4563 is a 13.4 mil, smooth siliconized treated cloth tape. It is ideal for web control roller covering in the paper and plastics industries. It consists of a specially treated rayon fabric that is siliconized treated and a thermoset rubber adhesive. The coated surface is highly resistant to "sticky" substances, yet provides a reliable "non-slip" effect on smooth surfaces. It is commonly refered to as "printer's friend".