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The gypsum board manufacturing process is a controlled, multi-stage production cycle that transforms raw gypsum into finished drywall panels. At Hengshui Decheng Machinery & Equipment Co.,Ltd, the process has been refined to ensure consistency, precision, and production efficiency.
Raw Material Handling
The first stage begins with raw material preparation. Natural or synthetic gypsum is crushed and ground into a fine powder. This material is stored in silos before being sent to the slurry mixing station. Here, the gypsum powder is mixed with water and additives such as starch, foam agents, and retarders to achieve the correct properties for setting and strength.
Forming and Setting
In the forming section, the slurry is deposited onto a continuously moving paper web. A second paper layer is applied on top, encapsulating the slurry. This ‘sandwich’ passes through a shaping conveyor where the board starts to set. During this stage, the board gains sufficient rigidity for subsequent cutting.
Cutting and Drying
Once the board reaches the end of the forming line, it is cut into predetermined lengths using high-speed knives. The cut boards are then carefully transferred into a multi-deck drying kiln. Drying removes moisture while preserving the integrity of the board and preventing surface cracking or bending.
Final Steps
After drying, the boards are trimmed for uniform edges. Quality inspection follows, where boards are checked for surface finish, thickness, and weight. Compliant boards are stacked and wrapped for delivery.
Environmental and Process Controls
Throughout the process, various control systems monitor critical parameters such as water-to-gypsum ratio, board thickness, and drying time. Dust collection units ensure a clean working environment while complying with environmental regulations.
The gypsum board manufacturing process balances precision engineering with automated systems to produce boards suitable for a wide range of architectural needs.
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