04-04-2023 дата публикации
Номер: CN115890839A
Принадлежит:
The invention relates to a method for reducing the glue applying amount of polymerized isocyanate plywood, and belongs to the technical field of plywood preparation. The method comprises the following steps: (1) coating a wood surface cell micropore active anti-seepage agent on the surface of a wood veneer before drying the wood veneer with a certain water content; (2) then, drying the veneer coated with the wood cell viability seepage-proofing agent, so that the veneer is dried to reach the specified moisture content, and meanwhile, a layer of wood cell micropore sealing film with reaction activity is formed on the surface of the veneer; and (3) carrying out technological operations such as low-sizing-amount sizing of the pMDI glue, veneer assembly, slab hot pressing, edge cutting and plate forming, and finally forming the pMDI formaldehyde-free plywood. According to the method disclosed by the invention, the application amount of the high-price pMDI adhesive can be greatly reduced, so ...
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