What are the main factors affecting the quality of plywood production?

1, adhesive quality
The performance of synthetic resin adhesive used in adhesive, the coordination of each component and the mixing process are shown in several aspects. In recent years, many research works have been carried out on the various components and gluing processes of plywood in China, which not only saves many chemical raw materials, reduces the cost of products, and improves the performance of products, which is the performance of technological progress. In the production, only the synthetic resin used has excellent performance, sufficient bonding strength, reasonable allocation ratio of adhesive groups, stable performance of the modulated adhesive, suitable resin content and viscosity, and a long enough activity period to ensure normal operation and product indicators meet the requirements.
2. Board quality
The quality of veneer, especially its surface state, has great influence on the bonding strength. Veneer quality should be paid enough attention to in the wood section preparation and veneer rotary cutting processes, to do a good job of softening the wood, control the rotary cutting conditions to make the veneer indicators, and pay attention to the veneer moisture content and flatness.
3, plywood gluing
Before glue pressing, we should pay attention to grasp the sizing amount and slab aging two links. The amount of glue is too large, the cost is high; Moreover, the adhesive layer is too thick, the internal stress increases, and it is easy to penetrate the adhesive. The amount of glue is too small, which is not conducive to the infiltration of glue, and the glue layer will be incomplete. The aging time should be suitable and change reasonably with climate change. It is necessary to realize the whole core board, reduce the core board lamination and seam separation. It is necessary to pay attention to master the secondary and depressurization speed of rubber laminate, especially if there is more water in the slab.
In addition, the use of new technology, new equipment, such as the use of jet veneer dryer, core board sewing machine, core board leveling machine, to achieve sizing, billet formation, prepressing, hot pressing continuous operation, mechanized loading and unloading, fast closing hot press, etc., can accurately control the process conditions, so that product quality is more guaranteed.