As a supplier of C2S white duplex board, I've witnessed firsthand the diverse applications and benefits of this remarkable product. The C2S, or Coated Two Sides, white duplex board is a high - quality paperboard that has found its way into numerous industries, from packaging to printing. One of the most critical aspects of this board is the coating on its surface. In this blog, I'll delve into the functions of the coating on C2S white duplex board.
1. Enhanced Printability
The primary function of the coating on C2S white duplex board is to improve printability. When it comes to printing, whether it's for high - end packaging, brochures, or labels, sharpness, color accuracy, and image reproduction are of utmost importance. The coating provides a smooth and uniform surface for ink to adhere to.
Without the coating, the paperboard surface would be porous, and the ink would be absorbed unevenly. This could lead to blurry images, inconsistent color, and a generally poor - quality print. The coating fills in the pores of the paperboard, creating a flat and non - absorbent surface. As a result, the ink sits on top of the coating, allowing for precise dot gain control and vibrant color reproduction.
For instance, in the packaging industry, products often rely on eye - catching graphics to stand out on the shelves. A well - coated C2S white duplex board can ensure that the brand logo, product images, and other printed elements look sharp and professional. You can explore our C2S White Duplex Board Roll for a product that offers excellent printability.
2. Improved Surface Strength
Another significant function of the coating is to enhance the surface strength of the C2S white duplex board. Surface strength refers to the ability of the board's surface to withstand the mechanical forces during printing and converting processes.
During high - speed printing, the paperboard is subjected to friction from the printing plates, blankets, and other components of the printing press. Without a proper coating, the surface fibers of the board could be pulled out, leading to a phenomenon known as picking. Picking can cause defects in the printed image, such as white spots or missing ink areas.
The coating acts as a protective layer that binds the surface fibers together, increasing the surface strength. This allows the board to withstand the rigors of high - speed printing without picking. Additionally, in converting processes like die - cutting and folding, a strong - coated surface ensures that the board doesn't delaminate or tear, maintaining the integrity of the final product. Our Recyclable C2S White Duplex Board has a coating that provides excellent surface strength while being environmentally friendly.
3. Barrier Properties
The coating on C2S white duplex board can also impart certain barrier properties. In some applications, such as food packaging, it's crucial to protect the product from moisture, oxygen, and other contaminants.
A well - formulated coating can act as a moisture barrier, preventing the ingress of water vapor. This is especially important for products that are sensitive to moisture, as it can affect their quality, shelf life, and taste. For example, in the packaging of dry snacks or baked goods, a moisture - resistant coating on the C2S white duplex board can keep the products fresh and crispy for a longer period.
In addition to moisture, the coating can also provide a barrier against oxygen. Oxygen can cause oxidation of food products, leading to spoilage, color changes, and loss of flavor. By reducing the oxygen transmission rate, the coating helps to preserve the quality of the packaged food. Our OEM C2S White Duplex Board can be customized with coatings that offer specific barrier properties according to your product requirements.
4. Aesthetic Appeal
The coating plays a vital role in enhancing the aesthetic appeal of the C2S white duplex board. A smooth, glossy coating gives the board a high - end and professional look, making it more attractive to consumers.
Glossy coatings reflect light uniformly, creating a shiny and reflective surface. This can make the printed images appear more vivid and eye - catching. In contrast, a matte coating provides a more subdued and sophisticated look, which is often preferred for luxury products or high - end packaging.
The choice of coating finish can also be used to convey a certain brand image. For example, a high - gloss coating might be used for a trendy and modern brand, while a matte coating could be associated with a classic and elegant brand. By offering different coating finishes, we can help our customers create packaging that aligns with their brand identity.
5. Chemical Resistance
In some industrial applications, the C2S white duplex board may come into contact with various chemicals. The coating can provide a level of chemical resistance, protecting the board from damage.
For example, in the packaging of cleaning products or chemicals, the board needs to be resistant to the corrosive effects of these substances. A chemical - resistant coating can prevent the chemicals from penetrating the board, ensuring the integrity of the packaging and the safety of the product.
6. Durability
The coating adds to the overall durability of the C2S white duplex board. It protects the board from scratches, abrasions, and general wear and tear.


In the supply chain, products are often handled, transported, and stored in various conditions. A coated board can better withstand these handling processes without getting damaged. For example, in shipping, the board may rub against other packages or be exposed to rough surfaces. The coating acts as a buffer, preventing the board from getting scratched or scuffed, which could otherwise affect the appearance and functionality of the packaging.
Conclusion
In conclusion, the coating on C2S white duplex board serves multiple functions that are essential for its performance in various applications. From enhancing printability and surface strength to providing barrier properties and aesthetic appeal, the coating is a key factor in the quality of the board.
As a supplier, we are committed to providing high - quality C2S white duplex board with the right coating for your specific needs. Whether you're in the food packaging, printing, or industrial sector, we have the expertise and products to meet your requirements. If you're interested in learning more about our C2S white duplex board or would like to discuss a potential purchase, please feel free to reach out. We look forward to the opportunity to work with you and help you find the perfect solution for your business.
References
- "Paper and Board Packaging Technology" by Geoff Campbell
- "Printing and Packaging Materials: Science, Technology, and Applications" by John F. Corbett
