In the papermaking industry, white cardboard has attracted much attention for its unique texture and wide application. The forming process of white cardboard is the key linkthat determines its quality and performance.
The forming process of white cardboard begins with the selection of high-quality wood pulp. These wood pulps must be strictly screened and cleaned to ensure the purity and uniformity of the fibers, laying a solid foundation for subsequent processes. Next, the wood pulp is sent to the pulper, and under the action of the high-speed rotating blade, the fibers are fully dispersed to form a uniform pulp liquid.
Then, the pulp liquid is slowly poured into the forming net. Supported by the net curtain, the fibers in the pulp liquid begin to interweave into a mesh structure, gradually forming the initial form of the paper. In this process, the mutual entanglement and fixation between the fibers determine the basic strength and structure of the paper.
Next, the paper enters the drying stage. Through equipment such as hot air circulation or vacuum water suction box, excess water is quickly removed to make the paper reach an appropriate moisture content. The drying process has a vital impact on the flatness and strength of the paper.
Finally, after finishing processes such as cutting, grinding and coating, the white cardboard reaches the final flatness and smoothness requirements. These processes not only improve the appearance quality of the paper, but also enhance its durability and special functions.
The molding process of white cardboard is a precise and complex process involving strict control of multiple links. With the continuous advancement of technology, the molding process of white cardboard will be more efficient, environmentally friendly and intelligent to meet the growing market demand and promote the sustainable development of the papermaking industry.