In recent years, formaldehyde emissions from flooring products have remained a significant challenge for major flooring companies. The term “zero formaldehyde†often seen on product labels may seem promising, but industry experts clarify that it doesn’t mean the material is entirely free of formaldehyde. Instead, it refers to a process where no additional formaldehyde is added during manufacturing, typically using natural materials as a base.
The public’s growing concern over indoor air quality has led many flooring and building material manufacturers to promote their products as “zero formaldehyde†to attract environmentally conscious consumers. However, the reality is more complex. Experts explain that even natural wood contains trace amounts of formaldehyde, which means it's nearly impossible to eliminate it completely after processing into floorboards.
One company shared an example of its product, which achieved a “zero addition†status. Natural wood itself contains about 0.1–0.2 mg/L of formaldehyde, and their product tested at 0.1 mg/L, demonstrating how close they can get to eliminating added formaldehyde.
To address this issue, some manufacturers are turning to alternative adhesives. For instance, one flooring brand uses corn starch-based adhesives treated with a composite denaturation process, creating a starch-based API (isocyanate) adhesive. Compared to traditional chemical glues, this type of adhesive significantly reduces formaldehyde emissions and doesn't increase the formaldehyde content when applied to wood panels.
Another innovative approach comes from Zhongshan, where a smart microwave formaldehyde reduction system has gained attention. This equipment uses microwave electromagnetic fields to accelerate the breakdown of formaldehyde molecules in wood panels. According to Xiaozheng Building Materials Co., Ltd., the average processing time for large panels is under two minutes, with a formaldehyde reduction rate ranging between 30% and 70%. The technology has been patented and is now being used in production.
In addition to new technologies, replacing old formaldehyde-containing materials with eco-friendly alternatives is also gaining traction. Diatom mud, for example, has emerged as a popular choice. Containing diatomite, it has an exceptional adsorption capacity—its micropores are 5,000 to 6,000 times more than charcoal. It effectively absorbs harmful substances like formaldehyde and serves as a sustainable alternative to paints and wallpapers.
Despite these advancements, the challenge of long-term formaldehyde release remains. Industry sources note that formaldehyde from furniture and flooring can persist for over a decade. While current solutions offer promise, they need to be thoroughly tested and proven effective to truly make an impact on the market. As the industry continues to evolve, innovation in both materials and technology will play a crucial role in reducing indoor pollution and improving air quality.
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