Mixing device and mixing method for dispensing a multi-component polymeric mixture

Mixing device for dispensing a multi-component polymeric mixture, the device comprising:

• a main body comprising a mixing chamber for mixing at least a first and a second component of the mixture;
• the mixing chamber having a main development along a longitudinal direction and comprising a respective longitudinal open end;
• a movable body having a central axis with longitudinal development and slidably housed in the main body to alternatively assume, by sliding along the longitudinal direction, an occlusion position, in which it occludes the mixing chamber to preclude a mixing of the first and second component of the mixture, and a mixing position, in which it clears the mixing chamber to allow the mixing of the first and second component of the mixture, wherein
• the movable body comprises a first channel and a second channel each comprising a respective end portion extending substantially along the longitudinal direction up to a longitudinal end face of the movable body facing the longitudinal open end of the mixing chamber,
• wherein the respective end portions of the first and second channel are both displaced from the central axis of the movable body, and
• wherein the respective end portions of the first and second channel are made by respectively a first and a second groove obtained on a longitudinal surface of the movable body, each groove having development with a component perpendicular to the longitudinal direction or wherein the respective end portions of the first and second channel develop inside the movable body.