A packer machine for the production of pouches containing portions of a loose product, in particular of the tobacco industry; the packer machine comprises: a conveyor device configured to move at least one band of wrapping material along a packing path; a wrapping station arranged along the packing path and where the band of wrapping material is wrapped so as to form a tubular wrap having a longitudinal development; a longitudinal sealing unit to longitudinally seal the tubular wrap in the area of an overlapping section area of the band of wrapping material; a feeding device comprising a feeding duct, around which the band of wrapping material is bent so as to form the tubular wrap and which is configured to feed, one after the other, the portions of loose product into the tubular wrap; and a transverse sealing unit, which is arranged downstream of the longitudinal sealing unit and is configured to transversely seal each tubular wrap so as to form an alternating succession of sealing sections and sections containing a portion of loose product; the packer machine is characterized in that it comprises: an upper sucking device, which is arranged between the longitudinal sealing unit and the transverse sealing unit above the packing path and has an upper suction opening facing the packing path; and a lower sucking device, which is arranged between the longitudinal sealing unit and the transverse sealing unit under the packing path and has a lower suction opening facing the packing path. a conveyor device configured to move at least one band of wrapping material along a packing path; a wrapping station arranged along the packing path and where the band of wrapping material is wrapped so as to form a tubular wrap having a longitudinal development; a longitudinal sealing unit to longitudinally seal the tubular wrap in the area of an overlapping section area of the band of wrapping material; a feeding device comprising a feeding duct, around which the band of wrapping material is bent so as to form the tubular wrap and which is configured to feed, one after the other, the portions of loose product into the tubular wrap; and a transverse sealing unit, which is arranged downstream of the longitudinal sealing unit and is configured to transversely seal each tubular wrap so as to form an alternating succession of sealing sections and sections containing a portion of loose product; the packer machine is characterized in that it comprises: an upper sucking device, which is arranged between the longitudinal sealing unit and the transverse sealing unit above the packing path and has an upper suction opening facing the packing path; and a lower sucking device, which is arranged between the longitudinal sealing unit and the transverse sealing unit under the packing path and has a lower suction opening facing the packing path. an upper sucking device, which is arranged between the longitudinal sealing unit and the transverse sealing unit above the packing path and has an upper suction opening facing the packing path; and a lower sucking device, which is arranged between the longitudinal sealing unit and the transverse sealing unit under the packing path and has a lower suction opening facing the packing path.