Adjustment of thickness deviation in plywood hot press production
In the production of plywood, the hot press machine is a key equipment, and the thickness deviation of the plywood produced will directly affect the product quality. Therefore, precise adjustment of thickness deviation is crucial.
There are various reasons for thickness deviation. Firstly, poor flatness of the hot press plate is a common factor. If there is local deformation or wear on the hot pressing plate, it will cause uneven stress on different parts of the plywood during the hot pressing process, resulting in thickness deviation. For this, it is necessary to regularly check the flatness of the hot press plate. Once any problems are found, they should be repaired or replaced promptly through professional equipment.
Unstable pressure control can also cause thickness deviation. Excessive pressure from the hot press can cause the plywood to become too thin; If the pressure is too low, the plywood will be too thick. Operators should accurately set pressure parameters based on the material and specifications of the plywood, and ensure the stable operation of the pressure control system. Pressure sensors can be installed to monitor and provide real-time feedback data for timely adjustment.
The uneven moisture content of raw materials cannot be ignored. Raw materials with significant differences in moisture content experience varying degrees of shrinkage during hot pressing, resulting in thickness deviations. Strict testing and pre-treatment of raw materials are required before production to ensure uniform and consistent moisture content.
Through the above adjustment measures for hot pressed boards, pressure control, and raw material moisture content, the thickness deviation in the production of plywood hot press machines can be effectively reduced, product quality can be improved, and market competitiveness can be enhanced.
