Classification of formaldehyde-free boards

1. Adsorption-type Formaldehyde-removing Board

Principle: Adding adsorption-capable substances, such as activated carbon, diatomaceous earth, or nanomaterials, to the board utilizes their porous structure to adsorb formaldehyde molecules from the air.

Representative Products: Some brands add an activated carbon layer to the surface or interior of the board, claiming it can "capture" formaldehyde.

2. Decomposition-type Formaldehyde-removing Board

Principle: By adding photocatalysts (such as titanium dioxide TiO₂) or chemical catalysts, formaldehyde is decomposed into harmless substances (such as water and carbon dioxide) under specific conditions (such as light or air circulation).

Representative Products: Some high-end formaldehyde-removing boards claim to use photocatalytic technology and require the use of ultraviolet lamps.

3. Low-emission Formaldehyde-removing Board

Principle: Optimizing the adhesive formula to reduce formaldehyde release (such as using formaldehyde-free or low-formaldehyde adhesives), controlling pollution at the source, and possibly supplemented by surface sealing technology.

Representative Products: Eco-boards using MDI (diphenylmethane diisocyanate) formaldehyde-free adhesive.

4. Composite Functional Formaldehyde-Removing Board

Principle: Combining adsorption, decomposition, and low-release technologies to create multiple purification effects.

Representative Products: "All-in-One Formaldehyde-Removing Boards" launched by some high-end brands on the market.

From a material perspective, formaldehyde-removing boards are still a type of engineered wood product, with their base material mostly being wood fiber or particles. The difference lies in the addition of so-called "formaldehyde-removing" technology in the production process. Different manufacturers may have different definitions and implementation methods for formaldehyde-removing boards, resulting in varying performance and effects.