Processes for causing an extensible polymer film to adhere to the edge of the opening of a bottle or similar container made of plastic (pet or the like) or metal and various devices for implementing said processes

摘要

Various processes and relevant devices for causing polymer films, which are extensible to adhere to the edges of openings of plastic or PET or even metal containers, by releasing electrostatic charges opposite in sign to those of containers and/or the polymer films to be applied thereto. The processes derive from a single general inventive concept.