Evaluation of the Operational Characteristics of Modified Synthetic Resins and Plywood on Their Basis

The main operational characteristics of adhesive compositions based on phenol–formaldehyde and melamine–carbamide–formaldehyde resins with such modifiers as pectol, technical lignosulfonates, and dolomite powder are investigated. The experiments show that addition of the modifiers improves physicochemical characteristics of the adhesives, increases the strength characteristics of plywood on their basis, and decreases the content of free formaldehyde. It is possible to decrease the assembly time of the products in molding machines when using modified adhesives, which increases the performance of plywood production.