Gypsum board is a kind of material made of building gypsum as main raw material. It is a kind of light weight, high strength, thin thickness, convenient processing and sound insulation insulation and fire prevention and other good performance building material, is one of the new light weight material with emphasis on the development of current, plasterboard kinds of great variety, plasterboard produced in our country mainly have: Paper gypsum board, non-paper gypsum board, decorative gypsum board, gypsum hollow board, fiber gypsum board, among which paper gypsum board is the most important gypsum board products, accounting for about 80% of the output.
Gypsum board production line production process: gypsum powder of Paris made from original gypsum ore or industrial desulfurized gypsum (gypsum content ≥75%) is added with water, white latex, modified starch, foaming agent and other additives to make gypsum slurry. After the gypsum slurry is evenly spread on the paper surface, the upper and lower protective paper is bonded, the initial solidification is completed on the belt, and the final solidification is completed on the conveying roller table. Through the distribution machine into the drying system; After the completion of drying, the gypsum board through cutting edge, automatic edge wrapping, finished product stacking, and finally complete the inspection and packaging.
Industry development
Gypsum board industry has a history of more than 40 years since the 1970s. From the perspective of development process, the industry has experienced four stages: starting - development - rapid growth - steady growth, and is still in the stage of steady growth.
The demand for drywall
In 2020, due to the hardness of the COVID-19 pandemic, the completion end will recover. It is expected that the completed area will increase by 7% in 2021, which will bring about 32 million square meters of incremental demand for gypsum board. The reconstruction of the old residential area and the second decoration of the house together pull the demand of the stock market gypsum board. Gypsum board is fast, convenient, cheap, easy to disassemble and so on, is in line with the tooling requirements of the ideal material, so widely used in tooling market. The new wall material is promoted by the state for the purpose of protecting land and saving energy. Common new types of demolition include drywall, which is expected to increase in use with the development of assembly construction. Gypsum board is mainly used for ceiling in China, and wall only accounts for 30%, while wall application accounts for 80% in the United States. With the development of various economy and construction, the demand of gypsum board will be more and more, so the demand of gypsum board production line will be more and more.