Product Introduction

F40 reinforced aluminum foil facing is a multi-layer composite functional material whose core function is to enhance thermal insulation, moisture resistance, and structural stability, making it widely used in thermal insulation applications such as building construction and piping systems.

Product Structure

	①	Aluminum foil
	②	Adhesive
	③	Three-way glass fiber mesh
	④	Kraft paper

Product Specifications

Core Material Composition

Wood-pulp paper layer: Typically made from 100% wood-pulp kraft paper (common basis weight: 60–70 g/m²), which provides fundamental toughness and abrasion resistance, protects the internal structure, and offers a certain degree of tensile strength.
Reinforcement layer: Typically a mesh structure made of glass fiber or PP (polypropylene) fibers, often with a triaxial cross-weave design. This layer serves as the “skeleton” of the material, primarily enhancing its overall tensile and tear resistance to prevent deformation or failure under load.
Pure aluminum foil layer: Unlike aluminum-plated film, this layer uses high-purity metallic aluminum foil (typically 6–50 μm thick) as the core functional layer. It offers excellent water vapor barrier properties and thermal reflectivity, effectively preventing moisture penetration and reflecting heat.

Key Performance Features

Thermal Insulation and Moisture Resistance: The pure aluminum foil layer reflects more than 90% of thermal radiation, reducing heat transfer; at the same time, it completely blocks water vapor, preventing the insulation layer from becoming damp and losing effectiveness, making it suitable for high-humidity environments.
High structural strength: The grid structure of the reinforcing layer significantly enhances the material’s tensile and tear resistance, making it less prone to damage during installation and capable of withstanding moderate external impacts, thereby extending its service life.
Safety and Weather Resistance: Certain products undergo flame-retardant treatment (using wood-pulp paper combined with flame-retardant adhesives), achieving a fire-resistance rating of B1. Following salt-spray and damp-heat tests, their performance remains stable, enabling long-term use under a variety of climatic conditions.

Main Application Areas

Building thermal insulation: When combined with thermal insulation materials such as glass wool, rock wool, and extruded polystyrene boards, it is used for thermal insulation of building walls, roofs, and suspended ceilings, thereby enhancing the energy efficiency of buildings.
Pipe and equipment insulation: Applied as an outer wrap around HVAC ductwork, hot and chilled water pipes, and industrial process piping to provide thermal insulation, prevent condensation, and reduce energy losses.