiles that cannot be used. It is necessary to formulate sorting standards. The more scientific and detailed the sorting, the better for downstream utilization. value; third, the recycling rate of waste textiles is still very low, and domestic bottle flake companies need to become bigger and stronger. Currently, 28 companies are included in the list of companies that meet the standard conditions. Our gap lies in the fact that waste textiles are not well utilized and the consumable materials are not humane enough. We need to gradually change the current situation to achieve a closed loop.

Wang Huaping believes that the scale of bottle flake recycling resources must be increased, but at the same time energy consumption must be reduced and the entry threshold must be raised. At present, it is recommended that enterprises first recycle pure polyester textiles, or recycle textiles with a high proportion of natural fibers. Textiles with multiple components of equal proportions are not easy to recycle.

During the interaction, Zhang Shuo said that effective channels should be established to recycle and classify industrial and civilian waste textiles, and to recycle pure and blended textiles separately. Ensure that enterprises participating in the recycling of waste textile resources have complete pollution treatment measures and that their management level reaches a certain level. Industry self-discipline alone will not suffice. We must standardize and implement a certification system.

Source: China Textile Network