The utilization and disposal of waste paper in China in the 1970s was through simple cooking, sizing, beating, and washing, and was used to copy or match toilet paper and low-grade boxboard. By the 1980s, the recycling rate of waste paper had reached about 25%, and a few manufacturers could also produce deinked pulp. After entering the 1990s, some large and medium-sized paper-making enterprises successively introduced deinking equipment and technologies including production lines from abroad, and made targeted improvements and innovations in waste paper deinking agent and waste paper deinking equipment, which made China waste. Paper processing technology and equipment assembly levels have been fully developed.
Some of the larger cardboard manufacturers use imported waste paper and imported deinking equipment and technology to produce high-end products. Such as Shanghai Hongwen Paper, Fujian Qingzhou Paper Mill, Liaoyang Process Cardboard Factory, Anhui Wuhu Oriental Board Paper Mill, etc., using imported waste corrugated boxes, using the thermal dispersion method or cold-sieving method for the treatment of recycled pulp as the core, the bottom of the pulp, in The introduction of the production line or the original improved paper machine, the production of kraft boxboard and blended paper bag paper and other varieties, not only the High Quality grade, but also effective in the imported corrugated paper containing adhesives, impurities that affect the production and easy to cause paper disease, etc. Processing to ensure the normal operation of production. The enterprises represented by Guangzhou Paper Co., Ltd., Zhonghua Paper Co., Ltd. and Nanping Paper Mill have imported deinking production lines or main equipments from abroad, and adopted a flotation-washing synthesis method to dispose of old newspapers and old magazine papers. Guangzhou Paper Mill and Nanping Paper Mill made newsprint paper with recycled pulp. The Ningbo Zhonghua Paper Co., Ltd. uses waste paper recycled pulp as the core and bottom pulp, and produces coated white paperboard. Both have achieved good results.
Some domestic research institutes and production units have cooperated in the research and development of deinking technology and equipment. After utilizing the existing conditions of the company to innovate and reform, the production of small batches of waste paper recycled pulp has been successful. For example, Guangdong Zhongfa Paper Factory cooperates with the China Pulp and Paper Research Institute to produce newsprint with 100% old newspapers. The manufacturers in Xuchang, Jiaozuo, Jixian, Xinxiang and other places in Henan Province have made significant use of imported AOCC and other papers to copy high-strength corrugated paper and cardboard.
SMEs such as Fuzhou No. 2 Paper Mill and Nanning Xinyang Paper Mill use domestic equipment and technology to dispose of old newspapers and used cardboard to produce toilet paper and low-grade white paperboard. Hebi Paper Mill in Henan Province slightly modified the original equipment and used old newspapers to produce recycled newsprint. Xuchang, Yanshi's papermaking street, uses waste paper to produce toilet paper. Some paper mills in Xinmi City have made good use of domestic old cartons to produce mid- and low-end products such as boxboard and kraft liner paper.
Domestic equipment manufacturers and chemical production and research units have achieved good results in equipment performance and chemical quality through cooperation. For example, Hangzhou Light Industry Research Institute cooperated with Zhejiang Xinshi Paper Mill to develop a small waste paper treatment process and waste paper deinking system. The waste paper processing equipment researched by Liaoyang Paper Machinery Factory and Fujian Light Industry Machinery Factory has formed a series of products and successfully put into production. Some papermaking machinery factories in Shandong also produced different types of deinking equipment that have already been purchased by manufacturers. In addition, various types of deinking agents developed by Fujian Papermaking Institute, Hangzhou Chemical Research Institute, and Tianjin University of Science and Technology have also been recognized by users.
Industry insiders have made several suggestions on how companies can properly recycle and use waste paper:
1. When purchasing raw materials for waste paper, it should be strictly controlled. In particular, imported waste paper, in the current situation of many supply channels, unpredictable business methods, it is even more cautious. The enterprise must conduct a thorough examination of the operating waste paper supplier to understand the true status of the business unit, the source and supply of the supply and sales, the economic strength, and the degree of credit, etc., choose a credit-worthy supply partner, and agree to supply the goods, so as to avoid being deceived, resulting in Due economic loss.
2. For companies with considerable scale, strong financial strength and strong technical force, they can import foreign existing corrugated cardboard boxes, old magazine papers, and old newsprint papers, as well as the existing foreign deinking technologies including production lines. And equipment, production of high-quality recycled pulp, alternative wood pulp fiber, production of high-grade multi-variety products. This will not only be conducive to environmental governance, but also significantly increase the efficiency. For enterprises that already have straw pulp alkali recovery, they can also use imported recycled pulp to add straw pulp and commercial wood pulp, and copy high-grade cultural articles in proportion. This can reduce pollution load, save pollution costs, and reduce production costs. .
3. For paper mills that have been shut down or have no hope of shutting down for pollution control, a small amount of funds can be invested to improve the original equipment. The use of domestic waste paper to produce low-grade toilet paper, ordinary corrugated paper, or recycled newsprint can also be used. The distribution of domestic and imported waste pulp with medium-to-high grade products will likely lead to a vicious circle of raw material shortages and difficulties in pollution control.
4. When purchasing waste paper, enterprises should use their own equipment, technology, and production categories to classify and use them. Can use imported corrugated cardboard boxes, AOCC waste paper to produce high-grade boxboard, high-strength corrugated paper and paper bag paper or as core pulp and bottom layer pulp for the production of white paperboard; use old newspapers and add about 30% of old magazine paper, after flotation - After washing and deinking, the production of newsprint or white pulp core pulp and the bottom lining; the use of imported office waste paper, such as copy paper, computer printing paper, etc., choose a new deinking method, improve the paper machine or The introduction of the production line, the production of high-grade sub-cultural printing paper; the purchase of domestic waste paper can produce medium and low-grade fine cardboard and toilet paper. At the same time when using recycled paper to recycle paper, attention should be paid to the use of chemical additives in order to enhance the lack of indicators such as physical strength of paper products.
5. Domestic machinery manufacturers, chemical manufacturers, paper-making companies, scientific research institutes and other related organizations unite to jointly develop advanced deinking equipment, deinking agents, and enhancer chemicals, and continuously improve the use of waste paper to recycle papermaking equipment. The adaptability of equipment level and paper variety promotes the rapid development of waste paper utilization.
Some of the larger cardboard manufacturers use imported waste paper and imported deinking equipment and technology to produce high-end products. Such as Shanghai Hongwen Paper, Fujian Qingzhou Paper Mill, Liaoyang Process Cardboard Factory, Anhui Wuhu Oriental Board Paper Mill, etc., using imported waste corrugated boxes, using the thermal dispersion method or cold-sieving method for the treatment of recycled pulp as the core, the bottom of the pulp, in The introduction of the production line or the original improved paper machine, the production of kraft boxboard and blended paper bag paper and other varieties, not only the High Quality grade, but also effective in the imported corrugated paper containing adhesives, impurities that affect the production and easy to cause paper disease, etc. Processing to ensure the normal operation of production. The enterprises represented by Guangzhou Paper Co., Ltd., Zhonghua Paper Co., Ltd. and Nanping Paper Mill have imported deinking production lines or main equipments from abroad, and adopted a flotation-washing synthesis method to dispose of old newspapers and old magazine papers. Guangzhou Paper Mill and Nanping Paper Mill made newsprint paper with recycled pulp. The Ningbo Zhonghua Paper Co., Ltd. uses waste paper recycled pulp as the core and bottom pulp, and produces coated white paperboard. Both have achieved good results.
Some domestic research institutes and production units have cooperated in the research and development of deinking technology and equipment. After utilizing the existing conditions of the company to innovate and reform, the production of small batches of waste paper recycled pulp has been successful. For example, Guangdong Zhongfa Paper Factory cooperates with the China Pulp and Paper Research Institute to produce newsprint with 100% old newspapers. The manufacturers in Xuchang, Jiaozuo, Jixian, Xinxiang and other places in Henan Province have made significant use of imported AOCC and other papers to copy high-strength corrugated paper and cardboard.
SMEs such as Fuzhou No. 2 Paper Mill and Nanning Xinyang Paper Mill use domestic equipment and technology to dispose of old newspapers and used cardboard to produce toilet paper and low-grade white paperboard. Hebi Paper Mill in Henan Province slightly modified the original equipment and used old newspapers to produce recycled newsprint. Xuchang, Yanshi's papermaking street, uses waste paper to produce toilet paper. Some paper mills in Xinmi City have made good use of domestic old cartons to produce mid- and low-end products such as boxboard and kraft liner paper.
Domestic equipment manufacturers and chemical production and research units have achieved good results in equipment performance and chemical quality through cooperation. For example, Hangzhou Light Industry Research Institute cooperated with Zhejiang Xinshi Paper Mill to develop a small waste paper treatment process and waste paper deinking system. The waste paper processing equipment researched by Liaoyang Paper Machinery Factory and Fujian Light Industry Machinery Factory has formed a series of products and successfully put into production. Some papermaking machinery factories in Shandong also produced different types of deinking equipment that have already been purchased by manufacturers. In addition, various types of deinking agents developed by Fujian Papermaking Institute, Hangzhou Chemical Research Institute, and Tianjin University of Science and Technology have also been recognized by users.
Industry insiders have made several suggestions on how companies can properly recycle and use waste paper:
1. When purchasing raw materials for waste paper, it should be strictly controlled. In particular, imported waste paper, in the current situation of many supply channels, unpredictable business methods, it is even more cautious. The enterprise must conduct a thorough examination of the operating waste paper supplier to understand the true status of the business unit, the source and supply of the supply and sales, the economic strength, and the degree of credit, etc., choose a credit-worthy supply partner, and agree to supply the goods, so as to avoid being deceived, resulting in Due economic loss.
2. For companies with considerable scale, strong financial strength and strong technical force, they can import foreign existing corrugated cardboard boxes, old magazine papers, and old newsprint papers, as well as the existing foreign deinking technologies including production lines. And equipment, production of high-quality recycled pulp, alternative wood pulp fiber, production of high-grade multi-variety products. This will not only be conducive to environmental governance, but also significantly increase the efficiency. For enterprises that already have straw pulp alkali recovery, they can also use imported recycled pulp to add straw pulp and commercial wood pulp, and copy high-grade cultural articles in proportion. This can reduce pollution load, save pollution costs, and reduce production costs. .
3. For paper mills that have been shut down or have no hope of shutting down for pollution control, a small amount of funds can be invested to improve the original equipment. The use of domestic waste paper to produce low-grade toilet paper, ordinary corrugated paper, or recycled newsprint can also be used. The distribution of domestic and imported waste pulp with medium-to-high grade products will likely lead to a vicious circle of raw material shortages and difficulties in pollution control.
4. When purchasing waste paper, enterprises should use their own equipment, technology, and production categories to classify and use them. Can use imported corrugated cardboard boxes, AOCC waste paper to produce high-grade boxboard, high-strength corrugated paper and paper bag paper or as core pulp and bottom layer pulp for the production of white paperboard; use old newspapers and add about 30% of old magazine paper, after flotation - After washing and deinking, the production of newsprint or white pulp core pulp and the bottom lining; the use of imported office waste paper, such as copy paper, computer printing paper, etc., choose a new deinking method, improve the paper machine or The introduction of the production line, the production of high-grade sub-cultural printing paper; the purchase of domestic waste paper can produce medium and low-grade fine cardboard and toilet paper. At the same time when using recycled paper to recycle paper, attention should be paid to the use of chemical additives in order to enhance the lack of indicators such as physical strength of paper products.
5. Domestic machinery manufacturers, chemical manufacturers, paper-making companies, scientific research institutes and other related organizations unite to jointly develop advanced deinking equipment, deinking agents, and enhancer chemicals, and continuously improve the use of waste paper to recycle papermaking equipment. The adaptability of equipment level and paper variety promotes the rapid development of waste paper utilization.
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