Glass wool, formally known as centrifugal glass wool felt, is manufactured through centrifugal spinning technology. This process transforms molten glass—primarily composed of quartz sand, limestone, and dolomite—into fine fibers bonded by environmentally friendly thermosetting resin-based binders. The resulting material consists of interlocking glass fibers with diameters measuring just a few microns, forming an elastic felt-like structure. During production, moisture-resistant facing materials can be integrated as needed for specialized applications.
Key Properties
The material's three-dimensional fiber network creates numerous microscopic air pockets, enabling three core functions:
Thermal insulation by trapping stagnant air
Sound absorption through acoustic energy dissipation
Protective performance as a barrier material
Applications
Primarily used in steel-structure buildings for:
Thermal insulation in walls and roofs
Noise reduction in mechanical systems
Combined with specialized facings for fire-resistant cladding
Material Composition
Produced from natural minerals:
Base components: Quartz sand, limestone, dolomite
Auxiliary additives: Soda ash, borax (for viscosity control)
Binding system: Thermosetting resin formula
Structural Advantage
The interconnected fiber matrix inherently contains abundant microscopic pores, classifying glass wool as a porous material optimized for thermal and acoustic performance. As a subtype of glass fiber, it combines inorganic durability with customizable functional adaptations.

