A NEW METHOD OF PRODUCING COMPOSITE WOOD
In the Moscow State Forest University debugged technology bonding and veneering of wood composite materials, increasing the range of source material being bonded at which variants are possible without the use of glue curing agents while maintaining the quality characteristics of the adhesive.
It is known that the use of this method for wrapping bumazhnosloistym decorative plywood Fire resistant plastic surface does not provide a lasting bond. This is evident both in the edge zone of plastic material is peeled from the base (plywood PROTECTED) perimeter lined parts as well as in the formation of zones neprokleya lined inside surface resulting in local plastic swelling (blistering). Moreover, the presence of such defects is often detected not only at the completion of wrapping process step but also after the installation of such parts in a product or during its operation.
In the Moscow State Forest University have found a way to extend the functionality of the technology of wood composites by increasing the range of source material being bonded at which variants are possible without the use of glue curing agents for non-worsening of the quality characteristics of the adhesive.
This ensures that in the conventional technique of manufacturing wood composites comprising forming an adhesive layer between the surfaces to be bonded and applying pressure on the glued surfaces, is used as a polyvinyl acetate adhesive dispersion меламиномочевиноформальдегидной modified resin, wherein the ratio of polyvinyl acetate dispersion and resin is 2:1 меламиномочевиноформальдегидной and additionally introduced into the adhesive curing. This adhesive is applied without the use of a hardener, and the substrates are used as flame retardancy plywood and plastic, e.g., decorative bumazhnosloisty. As the substrates used sheets of plywood Fire resistant and sliced veneer, such as fine wood.
In addition, this technology can be successfully used for wrapping Fire resistant plywood veneer, such as fine wood.
Thus, the new technology can extend the range of the substrates in sufficient bond strength, and allows the use of an adhesive composition without hardener, the main component of which is a weak organic acid (such as formic acid or oxalic acid). Therefore, its implementation will help to improve the sanitary conditions in industrial environments, since the treatment with acids requires compliance with special security measures.
Contact information:
141005, Moscow region. Mytischi-5, MSFU
