In recent years, China's wood-based panel industry has developed rapidly. In 2014, the output was 302.1233 million cubic meters, an increase of 11% year-on-year. However, with the rapid development of wood-based panel industry, indoor formaldehyde pollution has also become a serious problem affecting the health of residents.



Wang Ye, President of the Beijing Branch of the wood flooring circulation Professional Committee of the China wood and wood products Circulation Association, told the reporter that although the national and industrial standards have gradually tightened the requirements on the formaldehyde emission limit of wood-based panel products, the environmental protection level of the products has also transitioned from E2 level to E1 level. Some products have met the E1 level or even close to the E0 level formaldehyde limit requirements, but there are still different levels of formaldehyde problems.



In order to solve the problem of formaldehyde pollution, many experts and scholars at home and abroad have invested a lot of energy in research, applied for a series of formaldehyde free adhesive patents, and published a considerable number of research papers. However, the focus is only on "bonding strength" and "environmental protection indicators", while ignoring the two equally important indicators of "applicability" and "practicality" of adhesives, As a result, these formaldehyde free adhesives can not meet the requirements of large-scale production of wood-based panel industry.



Participating experts told reporters that the key technologies for large-scale production of formaldehyde free plywood have solved the problems of low production efficiency and high defective rate of formaldehyde free plywood. On this basis, a series of products such as "formaldehyde free plywood", "formaldehyde free Blockboard", "formaldehyde free multi-layer composite floor", "formaldehyde free plywood for wood structure cladding" have been developed. The raw materials and production and processing process conform to the principle of sustainable development, which can improve the environmental protection performance and product value of wood glued products, and provide a strong scientific and technological support for the traditional wood industry to achieve the goal of environmental protection and safety technology upgrading.



The national quality supervision and Inspection Center for wooden furniture and wood-based panel (Xuzhou) has tested that the formaldehyde emission of poplar plywood produced by this technology is 0.015mg/l, which is 1% of the national E1 standard, 1/33 of the E0 standard and 1/20 of the Japanese F4 standard. The produced Eucalyptus plywood was tested by the analysis and testing center of Guangzhou Institute of chemistry, Chinese Academy of Sciences. TVOC and formaldehyde emission were not detected.