ZONLE Solid Core Panel: Honeycomb Structure, A2 Fire Resistance, ENF Environmental Protection Specs | Door Core Material

Core Design: Honeycomb Compartment Structure

1. Enhanced Sound Insulation & Noise Reduction: The independent honeycomb units split environmental noise into separate compartments to prevent large-area penetration; meanwhile, the hollow cavities reflect and absorb sound waves, reducing sound energy. According to data from Beijing Building Materials Inspection and Research Institute (a national testing institution), 45mm-thick door leaves filled with this panel achieve a 2-decibel higher noise reduction effect compared to those with traditional bridge-hole mechanical panels, effectively blocking noise between indoor and outdoor spaces to create a quieter home environment.
2. Optimized Thermal Insulation: The hollow structure of the honeycomb reduces the panel’s overall density, forming a natural "air insulation layer". With poor air flow in closed honeycomb compartments, heat transfer efficiency is significantly lowered. Test data shows the panel has a thermal conductivity of only 1.5W/(㎡·K) and reaches Grade 8 thermal insulation performance, reducing indoor-outdoor temperature exchange—minimizing heat loss in winter and external heat entry in summer, indirectly improving energy efficiency of the home environment.

1. Balanced Structural Stability & Lightweight: The hexagonal three-dimensional support of honeycomb units evenly distributes external forces (e.g., extrusion, impact) across the entire panel to avoid local deformation. At the same time, the hollow structure reduces material usage: while ensuring a compressive strength of 0.48MPa (higher than national standards), it lowers the overall weight of the door leaf. This not only facilitates installation and daily use but also reduces the load on door frames, extending the overall service life of wooden doors.
2. Auxiliary Moisture & Environmental Protection: Although the panel’s moisture resistance mainly relies on its inorganic materials, the closed honeycomb compartments further reduce moisture penetration paths—independent chambers prevent moisture diffusion inside the panel, which, combined with the material’s low water absorption (no expansion or shrinkage), enhances moisture resistance. Additionally, the structure requires little adhesive filling, working in synergy with the panel’s inorganic materials (with ultra-low formaldehyde emission) to further ensure environmental safety and reduce the risk of harmful substance release.

Functional Features

1. Stability & Moisture Resistance

2. Flame Retardancy & Heat Insulation

• Fire Resistance Performance: Primarily made of non-combustible inorganic mineral materials, the panel has a total heat value of only 2.7MJ/kg. Its fire growth rate index is 84W/S, and total heat release within 600 seconds is 1.6MJ—both far below national standards—achieving Grade A2 combustion performance (a high national fire safety rating).
• Heat Insulation Performance: As mentioned earlier, its honeycomb compartment structure ensures low density and a thermal conductivity of 1.5W/(㎡·K), reaching Grade 8 thermal insulation. This not only reduces heat transfer but also helps improve fire insulation effects, minimizing damage from accidental fires to extend the panel’s service life.

3. Safety & Environmental Protection

• Formaldehyde Emission: Tested by national institutions, the panel’s formaldehyde emission is 0.012mg/m³, which is far lower than the new national ENF level standard (0.025mg/m³), fully meeting high environmental protection requirements.
• Smoke Toxicity: Its smoke toxicity meets the national Standard Safety Level 2 (ZA2), ensuring minimal harmful smoke release in case of fire, further enhancing safety.

4. UV Resistance & Service Life

• UV Resistance: The panel’s inorganic material composition (with high chemical bond energy in molecular structures) makes it resistant to UV radiation—UV energy cannot easily break its molecular chains, preventing problems like fading, chalking, or reduced strength under UV exposure. The honeycomb structure also provides partial UV blocking and reflection, further reducing UV impact on internal materials, so UV irradiation has little effect on its service life.
• Service Life: Currently, there is no official data on the panel’s exact service life. However, its excellent stability (no expansion/shrinkage), high compressive strength, moisture resistance, UV resistance, and flame retardancy ensure slow performance degradation under normal use. With proper use and maintenance, its service life is expected to reach 10 years or more, though it may be affected by factors like usage frequency and environment.

Summary of ZONLE Solid Core Panel Advantages

As a high-performance composite door core filling material under ZONLE Wooden Door, ZONLE Solid Core Panel stands out in the market with its all-round advantages, solving key pain points of traditional door core materials. Its honeycomb compartment structure is the core design highlight—while enhancing sound insulation (2dB higher than bridge-hole mechanical panels) and thermal insulation (Grade 8, thermal conductivity 1.5W/(㎡·K)), it achieves a balance of high stability (compressive strength 0.48MPa, exceeding national standards) and lightweight, reducing door frame load and extending door service life.

In terms of practical performance, it shows excellent adaptability: inorganic material composition ensures low water absorption (no expansion or shrinkage) for strong moisture resistance, suitable for various regional environments; A2-grade fire resistance (total heat value 2.7MJ/kg, 600S total heat release 1.6MJ) and ZA2-level smoke toxicity meet strict safety requirements; 0.012mg/m³ formaldehyde emission (far below ENF level) realizes true environmental protection, making it ideal for home, commercial and other scenarios.

Inquiry Guide

If you are looking for a door core material that integrates "sound insulation, fire resistance, environmental protection and durability", or need to know more about ZONLE Solid Core Panel—such as detailed performance parameters, bulk procurement quotes, application cases in different scenarios, or customization solutions for special door types—please feel free to contact us. Our professional team will provide you with one-on-one consulting services and tailored product solutions to help you upgrade your wooden door products and enhance market competitiveness. We will reply to you within 24 working hours and provide you with comprehensive support.