The Difference Between White Board and Grey Board – And Their Respective Uses

In the field of packaging and printing paperboard, white board and grey board are two very common materials. Many people easily confuse them when first encountering these terms, because both are thick paperboards and look somewhat similar in appearance. However, white board and grey board have clear differences in raw materials, color, surface treatment, and applications. Understanding these differences can help you choose the right material for your product.

Let's start with white board. White board is a thick paperboard with a white surface, usually made by combining multiple layers of pulp. The top layer is made of bleached chemical wood pulp, giving it a bright, smooth surface. The main feature of white board is its clean, white, and flat surface, which makes it suitable for color printing. Its back side may be white, grey, or natural, depending on the grade of the white board, such as grey-back white board or white-back white board. White board has good printability. Whether using offset, flexographic, or screen printing, it can produce vivid colors and sharp graphics. Therefore, white board is widely used in high-end packaging where appearance matters, especially for premium gift boxes. Examples include tea gift boxes, mooncake gift boxes, cosmetic gift boxes, and liquor gift boxes. These products are displayed in stores or gift markets, where the appearance of the packaging directly affects consumer purchasing decisions. As a result, they require a material with good whiteness and excellent printing quality. In addition, white board is also commonly used for making book linings for hardcover books, file folders, hang tags, as well as some display stands and merchandising props.

Grey board, on the other hand, is completely different. Grey board is made from recycled waste paper pulp and undergoes no bleaching process, so its entire core appears grey or dark grey. The surface of grey board is not as smooth as that of white board; it is relatively rough and is not suitable for direct printing. The biggest advantages of grey board lie in its environmental friendliness and low cost. Because its raw materials come entirely from recycled waste paper, grey board is a typical circular economy product that meets increasingly strict environmental requirements. At the same time, the production process of grey board is relatively simple, and its cost is much lower than that of white board. For large-volume projects or cost-sensitive applications, grey board is a very economical choice. Another advantage of grey board is its stiffness and thickness. At the same grammage, grey board is stiffer than white board, making it suitable for structural parts that need to bear weight or provide support. The most common use of grey board is for hardcover book covers and book cases. Most of the hardcover books, photo albums, and commemorative books you see have a layer of fabric, leather, or specialty paper wrapped around the outside, and the stiff board inside is grey board. In addition, grey board is also widely used for internal support structures in premium gift boxes, cover boards for file folders, puzzle backing boards, picture frame backings, and other lining materials that require strength but do not require surface printing.

So what are the main differences between white board and grey board? They can be seen from three aspects. First is the surface and printability. White board has a white, smooth, and flat surface suitable for direct color printing. Grey board has a grey, relatively rough surface and is typically not used for direct printing; instead, it serves as a substrate for internal support or covering applications. Second is the raw materials and environmental impact. White board mostly uses virgin wood pulp for its top layer, while grey board is made entirely from recycled waste paper pulp. Therefore, grey board has an advantage in terms of environmental protection and circular use. Third is cost and stiffness. The cost of grey board is much lower than that of white board, and at the same thickness, grey board offers higher stiffness, making it suitable for applications requiring structural strength.

In practical applications, white board and grey board are often used together. A typical example is a premium gift box: the outer surface of the box uses white board because it needs to print beautiful patterns and logos, while the internal support structure or bottom panel uses grey board. This part is covered and does not need printing, but it requires stiffness and thickness to protect the product. Using grey board also effectively reduces the overall packaging cost and aligns with environmental concepts. Another example is a hardcover notebook: under the outer wrapping material of the cover, grey board is usually used to provide rigid support, while the inner cover or endpaper may use white board to print brand information or decorative patterns.