One、What are the causes of the surface cracking of plywood?
Several factors can cause plywood to crack, including: high moisture content in individual panels, uneven drying, excessive adhesive application, rapid pressure reduction, excessively high pressing temperature, and insufficient pressing time. In other words, these issues stem from: improper design, inappropriate material selection, and a lack of attention to detail during construction.
Common reasons for plywood cracking include: Plywood absorbing moisture!
After plywood absorbs moisture, the adhesive binder softens, reducing the bonding strength, and uneven moisture content within the plywood. Uneven water evaporation and uneven thermal expansion and contraction also lead to cracking.
Two. What to do if plywood cracks?
Due to the inherent properties of wood, plywood is susceptible to cracking and warping due to external factors such as temperature and humidity. However, this does not affect the corrosion resistance and structural strength of the board.
If cracks have already formed, minor cracks can be repaired with professional adhesive. However, for severe cracks, replacement is the only option.
In subsequent protection, special maintenance coatings are required to delay cracking.
One simple method for dealing with cracking in plywood is to minimize the wood's contact with moisture. Applying a coat of paint to the plywood can prevent water from entering, and waterproof agents can also be used to protect the plywood. Waterproof agents can reduce the wood's water absorption rate.