Apparatus for producing sanitary absorbent articles comprising a perforating device of a web and process

An apparatus for producing sanitary absorbent articles, comprising:

• at least one perforating device of at least one web intended for making said sanitary absorbent articles,
• wherein said perforating device comprises a first roller and a second roller respectively provided with a first mantle and a second mantle and between which, in use, passes said web,
• wherein said first roller and said second roller are configured to rotate in opposite directions respectively around a first axis of rotation at a first velocity and around a second axis of rotation, parallel to said first axis of rotation, at a second velocity different from said first velocity,
• wherein said first mantle comprises a first protruding pattern and said second mantle comprises at least a first zone,
• wherein a second protruding pattern is present, and at least a second zone without protruding patterns and adjacent to said first zone along a circumference of said second mantle,
• wherein said second protruding pattern is configured, in use, to temporally engage said web with said first protruding pattern without interpenetrating the latter for locally perforating said web.