Gypsum board is a material made of building gypsum as the main raw material. It is a kind of building material with light weight, high strength, thin thickness, convenient processing, sound insulation, heat insulation and fire resistance. Gypsum boards have been widely used in interior partition walls, wall cladding panels (instead of wall plastering layers), ceilings, sound-absorbing boards, ground base boards and various types of buildings such as residences, office buildings, shops, hotels and industrial plants. Decorative panels, etc. What is most widely used for ceiling partition board in current circulation is paper gypsum board or cloth gypsum board, and the middle layer of these two kinds of boards is desulfurized gypsum or natural gypsum layer, and the upper and lower layers on both sides of the middle layer adopt Cover paper or cover cloth, the rigidity of the gypsum board comes from the strength of the cover paper. When the cover paper is wet, the anti-folding disturbance is seriously reduced, and the board is easily deformed after being wet. Surfaces are flammable and limited in fire resistance.

Since the upper and lower end surfaces of the gypsum condensation layer are respectively covered with a coated glass fiber mat protective layer, and the coated glass fiber mat can be effectively waterproof and fireproof, the gypsum board in the utility model has a good waterproof and fireproof effect. The coated glass fiber mat can effectively waterproof, so that the coated glass fiber mat will not reduce the flexural resistance, that is, the strength of the overall gypsum board will not be reduced by water or humidity. At the same time, the strength of the entire gypsum board is greatly improved because the coated glass fiber mat and the gypsum coagulation layer have the property of firm bonding.