Anti-blocking is a term used to describe measures to prevent film sheets to stick together. Polymeric films tend to adhere to each other due to strong van der Waals interaction or electrostatic charges when being in close contact (adjacent layers). The higher the temperature, pressure, and contact/processing time, the higher the tendency to stick to each other.
Anti-blocking additives reduce blocking at the surface of polymer films and other plastic articles to allow easier processing and handling.
Adding antiblock agents / anti-slip agents resolve this by forming barriers between surface layers and modifying frictional properties of the surface. Uncover the role of antiblock agents in polymers, their types and get tips to select the right antiblock agent for elastomers, films and rubbers.
Prevention of film blocking during and after processing