Water
Covers 71% of the Earth's surface
Makes up 70%-75% of the human body
How much does it constitute in wood panels?
In recent years, improper moisture content in wood panels has led to frequent occurrences of furniture deformation and cracking in various regions. What exactly is moisture content in wood panels, and why does it have such a significant impact on furniture?
Just like the human body, wood contains a certain proportion of water internally. This moisture content can change due to the surrounding environmental humidity and can expand or contract with temperature changes. Variations in moisture content can affect the quality of the wood.
Under normal circumstances, wood panels or wood products contain a certain amount of moisture. In China, the moisture content of wood is defined as the percentage of the weight of the water contained in the wood to the weight of the dried wood. The formula for calculating moisture content is as follows:
[ W=(Gs-Ggo)/Ggox100 %]
Absolute moisture content of wood = [ \frac{(Weight of wet wood - Weight of absolutely dry wood)}{Weight of absolutely dry wood} \times 100% ]
During everyday use of furniture, issues such as deformation, cracking, warping, and bulging may occur. These are largely caused by the moisture content in the wood panels and their products being too high or too low. Therefore, only when the moisture content in the wood panels reaches a balanced state can these issues be effectively avoided.
To address the problems caused by unstable moisture content in wood panels, extensive research in the wood panel industry has identified several key factors:
When the solid content of the adhesive is low, its liquid content will be high, resulting in a higher overall moisture content in the wood panel.
Improper storage of wood panels and fluctuations in the moisture content of raw materials directly cause changes in the moisture content of the wood panels.
During production, factors such as hot pressing time, temperature, and ventilation conditions all affect the moisture content of the wood panels.
Due to differences in atmospheric humidity, the equilibrium moisture content of wood varies by region. For example, the average annual equilibrium moisture content in Guangzhou is 15.1%, while in Beijing it is 11.4%. Wood panels dried to 11% are suitable for use in Beijing but will absorb moisture and expand if used in Guangzhou. Therefore, the equilibrium moisture content of wood is of great significance in production. The moisture content of materials used for furniture, doors, windows, and interior decoration must be dried to below the equilibrium moisture content of the usage area to prevent cracking and deformation of wood products.
Fuqing LVL, with its gold-standard craftsmanship—breathing drying—precisely controls hot pressing time and temperature according to the atmospheric humidity of different regions to ensure the product reaches the optimal moisture content, reducing the risk of cracking and deformation.
As the market evolves, Fuqing LVL adheres to a long-term mindset of craftsmanship excellence, rigorously controlling moisture content at every stage from material selection and production to transportation. Fuqing LVL will continue to push forward as a pioneer, conducting in-depth research to provide customers with high-quality products.
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