The calender section of a consists of a calender and other equipment. The web is run between in order to further smooth it out, which also gives it a more uniform thickness. The pressure applied to the web by the rollers determines the finish of the paper, and there are three types of finish that the paper can have. The first is finish, and can range from a rough antique look to a smooth high quality finish. The second is called a supercalendered finish and is a higher degree for fine-screened printing.
A supercalender is a stack of calenders consisting of alternating and -covered rolls through which is passed to increase its , smoothness and gloss. It is similar to a calender except that alternate chilled cast iron and softer rolls are used. The rolls used to supercalender uncoated paper usually consist of and highly compressed paper, while the rolls used for are usually cast iron and highly compressed cotton. The finish produced varies according to the raw material used to make the paper and the pressure exerted on it, and ranges from the highest English finish to a highly glazed surface. Supercalendered papers are sometimes used for books containing fine line blocks or because they print well from type and halftones, although for the latter they are not as good as coated paper.
The paper sheet processed by our super calender acquires more uniform density, better smoothness, and higher gloss. For example, the smoothness of the coated paper calendered by our finishing equipment is 600s to 1000s.