The core of this technology lies in the addition of a foaming agent. Currently, physical foaming agents are widely used, typically highly active anionic surfactant solutions. During the production process, a specialized foaming device first mixes the foaming agent solution with high-pressure air to produce a stable pre-expanded foam with an extremely high water content and a very low bulk density (approximately 50g/L). This fine foam is then thoroughly mixed with gypsum slurry (a mixture of gypsum, water, and additives) in a mixer in a precise ratio.
During the gypsum hydration and solidification process, these introduced microbubbles are firmly anchored in the evolving gypsum crystal network, ultimately forming a lightweight core material filled with uniform, closed-cell pores. These bubbles replace the dense gypsum, significantly reducing the weight of the board (the bulk density of lightweight gypsum board can be as low as 600-750 kg/m³, far lower than the 900-1000 kg/m³ of traditional board).
This "gas-instead-of-material" approach not only effectively conserves gypsum ore and water resources, reducing transportation and installation costs, but also imparts superior thermal insulation and soundproofing properties to the gypsum board, achieving a win-win situation for both functionality and economic and environmental benefits.