The main raw materials of Water-based coated paper include base paper, water-based resin, pigment, additive and water. The base paper is usually wood pulp paper or recycled paper, which provides support and structure; water-based resin (such as polyacrylate and polyurethane) is used to enhance the adhesion and waterproofness of the coating; pigment is used to increase the color and gloss of the coating and enhance the visual effect. Additives such as leveling agents, dispersants and desiccants help improve the fluidity, uniformity and drying speed of the coating; water is used as the main solvent to mix the coating ingredients and evaporate during the coating process. The selection and ratio of these raw materials directly affect the performance, quality and environmental characteristics of water-based coated paper.
The waterproofness of water-based coated paper is an important characteristic, which is mainly reflected in the following aspects:
Water-based coated paper usually uses water-based resin (such as polyacrylate and polyurethane) as coating materials. These resins have excellent waterproof properties and can effectively prevent water penetration.
The thickness and uniformity of the coating directly affect the waterproof effect. A uniform and appropriately thick coating can form an effective barrier to prevent moisture from contacting the base paper.
During the production process, the use of specific waterproofing treatment technology can further enhance the waterproofness of the paper. For example, special coating methods or the addition of waterproofing additives can be used to improve the waterproof effect of the coating.
Waterproofness makes water-based coated paper widely used in food packaging, labels and other products that need to come into contact with water or humid environments. This feature ensures the safety and durability of the product and helps to extend the shelf life of the product.
The durability of water-based coated paper is mainly reflected in the enhanced strength and waterproof performance. Through the addition of the coating, the overall strength of the paper is improved, making it more tear-resistant and wear-resistant, and able to withstand the pressure during transportation, storage and use. In addition, the application of water-based resin not only improves the waterproofness and prevents the paper from being deformed or damaged due to contact with water, but also gives it a certain resistance to chemical corrosion, which is suitable for industrial and commercial environments. High-quality water-based coated paper usually also has good light resistance, can resist ultraviolet radiation and is not easy to fade, while remaining stable under different temperature environments. These characteristics make water-based coated paper show good durability in a variety of applications, meeting customers' needs for long-term storage and use.
Water-based coated paper is widely used in many fields due to its excellent performance and environmental protection characteristics. First, it is widely used in food packaging, such as takeaway boxes, food bags and labels, to ensure the freshness and safety of food during storage and transportation. In addition, in the printing industry, water-based coated paper provides colorful and clear printing effects, suitable for products such as advertisements, brochures and business cards. It is also commonly used in the production of labels and stickers, with good water resistance and grease resistance, suitable for a variety of applications. For handicrafts and DIY projects, water-based coated paper provides diversity and operability to meet the needs of creators. Finally, in the industrial field, it can be used for product identification and information labels, with durable and chemical corrosion resistance. These applications show the importance of water-based coated paper in the field of modern packaging and printing.
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