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Jun . 12, 2024 20:18 Back to list

Production process of duplex board yields various products.

The Manufacturing Process and Products of Duplex Board Duplex board, a versatile and cost-effective packaging material, is a double-layered cardboard made from a combination of Kraft paper and recycled paper. Its production process is intricate and involves several stages, resulting in a variety of products that cater to diverse industries. The manufacturing process of duplex board begins with the procurement of raw materials. High-quality Kraft paper, typically produced from eucalyptus pulp, forms the outer layer for its strength and durability. Recycled paper, sourced from waste paper, serves as the inner layer, contributing to the eco-friendly nature of the product. These raw materials are then thoroughly cleaned and processed to remove impurities. The first stage is the pulping process, where the raw materials are mixed with water and chemicals to create a slurry. This mixture is then refined to ensure the fibers are evenly distributed. The next step is the formation of sheets, where the pulp slurry is poured onto a wire mesh screen, allowing excess water to drain, leaving behind a thin layer of fiber mat. Once the fiber mat is formed, it undergoes a pressing process to remove more water and compact the fibers. The two mats, one Kraft and one recycled, are then glued together using a suitable adhesive and passed through heated rollers for drying. This fusion creates the characteristic double-layer structure of duplex board, giving it its strength and rigidity This fusion creates the characteristic double-layer structure of duplex board, giving it its strength and rigidity This fusion creates the characteristic double-layer structure of duplex board, giving it its strength and rigidity This fusion creates the characteristic double-layer structure of duplex board, giving it its strength and rigidityduplex board manufacturing process products. After drying, the board is cut into the desired sizes and trimmed for quality control. It may also be coated or laminated to enhance its surface finish, printability, and moisture resistance. This coating can be a simple varnish or more complex layers of clay, ensuring a smooth and attractive surface for printing. The final product, duplex board, finds extensive use in various industries due to its unique properties. In the packaging sector, it is commonly used for making boxes, cartons, and corrugated sheets for shipping and storage. Its strength and low cost make it ideal for food packaging, especially for heavy items like beverages and canned goods. Moreover, it's used in the manufacture of greeting cards, gift boxes, and even in the production of partitions and dividers in stationary. In conclusion, the manufacturing process of duplex board is a testament to resource efficiency and sustainability. By combining Kraft and recycled paper, it not only offers a robust packaging solution but also contributes to waste reduction. The end products, with their versatile applications, are a reflection of the ingenuity of this manufacturing process, making duplex board an indispensable component in the world of packaging.


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