Roll coating is a manufacturing process used to apply a uniform layer of liquid material, such as paint or adhesive, onto a surface. This technique involves passing a substrate, like metal or plastic, between two rollers that transfer the coating material onto the surface. The rollers can be adjusted to control the thickness of the coating, ensuring a consistent application. This method is commonly used in industries like automotive and furniture manufacturing, where a smooth finish is essential. Roll coating is efficient and can cover large areas quickly, making it a popular choice for high-volume production settings.