The production process for glass wool boards consists of a continuous sequence: high-temperature melting, fiber formation, curing and setting, and post-processing. The core of the process lies in transforming raw glass materials into fine, elongated fibers and creating a stable board structure.
During the high-temperature melting stage, raw materials-such as quartz sand, soda ash, and limestone-along with recycled glass, are mixed in specific proportions and fed into a furnace, where they melt into a homogeneous glass melt at temperatures exceeding 1,000°C. The melt then undergoes fiberization, where high-speed centrifugal spinning or air-blowing techniques are used to draw the molten glass into extremely fine fibers, simultaneously creating a fluffy, three-dimensional network structure.
A thermosetting resin or other binder is sprayed onto the fibers during the formation process to achieve initial bonding; subsequent heat curing stabilizes the structure and transforms the material into a board with the required strength. This step determines the glass wool board's density, rigidity, and overall stability.
Post-processing includes operations such as cutting to size, surface lamination (e.g., with aluminum foil or fiberglass cloth), and compression packaging. Depending on the intended application, the boards may also undergo moisture-proofing or reinforcement treatments, making them suitable for various engineering scenarios such as wall insulation, acoustic ceiling panels, or equipment thermal insulation.