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1. Some of the larger cardboard production companies 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 box cardboard and blending paper bag paper and other varieties. Not only the quality is high, but also the imported corrugated paper contains adhesives and impurities that affect the production and cause paper diseases, and can be effectively treated to ensure the normal operation of production.
2. 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 used copying newsprint paper with recycled pulp, while Ningbo Zhonghua Paper Industry Co., Ltd. used waste paper recycled pulp as the core paste and bottom layer paste to produce coated white paperboard. Both achieved good results.
3. Some domestic research institutes and production units have cooperated to research and develop de-inking technologies and equipments. After utilizing the existing conditions of the company to innovate and reform, the production of recycled pulp for small-batch waste papers has been successful. For example, Guangdong Zhongfa Paper Factory cooperates with the China Pulp and Paper Research Institute and uses 100% old newspapers to produce newsprint. The manufacturers in Xuchang, Jiaozuo, Ganxian and Xinxiang of our province use imported AOCC and other waste papers to copy high-strength corrugated paper. And box cardboard effect is remarkable.
4. Small and medium-sized enterprises such as Fuzhou No. 2 Paper Mill and Nanning Xinyang Paper Mill used domestic equipment and technology to dispose old newspapers and old paperboard to produce toilet paper and low-grade white paperboard. The Hebi Paper Mill in Henan Province slightly modified the original equipment and used domestic old newspapers to produce recycled newsprint to solve the pressure of all laid-off workers. Xuchang and Yanshi’s papermaking streets use domestic waste paper to produce toilet paper. Some paper mills in Xinmi City have made good use of domestic old cartons to produce middle and low-end products such as boxboard and kraft noodle paper.
5. Domestic equipment manufacturers and chemical production and research institutes 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. There are also various types of deinking agents researched and developed by Fujian Papermaking Institute, Hangzhou Chemical Research Institute, Tianjin Institute of Light Industry (now renamed Tianjin University of Science and Technology) and other organizations.
In a word, waste paper recycling and waste paper utilization are the general trend of the development of the world's paper industry. In particular, Henan Province, where there is a shortage of timber resources and water pollution, deserves more attention. Whether it is a paper mill that has been shut down or is about to be shut down, a company that has used chemical pulping and papermaking to declare pollution control compliance, or a unit that has failed to make false test production due to inaccurate or blindly purchased waste paper, All should change their old ideas, set out from a practical point of view and establish confidence and confidence in using waste paper to make red. Adhering to implementation is a viable road for the survival of enterprises. To avoid mistakes. The following suggestions are proposed for reference.
1. When purchasing raw materials for waste paper, it should be strictly controlled. In particular, imported waste paper, in the current supply channels, unpredictable operating conditions, we must act with caution. It is necessary to conduct a thorough examination of the operating waste paper suppliers to understand the true conditions of the business units, the sources and historical sources of supply and sales, economic strength, and creditworthiness. Choose from reliable supply partners and agreements to supply them so as not to be deceived and cause undue economic losses.
2. For enterprises with considerable scale and strong financial strength and strong technical force, they can also import foreign existing de-inking technologies and equipment (including production lines) while purchasing foreign corrugated cardboard boxes, old magazine papers, and old newsprint papers. ), The production of high-quality recycled pulp, the replacement of wood pulp fiber, production of high-grade multi-variety products. It is not only beneficial to environmental governance but also can greatly increase profits. For enterprises that already have straw pulp alkali recovery, they can also use imported waste paper recycled pulp to add straw pulp and commercial wood pulp, and copy high-grade cultural articles in proportion. It can reduce the 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. Domestic and imported waste pulp with middle and high grade products. It will be possible to step out of the predicament of shortage of raw materials and difficulty in pollution control and turn to a virtuous circle.
4. Some paper-making enterprises that make use of waste paper, especially paper made from imported waste paper, are new attempts. Therefore, when purchasing waste paper, they should be classified and used in combination with their own equipment, technical strength, and production varieties. 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 imported production line will produce high-grade secondary cultural printing paper; the domestic waste paper purchased will produce low- and mid-range 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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Domestic use of waste paper and related recommendations
The use and disposal of waste paper in China in the 1970s was carried out by simple cooking, sizing, beating, and washing, and then used for copying or copying toilet paper and low-grade boxboard. By the 1980s, the recycling rate of waste paper had reached around 1/4. A few manufacturers were also able to produce deinked pulp. Some units also studied and discussed deinking equipment and deinking chemicals and achieved certain results. After entering the 1990s, some large and medium-sized papermaking enterprises in China have successively introduced deinking equipment and technologies (including production lines) from abroad, and made targeted improvements to waste paper deinking agents and waste paper deinking equipment. Innovation has enabled China's waste paper processing technology and equipment assembly levels to be fully developed.