The influence of glue shrinkage on sheet deformation
In the process of wood product processing, glue is an indispensable adhesive. However, in the process of board production, the shrinkage rate of glue will have a great impact on the stability of the board. The volatile substances in the glue will shrink during the curing process, causing tension and pressure on the surface of the board, thus causing deformation and deformation of the board.
Methods to reduce glue shrinkage
1. Choose low shrinkage glue
There are some low shrinkage glues on the market, which have a much lower shrinkage rate during the curing process than traditional glues. If these low shrinkage glues are used, the risk of sheet deformation can be effectively reduced.
2. Increase curing time
The glue will continue to shrink during the curing process. If the curing time is too short, the shrinkage of the glue cannot be fully suppressed. Therefore, increasing the curing time of the glue can effectively reduce the shrinkage of the glue, thereby reducing the risk of sheet deformation.
3. Use the right fixture
When making plates, the role of the clamp is very important. If the pressure of the clamp is uneven or the structure of the clamp is unreasonable, the plate will be deformed. Therefore, when choosing the clamp, the uniformity of the pressure and the rationality of the structure should be considered.
4. Ensure the moisture content of the board is balanced
The moisture content of the board is an important factor affecting the deformation of the board. If the moisture content of the board is unbalanced, it will cause a large deformation of the board during the curing process. Therefore, during the production process, the board should be dried to ensure the balance of the moisture content of the board.
Conclusion
The shrinkage rate of glue is an important factor affecting the deformation of the board. If the shrinkage rate of glue cannot be effectively controlled, it will cause the board to deform or crack. Therefore, during the production process, appropriate measures should be taken to reduce the shrinkage rate of glue, thereby reducing the risk of board deformation.
