To determine if honeycomb panels use formaldehyde-free adhesive, the key points are: Look for authoritative testing reports, carefully observe product details, and prioritize reliable brands. Let me break it down for you:
The most reliable basis: Check authoritative testing reports. Directly request the seller to provide a recent formaldehyde emission test report (such as CMA certification). This is the only objective standard. Pay close attention to:
Testing standards: Does it meet ENF level (≤0.025mg/m³) or E0 level (≤0.050mg/m³)? This is the gold standard for healthy homes.
Testing methods: Such as the "desiccant method" or "climate chamber method," and the results should be clearly labeled with numerical values.
Observe product details and workmanship.
Smell: New panels have no pungent odor (inferior adhesives may have an irritating odor).
Examine the Surface and Back Coating: High-quality panels use a coating process, ensuring a tight bond between the coating and the aluminum material. The back coating uses imported anti-rust coatings, guaranteeing no rust for over 20 years.
Inspect the Honeycomb Core: Tear open a sample and observe whether the amount of adhesive is uniform and appropriate. Excessive adhesive may indicate a lack of environmental friendliness.
Choosing a Brand and Understanding the Process:
Prioritize well-known brands. Their quality control and environmental standards are more reliable. They often use polyurethane environmentally friendly adhesives, which are non-toxic, odorless, and have strong resistance to high and low temperatures.
Understand the Adhesive Type:Formaldehyde-free adhesives usually refer to polyurethane adhesives or MDI eco-adhesives. However, note that MDI adhesives may release small amounts of xylene and have poor moisture resistance.
Quick Judgment and Precautions:
Beware of the hype surrounding the "formaldehyde-free" concept: Honeycomb panels themselves use a small amount of adhesive, and the formaldehyde release is usually negligible at any price point. The high price is for the "formaldehyde-free" label.
Focus on the balance between environmental protection and durability: Boards made with polyurethane environmentally friendly adhesives have adhesive strength and durability that can withstand harsh environmental tests.