An automatic paper hardboard production line is a production equipment used for manufacturing packaging cardboard. The process usually includes the following steps:

1. Raw material preparation: The main raw materials for producing cardboard are waste paper and pulp. Before the production line starts running, appropriate processing and preparation of raw materials are required, including selection, cleaning, and mixing.

2. Pulp preparation: The waste paper in the raw materials is processed through processes such as pulping, screening, and bleaching to produce pulp, which prepares for the subsequent paper making process.

3. Paper making: Using a forming mechanism to produce cardboard from pulp, including two different processes: wet paper making and dry paper making. Wet paper making requires spraying pulp onto a mesh belt and forming cardboard through extrusion and drying, while dry paper making involves spraying pulp onto a metal mesh belt and forming cardboard through hot air drying.

4. Polishing and cutting: The cardboard formed by paper making process needs to undergo polishing and cutting processes to make the surface smooth and accurate in size.

5. Packaging and Finished Products: The processed cardboard is packaged into the specified size and quantity, becoming the final finished product.

Throughout the entire automatic grey hardboard production line process, stable equipment operation and precise control of process parameters are key to ensuring efficient production line operation and high-quality cardboard production. Meanwhile, reasonable utilization of raw materials and environmental protection measures are also important factors in ensuring the sustainable development of production lines. With the development of technology, Composite cardboard production lines have achieved automation and digitization, greatly improving production efficiency and product quality, while also reducing production costs, bringing new opportunities and challenges to the development of the cardboard industry.

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