Recycling waste paper to protect forest resources

2022-07-03
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Using waste paper to recycle and protect forest resources

what is the average daily amount of waste paper in the world? No statistics, but a lot. As we all know, the main raw material of papermaking is wood. About 20 trees aged 20 to 40 years need to be cut down to manufacture 1 ton of paper. About 25% of the world's commercial wood is used for paper making

scientists from the International Center for forest research pointed out that the rate of disappearance of tropical rain forests has increased 10 times in the past 10 years. The paper industry consumes 60million cubic meters of wood every year, which is three times the sustainable development capacity of trees. At present, 90% of the raw materials used in the paper industry come from natural forests

as there are fewer and fewer forest resources in the world, now countries all over the world attach great importance to the recycling of waste paper. Xingda foamed plastics has successfully carried out a 30m3 large-scale experiment. All kinds of waste paper and waste wood discarded in the garbage heap have begun to become cheap paper-making raw materials. According to expert estimates, one ton of office waste paper can produce 0.8 tons of recycled paper. Scientists call it the "fourth forest"

recycling waste paper for papermaking can not only protect natural resources and reduce environmental pollution, but also save 23 cubic meters of wood, 400 kilograms of coal, 400 kilowatt hours of electricity and 300 tons of water per ton of paper. Therefore, even countries with rich forest resources attach great importance to waste paper recycling. The recovery rate of waste paper in Japan is over 78%; 83% in Germany; More than 100 million tons in the United States; Finland is one of the major paper producers in the world. The national waste paper recovery rate in Finland has reached 74% and the per capita waste paper recovery is 143 kg

data show that China has become a big country in paper production, consumption and import. Last year, the output and consumption of paper and paperboard ranked second in the world, second only to the United States. However, China is a Shaolin country, and the forest coverage rate is 10% lower than the world average level. Forest coverage is only 16.55%, far below the world average of 27%. Since the implementation of the natural forest protection project in 1998, the domestic timber harvesting has been limited, and the domestic forest has decreased by 1.1% annually. It is predicted that the demand gap for commercial timber in China will reach 70million cubic meters in 2005

after decades of efforts, waste paper recycling in China has made great progress, but there is still a big gap compared with Japan, the United States and other countries. The experimental machine has the functions of automatic pendulum taking, pendulum placing, impact, sample sending and data recording. At present, the recovery rate of waste paper in Guangdong Province is about 40%, which is already high in China. Therefore, the experts suggest that the relevant departments of China should formulate a set of waste paper recycling laws and regulations in line with China's national conditions and international standards as soon as possible, and strengthen the sorting management, utilization and classification standards of domestic waste paper as soon as possible. This can not only alleviate the contradiction between the large paper-making country and the lack of forest resources, but also save a lot of foreign exchange for the country and reduce the production cost of enterprises

from this point of view, we really should work hard on the structure of the fixture of the tensile testing machine for waste paper recycling

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