Developing papermaking resources and developing pa

2022-05-19
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Developing papermaking resources and developing packaging paperboard

[Abstract] the supply of packaging paper and paperboard is in short supply, which leads to the paper packaging products can not meet the market demand and can not adapt to the development of national economy. Therefore, we must vigorously develop packaging paper and paperboard. To speed up the development of packaging paper and paperboard, the key is to ensure the supply of papermaking raw materials. This paper discusses how to start and make good use of wood resources, make full use of waste paper resources and moderately develop non wood fiber raw materials

I. China's paper packaging products can not meet the market demand

the progress of science and technology in today's world has brought the increasing modernization and scientization of commodity packaging, which has greatly promoted the development of the world packaging industry. Since the reform and opening up, China's packaging industry has developed rapidly, especially in recent years. In 1996, the total output value of China's packaging industry reached 126 billion yuan, an increase of 177.53% over 1990 and an average annual increase of 18.55%. Nevertheless, China's packaging industry still can not meet the needs of the national economy and the international market. There is a large gap in the quality of packaging raw and auxiliary materials, the grade of packaging products, and the packaging level of export commodities, resulting in the packaging product structure can not meet the market demand

especially with the development of production and the enrichment of social life, the supply of high-grade and high-quality paper packaging products is in short supply, and the demand for paper, advertising paper, cultural paper, decorative material paper and packaging paper is increasing day by day. According to the preliminary prediction, the total consumption of paper in China will reach more than 1.1 million tons by 2000, with an average annual increase of 7.2%; The national consumption of book printing paper will reach 26 million tons, with an average annual increase of 5%; The consumption of general printing and writing paper will reach 4.2 million tons, and the domestic paper will increase at the rate of 8% to more than 1.8 million tons. In the packaging paper, such as composite packaging paper, coating paper, coating paper, high gloss cardboard, the demand gap is widening day by day. The development of advertising industry has increased the consumption of coated paper, and the high-grade commodity packaging and decoration has increased the consumption of Coated Whiteboard. Therefore, China's paper packaging products should adjust the product structure according to the market demand, appropriately develop offset paper, offset book paper, high-grade coated whiteboard, medium and high-grade household paper, information paper, food packaging, kraft linerboard and other short-term products, and focus on the development of relief paper, offset printing coated paper (i.e. coated paper), whiteboard, cigarette paper and other upgraded products, Make the product structure of paper packaging products adapt to the high-grade demand of the market

According to the prediction of FAO, the annual average growth rate of the world's paper and paperboard production capacity was 2%, increasing the output by 29 million tons, of which the growth rate of paper was 1.6%, increasing by 3 million tons; Printing and writing paper increased by 10 million tons, with a growth rate of 2.3%; Other paper and paperboard increased by 16 million tons, with a growth rate of 1.9%. Due to the strong economic development momentum and low labor costs in most Asian countries, the average annual growth rate of paper and paperboard is%

regardless of the announced new global paper output, this year's paper supply will increase by 3.5% - 4%, while consumer demand is estimated to increase by only 1% - 2%. The global paper products are oversupplied, and the average price will fall slightly. However, the economic growth of the United States and Asia this year will lead to the prosperity of the paper products market, and the market core of products will be transferred from Europe and the United States to Asia

according to the forecast and analysis of relevant macro departments, the demand for paper in the Asian market increases by 4% - 5% every year, while the demand growth rate in China reaches 6% - 7%. After 2000, the demand for paper and paperboard in China will surpass Japan and become the largest paper country in Asia. At present, China's per capita paper consumption is 20 kg, which is estimated to increase to 30 kg in five years. China's population will increase by 10 million a year. By 2002, the population will reach 1.3 billion. The demand for paper and paperboard in China will reach 39 million tons in five years

the planning and Development Department of the Light Industry Federation has formulated the overall plan for the development of young industries in the next 15 years. The development plan of the paper industry is to increase the production capacity of paper and paperboard to 30 million tons/year during the Ninth Five Year Plan period and 40 million tons/year in 2010. The actual output of paper and paperboard in China in is shown in Table 1

as can be seen from table 1, the output of paper and paperboard in China has increased year by year, with an annual average growth of 8.92%. If the output of paper and paperboard increased by 8.92% annually on the basis of 21 million tons in 1995, the total output will be about 38 million tons by 2002. Although the paper industry plan can be completed, it still can not fully meet the market demand, and the gap is about 800000 tons

paper and paperboard are the basis of paper packaging products. In the total amount of paper and paperboard, packaging paper and paperboard account for about half. China's paper packaging products can not meet the market demand. The main reason is that the demand for the raw materials of paper packaging products - packaging paper and paperboard is increasing, and the supply is in short supply. Although it accounts for about 70% of the total amount of paper and paperboard in China, there is a gap because the actual output of paper and paperboard in China can not meet the market demand, resulting in the shortage of packaging paper and paperboard

according to the foreign trade department, paperboard is used as the packaging material for% of China's export products, of which 90% depends on import. Due to the poor quality of domestic products, China's pulp and paper imports have increased rapidly in recent years. See Table 2 for relevant indicators

it can be seen from table 2 that China imported 824000 tons of pulp in 1995, an increase of 59.57% over 1993 and an average annual increase of 26.32%. The import of waste paper also increased from 603700 tons in 1993 to 906000 tons in 1995, with a total increase of 5%. In terms of personnel training, it increased by 0.07% and an average annual increase of 22.5%. In 1995, the total import volume of paper and paperboard reached 3.029 million tons. Although it was lower than that in 1994, it was still 25.83% higher than that in 1993, with an average annual growth of 12.17%. To this end, the state consumed a lot of foreign exchange. In 1996 alone, it used 1.31 billion yuan of foreign exchange for the import of pulp and paper

it can be seen that the variety and quality of packaging paper and paperboard in China can not meet the needs of national economic development. The supply of high-grade and high-quality products is in short supply. The state needs to spend a lot of foreign exchange to import high-grade paper and paperboard every year. At the same time, a considerable number of low-grade products are unsalable. Therefore, the application categories and product grades of packaging paper and paperboard in China need to be improved

III. actively develop papermaking raw material resources and vigorously develop packaging paper and paperboard

packaging paper and paperboard should meet the needs of national economic development, their application categories and product grades need to be improved, and their development must be accelerated. To vigorously develop packaging paper and paperboard, it is very important to ensure the supply of papermaking raw materials and actively develop papermaking raw material resources

(I) develop and make good use of wood resources and improve the proportion of wood pulp and papermaking

over the years, China's paper industry mainly uses non wood fiber as paper raw materials, and wood pulp accounts for less than 20% of the whole pulp industry. However, most countries in the world mainly use wood as paper raw materials, and the world's non wood fiber pulp products account for only 7.5%, of which China's non wood fiber pulp products account for 62.4%. This simple operation and raw material structure in China will affect the quality of paper and paperboard products and hinder the development of high-grade and high-quality products and the development of the whole paper industry

in order to make the paper industry develop healthily, more wood pulp should be used. The raw material of wood pulp comes from wood, while China's forest coverage is only 13.9% of the land area, the area of forest resources is 128.63 million hectares, and the volume of living trees is 10.868 billion cubic meters. The total amount of pulp and wood resources is insufficient, which requires us to not only improve the pulp yield in the production process, strive to improve the utilization rate of forest resources and save existing wood resources, but also develop new resources. In the long run, we should vigorously develop forestry and accelerate the cultivation of fast-growing and high-yield forest bases suitable for papermaking, especially eucalyptus, poplar, birch and other broad-leaved trees with short production cycle and high papermaking quality

China's forests are mainly distributed in the northeast, Southeast, South and West, and are mainly managed by the Ministry of forestry. In the process of cutting, timber making, processing and tending in these forest areas, tens of millions of cubic meters of residues (including needles and broad leaves) can not be utilized every year. If a forest paper joint enterprise is established, these abandoned residues can be fully utilized, and the utilization rate of forest resources can reach more than 90%. Through various efforts, the proportion of wood pulp in papermaking raw materials in China will increase to 18% by 2000

(II) make full use of waste paper resources and improve the recovery and utilization rate of waste paper

waste paper is a renewable resource of the paper industry. Making full use of waste paper is the only way to develop the paper industry. For China with insufficient wood resources, waste paper recycling is particularly important. According to the prediction of the United Nations Food and Agriculture Organization, the proportion of waste pulp and papermaking in the total pulp in the world in 1995 was 32%, which will increase to 34.4% by 2000. In fact, with the development of paper industry, the utilization rate of waste paper is increasing day by day. In 1993, the total utilization rate of waste paper in the world was 93.263 million tons, and the total utilization rate of waste paper was 37.1% (the proportion of waste pulp in the total pulp); In 1994, the total utilization was 135 million tons, and 108 million tons of recycled pulp can be made according to the pulp forming rate of 80%. The utilization rate of waste paper in the world has increased from 30% in 1989 to 40% at present, and is expected to reach 50% by 2000. Table 3 shows the statistical data of waste paper recycling and utilization in 11 major countries and regions in the world in 1994

as can be seen from table 3, the recycling and utilization of waste paper in the United States ranks first in the world, accounting for 34.13% and 26.58% respectively. According to the statistics of the American Forest Paper Association, there are 145 waste paper recycling manufacturers in the United States. In 1995, the recycling volume of waste paper in the United States was nearly 40 million tons, of which more than 20 million tons were used as domestic papermaking raw materials and more than 10 million tons were used for export. The weight of waste corrugated boxes (OCC) accounted for a large proportion. The recovery rate of waste paper in Germany is as high as 60.8/%, while that in China is only 22%, far lower than the world level of 38.9%. The utilization rate of waste paper in Taiwan Province is 100%, while that in mainland China is only 28.3%. Compared with 38.7% of the world's waste paper utilization rate, the gap is not small. China's paper industry has developed rapidly. The annual output of paper and paperboard is increasing at an average annual rate of 8.92%. The recycling of waste paper has more potential, which is very beneficial to improve the quality level of paper and paperboard and reduce environmental pollution

make rational use of imported waste paper and produce high-quality Kraft linerboard by using 20% - 30% imported wood pulp, 30% - 40% straw pulp and 40% imported waste pulp, which can reach the foreign level. Pulp packaging material is suitable for goods of any shape and can effectively protect goods. More and more people use it to package industrial products, electronic equipment and all kinds of fragile goods. Pulp packaging materials are made of 100% waste paper, which can be completely reused and biodegradable. It can be seen that the recycling of waste paper is very important to the paper industry. According to a report of an American publication, the investment in building a paper mill using waste paper as raw material is 50% - 80% less than that in building a paper mill using raw pulp

(III) moderately develop non wood fiber raw materials to alleviate the shortage of papermaking raw materials

China is rich in cotton stalk resources, mainly distributed in Shandong, Shanxi, Henan, Jiangxi and other places, with an estimated annual output of more than 10 million tons. From the chemical composition and fiber morphology of cotton stalk, the cellulose content of cotton stalk is between 40% - 60%, the lignin content is between 16% - 22%, the cotton stalk skin accounts for about 30% - 35%, the pectin content is high, the average fiber length is 2.26% mm, the core fiber of cotton stalk is short, and the average length is 0.83 mm (broadleaf)Grips
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