PLA fiber has a new application, tobacco tow!

Jiangsu Heji Tobacco Materials Co., LTD., a subsidiary of Smart Holdings Group, plans to invest a total of 1 billion yuan to build a new project of 100,000 tons of polylactic acid fiber.

According to the data, Jiangsu Heji has developed and produced high-quality polypropylene tow, differentiated civilian filament, polylactic acid tow, the main products are PP smoke tow, PP functional tow, FDY polyester composite filament, FDY hot melt wire, polyester medium and high strength filament.

Du Aixiang, chairman of Zhisi Holding Group, Hu Xiaochao, chairman of Jiangsu Chaoda Logistics Co., LTD., Du Guodong, chairman of Jiangsu Heji Tobacco Materials Co., LTD., Du Guoliang, general manager of Jiangsu Xingguang Packaging Technology Co., LTD., District leaders Yan Fu, Deng Meng, Hu Qixin, Guan Xiaowei, Yu Xianglin, Inqi, Guo Qiuxiang, Director of Economic Development Zone Management Committee Fang Naifa attended the signing ceremony.

1. Research and development enterprise of polylactic acid fiber tobacco tow

At present, polylactic acid fiber tobacco tow is used to produce tobacco filters, and its research and application have made some progress, but it has not been widely used commercially. Here are some research and development companies.

Anhui Fengyuan Biological Fiber Co., LTD. : has built 10,000-ton polylactic acid fiber and yarn products production demonstration line, including an annual output of 200 tons of polylactic acid tow demonstration line, and successfully applied to Hubei Zhongyan, Sanchanghua tobacco and other health care cigarette products. 【 Click for details 】

Shaanxi Jinye Science and Education Group Co., LTD. : Its secondary subsidiary Hubei Yuyang Chemical Fiber Co., Ltd. is mainly engaged in the production and processing of tobacco filter rod, tobacco C fiber tow and polylactic acid tow.

Dongwan (Yangzhou) Bio-based New Materials Co., LTD. : Located in Touqiao Town, Guangling District, with a land area of 120 mu and an investment of 800 million yuan, the construction of 80,000 tons of plain silk bio-based composite fiber production line. The second phase plans to join hands with the government to build a bio-based health industrial park, with a planned land area of 300 acres, an investment of 5 billion yuan, and the construction of 120,000 tons of plain silk production line, 200,000 tons of bio-based modified materials project, and polylactic acid cigarette tow project.

Fujian Minrui New Synthetic Fiber Co., LTD. : On March 5, 2024, according to the announcement of the State Intellectual Property Office, the company applied for a patent called "a biodegradable tow preparation process", the preparation method can achieve the skin core are biodegradable polymer, so as to achieve the biodegradation of tobacco tow. The biodegradable resins include polylactic acid resin or polylactic acid blend with PBS and PBAT.

Jiangsu Heji Tobacco Materials Co., LTD. : On November 9, 2024, the total investment of 1 billion yuan is planned to build an annual output of 100,000 tons of polylactic acid fiber.

2, the advantages of polylactic acid fiber cigarette tow because the smoke emitted when the cigarette is burned contains tar and nicotine (nicotine), etc., which is harmful to human health, so the cigarette filter nozzle is required to filter the harmful components in the smoke. In addition, the filter is required to have appropriate resistance, hardness, rod weight, roundness and meet health standards. In the traditional cigarette industry, the mainstream of filter material is acetate fiber, and tobacco is mainly diacetic acid, also known as diacetate fiber. The full name of C fiber is polypropylene fiber, in addition to low-end smoke is still in use, the rest is fake smoke, private smoke in use. Cellulose diacetate tow cigarette filter for tobacco has the advantages of non-toxic, tasteless, small absorption of sunlight, good adsorption effect, strong texture, high efficiency of trapping smoke tar, good elasticity and heat stability, so cellulose diacetate tow is widely used in tobacco industry. Overall, polylactic acid fiber tobacco tow has the following advantages. Good degradability: polylactic acid is derived from natural plants, which can be naturally degraded by the human body, and can be completely degraded into carbon dioxide and water in the environment in a few months, with no potential harm to the environment, and is more environmentally friendly than traditional tobacco filter materials such as cellulose acetate tow. Strong adsorption performance: polylactic acid fiber tow has strong adsorption and elimination force on harmful components in the smoke, and can effectively adsorb harmful substances such as aldehydes and ketones in the mainstream smoke of cigarettes, reducing the harm to the human body. Similar smoke and taste with acetate filter: The filter made of polylactic acid fiber has similar smoke and taste with acetate filter on cigarettes, which can meet the needs of consumers and is a feasible alternative filter material. 3, polylactic acid fiber cigarette tow alternative prospects At present, the total global acetate fiber production is about 750,000 to 800,000 tons, accounting for 3% of the world's total chemical fiber production, of which cigarette tow is about 550,000 to 570,000 tons, the main proportion. The price of acetate fiber is about 20,000 yuan a ton, which is a very advanced material. Nicotine and solanesol extracted from cigarette butts are more expensive. The value of China's tobacco acetate fiber reached 4 billion yuan. According to the data in 2013, the market demand for tobacco acetate tow in China is about 280,000 tons. The main manufacturers of tobacco acetate fiber tow in China include Nantong Acetate Fiber Co., LTD. (production capacity 105,000 tons), Xi 'an Huida Chemical Industry Co., LTD., Xi 'an Da 'an Chemical Industry Co., LTD. (production capacity 40,000 tons), Kunming Acetate Fiber Co., LTD. (production capacity 35,000 tons), Zhuhai Acetate Fiber Co., LTD. (production capacity 35,000 tons), and Double Way Eastman Fiber Limited company (production capacity of 30,000 tons), etc.

4. Preparation method of polylactic acid fiber tobacco tow

The composite spinning method of modified activated carbon and polylactic acid: the pre-modified activated carbon was prepared by treating activated carbon with ammonia water, and then the pre-modified activated carbon was alternately immersed in anionic polyelectrolyte solution and cationic polyelectrolyte solution by layer electrostatic self-assembly technology. At the same time, the modified polylactic acid was prepared by the reaction of polylactic acid with allyl quaternary ammonium salt. Then, the modified polylactic acid and activated carbon were prepared into the skin spinning solution, and the hollow porous polylactic acid fiber was prepared by coaxial electrostatic spinning. Finally, the degradable polylactic acid fiber tow was prepared by drawing, curling and drying.

Adding filler reinforcement method: adding carbon nanotubes and modified sepiolite powder to polylactic acid to improve the mechanical properties and heat resistance of polylactic acid composite. For example, carbon nanotubes are first modified, and then mixed with modified sepiolite powder and polylactic acid to melt, spinning to obtain polylactic acid primary fiber tow, and then stretching, crimping and heat shaping the primary fiber tow to obtain polylactic acid fiber tow for cigarette filter.

Blending modification method: Poly (L-lactic acid), poly (D-lactic acid), poly (lactic acid) copolymer, stearic acid and its salt compounds are mixed evenly according to a certain proportion, then extruded and granulated to obtain poly (lactic acid) modified resin particles, and then the particles are added to the spinning machine for spinning, and after cooling, drafting and shaping treatment, degradable cigarette filter tow is prepared.