As a supplier of C1S coated art paper, I understand the critical role that storage conditions play in maintaining the quality of this versatile paper product. C1S, or Coated One Side, art paper is widely used in various printing applications, including brochures, flyers, and packaging, due to its excellent printability and smooth surface finish. However, improper storage can lead to a range of quality issues that can affect the paper's performance and appearance. In this blog post, I will explore how the storage condition of C1S coated art paper affects its quality and provide some practical tips on how to store it properly.
Humidity and Moisture
One of the most significant factors that can impact the quality of C1S coated art paper is humidity and moisture. Paper is a hygroscopic material, which means it can absorb and release moisture from the surrounding environment. When the humidity levels are too high, the paper can absorb excess moisture, causing it to become soft, weak, and prone to wrinkling. On the other hand, when the humidity levels are too low, the paper can lose moisture, becoming brittle and prone to cracking.
In addition to affecting the physical properties of the paper, humidity and moisture can also cause problems with the coating. The coating on C1S art paper is designed to provide a smooth, glossy surface for printing. However, if the paper absorbs too much moisture, the coating can become soft and sticky, making it difficult to print on. Conversely, if the paper loses too much moisture, the coating can become brittle and crack, resulting in a poor print quality.
To prevent these issues, it is essential to store C1S coated art paper in a controlled environment with a relative humidity level between 40% and 60%. This can be achieved by using a dehumidifier or a humidifier, depending on the climate. It is also important to keep the paper away from sources of moisture, such as windows, doors, and water pipes.
Temperature
Temperature is another critical factor that can affect the quality of C1S coated art paper. Extreme temperatures can cause the paper to expand or contract, leading to warping, curling, and other physical deformities. High temperatures can also cause the coating to soften and become sticky, while low temperatures can make the paper brittle and prone to cracking.
To prevent these issues, it is recommended to store C1S coated art paper in a temperature-controlled environment with a temperature between 18°C and 24°C. This can be achieved by using air conditioning or heating systems, depending on the climate. It is also important to avoid exposing the paper to direct sunlight or other sources of heat, as this can cause the paper to overheat and damage the coating.
Light
Light can also have a significant impact on the quality of C1S coated art paper. Exposure to direct sunlight or other sources of ultraviolet (UV) light can cause the paper to yellow and fade over time. This is because UV light can break down the chemical bonds in the paper and the coating, causing them to lose their color and integrity.
To prevent these issues, it is recommended to store C1S coated art paper in a dark or low-light environment. This can be achieved by using opaque storage containers or by storing the paper in a closet or a storage room. It is also important to avoid exposing the paper to fluorescent lights, as these can also emit UV light.
Stacking and Handling
Proper stacking and handling of C1S coated art paper are also essential to maintain its quality. When stacking the paper, it is important to ensure that the stacks are stable and evenly distributed. Uneven stacking can cause the paper to warp or curl, while over-stacking can cause the paper at the bottom of the stack to become compressed and damaged.
When handling the paper, it is important to use clean, dry hands or gloves to avoid transferring dirt, oil, or moisture to the paper. It is also important to avoid bending or creasing the paper, as this can damage the coating and affect the print quality.


Conclusion
In conclusion, the storage condition of C1S coated art paper plays a crucial role in maintaining its quality. Humidity, temperature, light, stacking, and handling are all factors that can affect the paper's physical properties, coating, and print quality. By storing the paper in a controlled environment with a relative humidity level between 40% and 60%, a temperature between 18°C and 24°C, and in a dark or low-light environment, and by handling the paper properly, you can ensure that it remains in excellent condition and provides optimal performance in your printing applications.
If you are interested in purchasing high-quality C1S coated art paper, we offer a wide range of products, including C1S Coated Art Paper Roll, C1S Art Paper Glossy, and OEM C1S Coated Art Paper. Our products are manufactured using the latest technology and highest quality materials to ensure superior performance and printability. Contact us today to discuss your specific requirements and to learn more about how we can help you achieve your printing goals.
References
- ASTM International. (2019). Standard Specification for Coated Paper and Board. ASTM D998 - 19.
- TAPPI. (2018). TAPPI T402 om - 18: Moisture in Pulp, Paper, and Paperboard.
- ISO. (2019). ISO 187: 1990 - Paper, Board and Pulps - Standard Atmosphere for Conditioning and Testing and Procedure for Monitoring the Atmosphere and Conditioning the Samples.
