Plywood manufacturers have learned that the main reasons for plywood opening are the poor quality of the adhesive, such as deterioration, excessive moisture, high moisture content of the veneer, and poor surface quality; the gluing conditions are not well controlled, such as low heat pressing temperature or Part of the temperature is uneven, the pressure is insufficient, and the hot pressing time is too short, so that the adhesive layer is not fully cured; insufficient or too long aging time will also reduce the adhesive force.
Of course, the reason for the plywood problem has been inquired, and what needs to be done is to take the correct method to solve it.
a. Change the adhesive, choose a formula with less water content or add flour and soybean flour to absorb water;
b can improve the quality of the veneer, strictly control the moisture content of the veneer; adjust the hot pressing process, increase the hot pressing temperature, extend the hot pressing time, and appropriately increase the pressure;
c. Check the equipment regularly to ensure the precision of the rotary cutting machine, and check the steam path and steam supply of the hot plate. In short, in the process of application of plywood panels, you need to master the correct methods and follow certain common sense points to ensure outstanding effects after use.(桦木胶合板)