In the field of building insulation materials, rock wool blankets, due to their superior performance, have become a core choice for energy-saving projects. As an industry leader, SUNTHERM Group has been deeply engaged in rock wool technology for over 30 years. With innovative processes and environmentally friendly concepts, it has developed rock wool blanket products for a wide range of applications, providing strong impetus for the development of green buildings worldwide.
The Group's rock wool blanket production begins with the optimal utilization of natural minerals. Selected volcanic rocks, such as basalt, are melted at 1500°C and then processed through a four-roll centrifugal spraying process into micron-sized fibers. This process not only preserves the natural fire resistance of the volcanic rock but also achieves a thermal conductivity as low as 0.03 W/(m·K). It maintains structural stability at temperatures of 500°C, with high-temperature resistance far exceeding that of traditional insulation materials. The unique "three-stage curing process" overcomes the problem of rock wool's water absorption, resulting in a water absorption rate of ≤1%, a waterproof rating that meets international standards, and a service life of over 25 years.
The product portfolio covers the entire construction, industrial, and agricultural sectors. In the construction sector, Class A fireproof rock wool blankets effectively block the spread of flames and have been used in super-high-rise projects such as Beijing Daxing Airport, contributing to building energy savings of 30%-45%. In the industrial sector, rock wool rolls with a temperature resistance of 1000°C and a compressive strength of 100 MPa can withstand equipment vibration and reduce heat loss by 18%. In the agricultural sector, low-density rock wool matrix blankets offer both breathability and moisture retention, with a market share exceeding 40%.
The Group adheres to green development and has built the industry's first "zero-carbon factory." Its waste heat recovery system has increased heat utilization to 92%, reducing carbon emissions per unit of production by 58% compared to 2019. A digital traceability platform enables full product lifecycle management, with an 85% waste recycling rate, creating a closed-loop economic model.
Going forward, the SUNTHERM Group will continue to deepen its materials science research, advance intelligent customized production, and innovate in functional integration to provide global customers with more efficient and environmentally friendly building energy-saving solutions, leading the industry towards a sustainable future.
