A method of causing the packing of one or more piece goods in one or more bag units, where said bag units are, in a selected transport direction, oriented after one another and mutually united with the aid of two bands, each allocated to an appointed bag side, with a thickened portion, where said method comprises the following steps; a. causing a utilisation of a first means, whereby each one of said bag units (P1; P2), from a folded and/or united state, becomes openable by causing said respective bag side allocated band with thickened portion to pass rails, oriented at a distance from one another, or similar arrangements, b. causing a utilisation of a second means (2; 2') in order to, in thus opened bag units, according to "a" above, permit the insertion of one or more piece goods into an opened inner space and where said second means (2; 2') is oriented within a selected extent of said first means, according to "a" above, c. causing a utilisation of a third means, whereby each one of said bag units is closed, in order thereby to permit a closure within said inner space of said one or more piece goods, one such closure being selected within or adjacent a bag allocated closure zone, where this closure zone is selected within a bag unit allocated upper edge portion, however under said thickened portion, d. causing a utilisation of a fourth means, adapted to clip and/or cut off a closed bag unit within or above said closure zone, however under said thickened portion, in order thereby to permit a parting and separation of a closed, piece goods containing, bag from its allocated thickened portion and a subsequent, counting in said selected transport direction, closed bag unit, characterised in that each of the two bands is formed as a carrier strip (30; 30') having an upper longitudinally oriented thickened portion and a lower longitudinally oriented retaining zone, where said lower retaining zone is caused to cooperate with an upper retaining zone for an edge portion adjacent a bag allocated opening, that said carrier strip (30; 30') and said bag, in a coordinated position, form a bag unit, and that a clipping and/or cutting off the bag unit, according to "d" above, takes place over said closure zone and within the region of or adjacent the region of said retaining zones, and that onto one side of an elongate thin web or plastic film there are applied two parallel edge-related threads with a selected small space or distance between these, and where the threads are oriented centrally to said thin web or film and that a bifurcation of said thin web or film creates each, one of two, carrier strip (30; 30'). a. causing a utilisation of a first means, whereby each one of said bag units (P1; P2), from a folded and/or united state, becomes openable by causing said respective bag side allocated band with thickened portion to pass rails, oriented at a distance from one another, or similar arrangements, b. causing a utilisation of a second means (2; 2') in order to, in thus opened bag units, according to "a" above, permit the insertion of one or more piece goods into an opened inner space and where said second means (2; 2') is oriented within a selected extent of said first means, according to "a" above, c. causing a utilisation of a third means, whereby each one of said bag units is closed, in order thereby to permit a closure within said inner space of said one or more piece goods, one such closure being selected within or adjacent a bag allocated closure zone, where this closure zone is selected within a bag unit allocated upper edge portion, however under said thickened portion, d. causing a utilisation of a fourth means, adapted to clip and/or cut off a closed bag unit within or above said closure zone, however under said thickened portion, in order thereby to permit a parting and separation of a closed, piece goods containing, bag from its allocated thickened portion and a subsequent, counting in said selected transport direction, closed bag unit,