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The reaction mechanism is very complicated. Traditionally, urea-formaldehyde resin adhesives have been prepared by an addition-condensation reaction using a weak alkali-weak acid-weak alkali process. With the rapid development of science and technology, the new technology of urea-formaldehyde resin glue production technology keeps pace with the times and continues to improve on the basis of the original tradition. [Urea-formaldehyde resin adhesives powder] is produced by spraying tower drying technology. The urea-formaldehyde resin powder produced by the new technology has good performance index, low production cost and low free aldehyde content. At present, due to the simple manufacturing, convenient use, low cost and good performance of urea-formaldehyde resin glue and rubber powder new technology, it has become the main rubber type for the production of wood-based panels in China, accounting for more than 90% of the rubber used for wood-based panels.