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Moisture-proof technology and water-resistant adhesive for paper honeycomb products
Paper honeycomb products should have certain moisture-proof functions, but how to define the moisture-proof grade of paper honeycomb products, how to produce qualified moisture-proof products, and how to determine the moisture-proof and water-resistant properties of substrates are a series of deep-seated problems. Improve product quality, enhance product competitiveness and promote the development of the industry.
The advantages of cardboard products are very promising.
At present, the new structure honeycomb paperboard adopts the modern bionics principle, and uses kraft paper as raw material to be made by special techniques and equipment. Its characteristics: The bearing capacity of the 10mm thick honeycomb paperboard is 0.5 tons/m2, which is 2-10 times that of the five-layer corrugated board. The elasticity is good, because the density of the honeycomb honeycomb core structure is different, which makes the elastic range large and produces strong earthquake resistance. High strength, strong pressure resistance and folding resistance. The compressive strength of 10mm thick honeycomb paperboard is 2-75.6 times that of five-layer corrugated board; the flexural strength is twice the transverse strength of five-layer corrugated board, longitudinal 29.2 times. Lightweight, 1 square meter thicker than 5.1mm thick five-layer corrugated paper can make 1.44m2 of l0mm thick honeycomb paperboard. It weighs only 2/3 of corrugated board of the same specification and 1/3 of wood. The cost is low, because the honeycomb paperboard is less than the raw material of the corrugated paperboard, and the honeycomb paper core is produced by the low-cost kraft paper; the material cost is only 2/3 of the corrugated board and 1/3 of the wooden board. Due to macro-control and resource shortages, the paper industry and the packaging industry are constrained by the state's restrictions on timber deforestation. The supply of raw materials is in short supply. It is necessary to seek packaging materials based on paper and wood, and replace the traditional corrugated paper with new structural honeycomb paperboard that saves wood. The industrial policy of wood packaging has reached more than 70% in foreign countries. In response, the state has proposed to accelerate the development and promotion of honeycomb paperboard, and gradually replace some wood packaging. After more than 10 years of research and development, China's honeycomb paperboard production technology and market development continue to make progress. The domestic honeycomb paperboard production line has developed the fifth and sixth generation production special equipment. According to incomplete statistics, there are currently about 150 honeycomb paperboard equipment and product manufacturing enterprises in China. There are nearly 20 in Jiangsu Province and nearly 10 in Shanghai.
The packaging and labeling industry will become the "potential army" for the development of the European printing industry
It was learned from the World Printing Forum held in the Netherlands recently that the EU has 27 member states and 500 million permanent residents, with a total GDP of 1.2 trillion euros. According to relevant data in 2010, the EU has a total of 121,000 printing companies with 714,000 employees and an annual output value of 88 billion euros. At present, the overall development of the EU printing industry is showing an imbalance. According to statistics from 2010, the output value of the German printing industry ranks first in the region, followed by the United Kingdom, Italy, France, Spain, the Netherlands, Belgium, Sweden and so on. The number of printing companies declined from about 135,000 in 2007 to 122,000 in 2010; the number of employees has fallen, from about 960,000 in the peak of 2001 to 720,000 in 2010, down 25%; total output value It also fell from about 117 billion euros at the peak of 2008 to 88 billion euros in 2010, down 16%. According to relevant forecasts, the output value of the printing industry in the EU will also show a downward trend in 2013 and 2014.