Fire-Retardant Paper Overlay for Decorative Carrier Plates

The patent applies composite materials by combining a carrier board with a fire-retardant impregnated paper overlay. The paper is impregnated with fire-retardant resins (such as ammonium polyphosphate, melamine, or borax) creating a composite structure that maintains both aesthetic flexibility and fire safety. This composite approach allows the decorative surface to meet fire class A2 or A2-S1 DO standards while preserving design versatility through digital printing.

The patent changes the chemical parameters of the paper overlay by impregnating it with fire-retardant resins and additives. This chemical modification alters the paper's combustion properties, reducing its calorific value and preventing it from contributing to fire spread. The impregnation process changes the paper's physical and chemical characteristics to achieve non-combustibility while maintaining its decorative function.

The patent converts the harmful combustibility of paper into a beneficial fire-retardant property through impregnation with fire-retardant resins. The paper, which naturally burns easily, is treated with chemical additives that prevent combustion or significantly reduce flame spread. This transforms the paper from a fire hazard into a fire-safe decorative material that meets strict fire classification standards.

The patent changes the combustion parameters of the paper by introducing fire-retardant chemicals during impregnation. The resin saturation and chemical composition are adjusted to achieve the desired fire safety performance while preserving the paper's aesthetic qualities for decoration.

The patent applies preliminary action by impregnating the paper with fire-retardant resins before lamination to the carrier board. This pre-treatment ensures fire safety is built into the material itself, simplifying the overall manufacturing process. The impregnated paper is then ready for direct lamination without requiring additional fire-protection steps during assembly.

The patent utilizes the porous structure of paper to absorb and retain fire-retardant resins during impregnation. The paper's porosity allows efficient penetration and distribution of the resin throughout the material, ensuring uniform fire protection. This natural absorption mechanism simplifies the impregnation process compared to methods requiring complex coating or infiltration equipment.