C1S
“C1S” stands for “Coated One Side.” It refers to a type of paper or paperboard that is coated with a smooth, glossy finish on one side only. The other side remains uncoated, often having a rougher texture.

Here are some key features and uses of C1S paper or paperboard:

Coating: C1S paper or paperboard has a coating applied to only one side of the sheet. This coating is typically made of clay or other materials and provides a smooth, glossy surface that enhances the printability and visual appeal of the coated side.

Printability: The coated side of C1S paper or paperboard offers excellent printability, allowing for sharp and vibrant printing of graphics, images, and text. The smooth surface of the coating ensures that ink adheres well to the paper, resulting in crisp and clear print quality.

Appearance: The coated side of C1S paper or paperboard has a glossy finish that gives printed materials a polished and professional look. The uncoated side may have a more natural or textured appearance, depending on the specific characteristics of the paper or paperboard.

Versatility: C1S paper or paperboard is versatile and can be used for a wide range of printing and packaging applications. It is commonly used for products such as packaging inserts, book covers, posters, promotional materials, and point-of-sale displays.

Cost-effectiveness: C1S paper or paperboard is often more cost-effective than papers or paperboards that are coated on both sides. This makes it a popular choice for applications where a glossy finish is desired on one side only, such as packaging or promotional materials where the uncoated side will not be visible to the end user.

Overall, C1S paper or paperboard offers a combination of excellent printability, visual appeal, and cost-effectiveness, making it a popular choice for a variety of printing and packaging applications.