Flame-Retardant PP Honeycomb Board Compliant with ASTM E648 Class I
Fire safety has become a critical requirement in industrial, logistics, construction, and public-area applications. Materials used in these environments must not only be lightweight and durable, but also comply with increasingly strict flame-retardant regulations.
Polyreflex flame-retardant PP honeycomb boards are engineered to comply with ASTM E648-17a Class I, providing reliable fire performance while maintaining excellent mechanical strength and lightweight characteristics.
Why Flame Retardancy Matters in Modern Applications
In public buildings, commercial spaces, industrial facilities, and transportation infrastructure, fire hazards pose serious risks to both safety and property. Traditional plastic boards may continue burning, spread flames rapidly, or generate dense smoke once ignited.
Flame-retardant PP honeycomb boards help reduce these risks by limiting flame spread and improving overall fire safety performance. As fire regulations become more stringent worldwide, the use of materials compliant with recognized standards such as ASTM E648 Class I has become essential in many projects.
PP honeycomb board
Fabric-backed PP bubble board
What Is ASTM E648 Class I?
ASTM E648, also known as the Radiant Panel Test, evaluates the flame spread characteristics of materials exposed to radiant heat, particularly for applications in public and high-traffic areas.
Materials classified as Class I under ASTM E648 demonstrate low flame spread performance and are suitable for use in environments where strict fire safety standards apply, such as public buildings, transportation hubs, and commercial facilities.
Polyreflex Flame-Retardant PP Honeycomb Board Overview
Polyreflex flame-retardant PP honeycomb boards are manufactured using a lightweight polypropylene honeycomb core combined with durable PP surface layers. Flame-retardant performance is achieved through a specially formulated material system integrated during the production process, ensuring consistent fire resistance throughout the entire board structure.
All standard PP honeycomb board specifications produced by Polyreflex can be manufactured in flame-retardant versions, allowing customers to meet fire safety requirements without sacrificing design flexibility. Board thickness, weight, dimensions, and colors can be customized according to application needs. For detailed specifications and technical recommendations, customers are welcome to contact Polyreflex directly.
This structure provides an excellent balance of lightweight construction, rigidity, and enhanced fire safety for a wide range of applications.
Flame-Retardant Performance and Test Behavior
During internal flame testing, a flame source was applied directly to the corner of the PP honeycomb board for a sustained period.
Under direct flame exposure, the material softened and melted without generating black smoke. Once the flame source was removed, the board self-extinguished immediately, with no sustained glowing or secondary ignition. Any molten drips did not ignite.
This behavior is consistent with the expected performance of ASTM E648 Class I flame-retardant materials.
Key Advantages of Flame-Retardant PP Honeycomb Boards
In addition to flame-retardant performance, Polyreflex PP honeycomb boards offer several functional advantages:
Lightweight structure for easy handling and reduced transportation costs High rigidity and impact resistance Moisture resistance and chemical stability Easy processing, including cutting, CNC machining, and thermoforming Long service life and recyclability
These properties make flame-retardant PP honeycomb boards suitable for demanding industrial and commercial environments.
Typical Applications of ASTM E648 Class I PP Honeycomb Boards
Polyreflex flame-retardant PP honeycomb boards are designed for applications where fire safety, lightweight construction, and mechanical protection are required.
Industrial trays and pallets
Used for material handling in industrial environments, the boards provide strong structural support and impact resistance while improving fire safety in factories and warehouses.
Reusable transport and logistics boxes
The lightweight yet rigid structure makes these boards ideal for reusable logistics boxes and containers. ASTM E648 Class I compliance enhances safety in logistics centers and distribution hubs.
Flight cases and equipment protection cases
PP honeycomb boards are widely used as panel materials for flight cases and professional equipment cases, offering strength, reduced weight, and compliance with fire safety requirements for exhibitions and public venues.
Exhibition displays and public-area installations
Commonly used for display structures, temporary partitions, and interior panels in exhibition halls, shopping centers, and transportation hubs where strict fire regulations apply.
Transportation and infrastructure interior panels
Suitable for interior applications in transportation and infrastructure projects that require durability, lightweight performance, and flame-retardant properties.
Temporary floor and wall protection during construction and renovation
Flame-retardant PP honeycomb boards are increasingly used as temporary protection for floors and walls during building renovation and interior decoration. Installed over finished surfaces or against walls, they help prevent damage from impact, scratches, and heavy foot traffic. Their reusability and fire safety compliance make them especially suitable for commercial buildings and public spaces.
Warehouse trolley
Recyclable packaging box
Construction site
Why Choose Polyreflex – Manufacturing Capability & Technical Support
Polyreflex is a professional manufacturer of PP honeycomb boards in China, supplying customers worldwide with lightweight thermoplastic sheet solutions.
We offer stable production capacity and strict quality control to ensure consistent performance, including reliable flame-retardant behavior compliant with ASTM E648 Class I. All standard PP honeycomb board specifications can be produced in flame-retardant versions to meet different project requirements.
Polyreflex supports extensive customization options, including board thickness, weight, dimensions, colors, and surface configurations. Based on specific applications—such as logistics packaging, equipment cases, public-area installations, or temporary floor and wall protection—we provide application-oriented material recommendations.
To support customer evaluation and project development, Polyreflex offers sample support, technical consultation, and pre-production assistance. By combining manufacturing expertise with responsive technical support, Polyreflex serves as a reliable long-term partner for flame-retardant PP honeycomb board solutions.
White PP honeycomb board
PP honeycomb board Production
Conclusion
Polyreflex flame-retardant PP honeycomb boards compliant with ASTM E648 Class I provide a reliable solution for applications where fire safety, lightweight design, and mechanical strength are equally important.
They are well suited for industrial, logistics, construction, and public-area projects requiring high safety standards and long-term performance.
For pricing, technical details, or free samples, please feel free to contact us.
