2. Production Process
2.1 Raw Material Collection
The production of this recycled rigid grey board starts with the collection of waste paper. Sources of waste paper include post - consumer paper such as old newspapers, magazines, office papers, and cardboard boxes. In regions with well - developed recycling systems like Europe and North America, waste paper is carefully sorted into different categories. For example, in Europe, 废纸 is classified into 5 groups and 57 types. High - quality waste paper with long - fiber content is preferred for making rigid grey board as it contributes to the board's strength and rigidity.
2.2 Pulping
Once collected, the waste paper is transported to the paper mill. At the mill, the waste paper undergoes a pulping process. The paper is shredded and mixed with water to form a pulp slurry. Chemicals may be added during this process to break down the ink, adhesives, and other impurities present in the waste paper. Mechanical processes such as beating and refining are also employed to separate the fibers and make them suitable for forming the board.
2.3 Board Formation
The pulp slurry is then formed into a continuous web on a papermaking machine, typically a Fourdrinier machine. In some advanced production lines, especially in Europe, the process may involve a multi - layer forming system. For the production of rigid grey board, a core layer of pulp is first formed, which provides the bulk and strength of the board. Then, additional layers of pulp may be added on top and bottom to improve the surface quality and overall performance of the board.
2.4 Drying and Calendaring
After formation, the wet board web is passed through a series of drying cylinders to remove the moisture. The drying process is carefully controlled to ensure that the board dries evenly and does not warp. Once dried, the board is calendared, which involves passing it through a series of smooth rollers under high pressure. This process compresses the board, giving it a smooth and flat surface, and also improves its density and stiffness.
3. Product Characteristics
3.1 Rigidity and Strength
The 70PT and 80PT thicknesses, combined with the quality of recycled fibers, result in a board with high rigidity. This makes it an ideal choice for hardcover book binding, as it can support the weight of the book pages and withstand the stress of repeated opening and closing. In terms of strength, the board has a high tensile strength, which means it can resist being pulled apart, and a good compressive strength, allowing it to bear pressure without deforming.
3.2 Surface Smoothness
The calendaring process gives the rigid grey board a relatively smooth surface. This smoothness is beneficial for several reasons. In book binding, it provides a better surface for gluing the book cover materials such as cloth, leather, or paper. It also allows for better printing results if the board is to be used for display or packaging purposes where printing on the board surface is required.
3.3 Recyclability and Environmental Friendliness
As it is made from recycled materials, this type of board is highly recyclable. Using recycled fibers reduces the demand for virgin wood pulp, which in turn helps to conserve forests and reduce the energy consumption associated with pulp production from virgin materials. Additionally, the production process of recycled board generally generates less pollution compared to the production of board from virgin fibers.
3.4 Moisture Resistance
While not completely waterproof, the rigid grey board has a certain degree of moisture resistance. The fibers in the board are bonded in a way that can withstand moderate humidity levels without significant warping or weakening. However, prolonged exposure to high humidity or direct water contact can still affect the board's performance, so proper storage conditions are recommended.
4. Application Areas
4.1 Book Binding
One of the most common applications of 70PT 80PT recycled hardcover book binding board is in the production of hardcover books. The board forms the cover of the book, providing protection to the interior pages. It gives the book a professional and durable look, making it suitable for both high - end publications, such as art books, coffee - table books, and textbooks.
4.2 Packaging
In the packaging industry, this rigid grey board is used for making boxes for high - value products. For example, it is commonly used in the packaging of luxury goods like jewelry, high - end cosmetics, and electronics. The board's rigidity can protect the delicate products inside during transportation and storage, and its smooth surface can be printed or laminated with decorative materials to enhance the product's visual appeal.
4.3 Display and Point - of - Sale (POS) Materials
Rigid grey board is also used to create display stands, signage, and other point - of - sale materials in retail stores. Its strength allows it to support the weight of products on display, and its surface can be customized through printing, cutting, and folding to create eye - catching and functional display units.
4.4 Crafts and DIY Projects
Due to its availability, cost - effectiveness, and workability, 70PT 80PT recycled hardcover book binding board is popular among crafters and DIY enthusiasts. It can be easily cut, folded, and glued to create various handicrafts, such as photo frames, storage boxes, and even small furniture prototypes.
5. Market Trends
5.1 Increasing Demand for Sustainable Packaging
With the growing global awareness of environmental issues, there is an increasing demand for sustainable packaging solutions. The 70PT 80PT recycled hardcover book binding board, being a recycled and recyclable product, is well - positioned to benefit from this trend. Many brands are now actively seeking to use more sustainable packaging materials to meet consumer expectations and regulatory requirements.
5.2 Technological Advancements in Production
Paper mills are constantly investing in research and development to improve the production process of recycled rigid grey board. New technologies are being developed to enhance the quality of the board, such as more efficient pulping methods that can better preserve the fiber strength, and advanced coating technologies that can improve the board's water resistance and printability without sacrificing its recyclability.
5.3 Competition and Pricing
The market for recycled hardcover book binding board is highly competitive. There are numerous manufacturers worldwide, with China being the largest producer. In recent years, fluctuations in the price of raw materials, such as waste paper, and energy costs have affected the pricing of the board. Additionally, the competition between domestic and imported products, especially from European manufacturers known for their high - quality products, has also influenced the market dynamics in terms of price and quality.
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