Production method of low-odor formaldehyde-free medium-density fiberboard

• Main Authors: MA LU, CHEN XIAODONG, LI GUANGYU, LI MINQI, SHI ZHIFENG, LU MEILIAN, LI LUWEN
• Format: Patent
• Language: Chinese; English
• Published: 06.07.2021
• Subjects: MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUTORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTINGOF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOODFIBRES OR WOOD POWDER; NAILING OR STAPLING MACHINES IN GENERAL; PERFORMING OPERATIONS; REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; TRANSPORTING; WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL

The invention provides a production method of a low-odor formaldehyde-free medium-density fiberboard. The production method comprises the following steps that S1, low-odor wood is selected, and the wood is stored for a certain time; S2, the wood is subjected to hot grinding and cooking, wood fiber pulp is obtained after the wood is subjected to hot grinding and defibrating through a grinding machine, the wood fiber pulp and additives are mixed and conveyed to a drying system through a pulp spraying pipe to be dried to prepare dry fibers, and the additives comprise an adhesive, a waterproof material, dye and an odor removing agent, and the drying temperature of the fiber pulp is 100 DEG C-160 DEG C; S3, hot pressing is performed; S4, rough board maintenance is performed; and S5, sanding is carried out on a board, and then packaging is carried out. and S6, the board is stored. According to the production method, the formaldehyde-free fiberboard can effectively overcome the defect that an existing formaldehyde-f