The fabrication of fire-resistant wraps is determined by the specific application scenario, which dictates the required fire rating and structural configuration. Common practice involves selecting base insulation materials-such as rock wool, ceramic fiber blankets, or aluminum silicate fibers-and processing them into sheets or rolls sized to fit the target components for subsequent wrapping.
Once the base layer is formed, reinforcement is applied. Fiberglass cloth, metal mesh, or high-temperature inorganic coatings are typically integrated with the insulation material to enhance overall tensile strength and structural stability. This step focuses on ensuring the material retains its protective function-avoiding shrinkage, cracking, or detachment-under high-temperature conditions, while also improving its adaptability during installation.
Subsequently, an outer encapsulation layer is applied to enhance moisture resistance, corrosion resistance, and weatherability. Common methods include applying aluminum foil, fire-resistant coatings, or protective films to ensure stable performance over the product's service life. Although this layer does not directly contribute to thermal insulation, it plays a crucial role in extending the product's longevity.
The final stage involves finishing and testing, encompassing cutting, shaping, and assembly (via stitching or bonding), followed by rigorous testing for fire resistance, density, and stability. Fire-resistant wrap products are approved for actual engineering applications only after meeting all relevant standards.