A packer machine to fold a wrap around a group of smoking articles; the packer machine comprises: a spindle provided with a tubular cavity, which is designed to accommodate the group of smoking articles; a first wrapping drum, which is mounted so as to rotate around a first rotation axis, supports the spindle and moves the spindle along a first circular wrapping path; a first feeding device, which is designed to insert the group of smoking articles into the tubular cavity of the spindle; a second feeding device, which is designed to feed the wrap to the spindle; a first folding device, which is arranged along the first wrapping path and is designed to fold the wrap in a "U"-shape around the spindle; a first linear wrapping conveyor, which is designed to pull the group of smoking articles, together with the "U"-folded wrap, out of the spindle and is designed to move the group of smoking articles, wrapped in the "U"-folded wrap, along a second straight wrapping path, which is parallel to the first rotation axis; and a second folding device, which is arranged along the second wrapping path and is designed, on each side of the "U"-folded wrap, to fold two longitudinal wings (23, 24) on top of one another, so as to give to the wrap a tubular shape having one single open end; the packer machine is characterized in that it comprises: a second linear wrapping conveyor, which receives the group of smoking articles, together with the tubular wrap, from the first wrapping conveyor and is designed to move the group of smoking articles, wrapped in the tubular wrap, along a third straight wrapping path, which is perpendicular to the second straight wrapping path; and a third folding device, which is arranged along the third wrapping path and is designed to fold two longitudinal wings (26, 27) of the open end of the tubular wrap on top of one another. a spindle provided with a tubular cavity, which is designed to accommodate the group of smoking articles; a first wrapping drum, which is mounted so as to rotate around a first rotation axis, supports the spindle and moves the spindle along a first circular wrapping path; a first feeding device, which is designed to insert the group of smoking articles into the tubular cavity of the spindle; a second feeding device, which is designed to feed the wrap to the spindle; a first folding device, which is arranged along the first wrapping path and is designed to fold the wrap in a "U"-shape around the spindle; a first linear wrapping conveyor, which is designed to pull the group of smoking articles, together with the "U"-folded wrap, out of the spindle and is designed to move the group of smoking articles, wrapped in the "U"-folded wrap, along a second straight wrapping path, which is parallel to the first rotation axis; and a second folding device, which is arranged along the second wrapping path and is designed, on each side of the "U"-folded wrap, to fold two longitudinal wings (23, 24) on top of one another, so as to give to the wrap a tubular shape having one single open end; the packer machine is characterized in that it comprises: a second linear wrapping conveyor, which receives the group of smoking articles, together with the tubular wrap, from the first wrapping conveyor and is designed to move the group of smoking articles, wrapped in the tubular wrap, along a third straight wrapping path, which is perpendicular to the second straight wrapping path; and a third folding device, which is arranged along the third wrapping path and is designed to fold two longitudinal wings (26, 27) of the open end of the tubular wrap on top of one another. a second linear wrapping conveyor, which receives the group of smoking articles, together with the tubular wrap, from the first wrapping conveyor and is designed to move the group of smoking articles, wrapped in the tubular wrap, along a third straight wrapping path, which is perpendicular to the second straight wrapping path; and a third folding device, which is arranged along the third wrapping path and is designed to fold two longitudinal wings (26, 27) of the open end of the tubular wrap on top of one another.