A packer machine to produce a rigid pack for smoking articles comprising: a sealed wrap, which is obtained by folding a wrapping sheet around a group of smoking articles, and an outer container, which is obtained by folding a blank around the sealed wrap; the packer machine comprises: a forming conveyor, which moves at least a first pocket along a forming path; a hopper, which is arranged in front of the forming conveyor and along the forming path and is provided with at least one output mouth, from which the group of smoking articles can be pulled out; a first wrapping conveyor, which is designed to move the group of smoking articles and the wrapping sheet along a first straight and horizontal wrapping path so as to at least partially fold the wrapping sheet around the group of smoking articles; a first transfer station, where the group of smoking articles is directly transferred from the first pocket of the forming conveyor to the first wrapping conveyor; and a first feeding station, which is arranged downstream of the first transfer station and where the wrapping sheet is coupled to the group of smoking articles moving along the first wrapping path; the packer machine is characterized in that it comprises: a first wrapping drum, which supports at least one second pocket designed to contain the sealed wrap being formed and is mounted so as to rotate around a first vertical rotation axis in order to move the second pocket along a second wrapping path with a circular shape; a second transfer station, where the sealed wrap being formed is directly transferred from the first wrapping conveyor to the second pocket of the first wrapping drum; and at least one first sealing device (34; 62), which is arranged along the second wrapping path downstream of the second transfer station and is configured to seal overlapping portions of the wrapping sheet in the area of a lower wall of the sealed wrap being formed. a forming conveyor, which moves at least a first pocket along a forming path; a hopper, which is arranged in front of the forming conveyor and along the forming path and is provided with at least one output mouth, from which the group of smoking articles can be pulled out; a first wrapping conveyor, which is designed to move the group of smoking articles and the wrapping sheet along a first straight and horizontal wrapping path so as to at least partially fold the wrapping sheet around the group of smoking articles; a first transfer station, where the group of smoking articles is directly transferred from the first pocket of the forming conveyor to the first wrapping conveyor; and a first feeding station, which is arranged downstream of the first transfer station and where the wrapping sheet is coupled to the group of smoking articles moving along the first wrapping path; the packer machine is characterized in that it comprises: a first wrapping drum, which supports at least one second pocket designed to contain the sealed wrap being formed and is mounted so as to rotate around a first vertical rotation axis in order to move the second pocket along a second wrapping path with a circular shape; a second transfer station, where the sealed wrap being formed is directly transferred from the first wrapping conveyor to the second pocket of the first wrapping drum; and at least one first sealing device (34; 62), which is arranged along the second wrapping path downstream of the second transfer station and is configured to seal overlapping portions of the wrapping sheet in the area of a lower wall of the sealed wrap being formed. a first wrapping drum, which supports at least one second pocket designed to contain the sealed wrap being formed and is mounted so as to rotate around a first vertical rotation axis in order to move the second pocket along a second wrapping path with a circular shape; a second transfer station, where the sealed wrap being formed is directly transferred from the first wrapping conveyor to the second pocket of the first wrapping drum; and at least one first sealing device (34; 62), which is arranged along the second wrapping path downstream of the second transfer station and is configured to seal overlapping portions of the wrapping sheet in the area of a lower wall of the sealed wrap being formed.