By a special treatment of film, i.e. hot embossing of various shapes - a particular structure of surface is achieved. Such film is used mostly in rubber industry and also as protection of adhesive surfaces. Properties of these films enable air draining from the plastic material application. After the material hardening the film can be simply pulled off.
Release liners are necessary to separate single coated and double coated tapes and rubber. Release liners are usually comprised of glassine, paper or plastic which has been coated with clay or fluorosilicone. Embossed plastic film, also known as camelback or dimpled film, works by minimizing the amount of surface contact.
While siliconized coated papers are sophisticated and can be tailored with features such as differential release, they are expensive due to the complex manufacturing process. They are hydroscopic and can paper-based siliconized release papers exhibit buckling or cockling after exposure to high heat and humidity. There is no secondary use for them, so silicone coated release liners are destined for the landfill.