Method for at least partially unfolding flat-folded package sleeves (3, 63), - in which the flat-folded package sleeves (3, 63) are provided, - in which the package sleeves (3, 63), which are folded flat in a stack (24, 81) around at least two folding edges (6, 65) extending in the longitudinal direction of the package sleeves (3, 63), are held ready for further processing, - in which the flat-folded package sleeves (3, 63) are successively gripped on a side facing away from the stack (24, 81) by a gripper and moved, in particular pulled, by the gripper along a withdrawal transport path of the package sleeves (3, 63) with the folding edges into grooves of at least one receptacle of a moulding station, thereby at least partially unfolding the package sleeves (3, 63), - in which the package sleeves (3, 63) received with the folding edges in the grooves of the at least one receptacle are moved, in particular pressed, at least in sections by the gripper against the withdrawal transport path and/or are moved, in particular pressed, with the grooves further in the direction of the withdrawal transport path relative to the gripper and - in which the package sleeves (3, 63) moved back at least in sections against the withdrawal transport path and received with the folding edges in the grooves are moved, in particular pulled, again at least in sections by the gripper in the direction of the withdrawal transport path and/or the package sleeves (3, 63) moved further in the direction of the withdrawal transport path relative to the gripper and received with the folding edges in the grooves are moved back, in particular pulled, with the grooves against the direction of the withdrawal transport path relative to the gripper. - in which the flat-folded package sleeves (3, 63) are provided, - in which the package sleeves (3, 63), which are folded flat in a stack (24, 81) around at least two folding edges (6, 65) extending in the longitudinal direction of the package sleeves (3, 63), are held ready for further processing, - in which the flat-folded package sleeves (3, 63) are successively gripped on a side facing away from the stack (24, 81) by a gripper and moved, in particular pulled, by the gripper along a withdrawal transport path of the package sleeves (3, 63) with the folding edges into grooves of at least one receptacle of a moulding station, thereby at least partially unfolding the package sleeves (3, 63), - in which the package sleeves (3, 63) received with the folding edges in the grooves of the at least one receptacle are moved, in particular pressed, at least in sections by the gripper against the withdrawal transport path and/or are moved, in particular pressed, with the grooves further in the direction of the withdrawal transport path relative to the gripper and - in which the package sleeves (3, 63) moved back at least in sections against the withdrawal transport path and received with the folding edges in the grooves are moved, in particular pulled, again at least in sections by the gripper in the direction of the withdrawal transport path and/or the package sleeves (3, 63) moved further in the direction of the withdrawal transport path relative to the gripper and received with the folding edges in the grooves are moved back, in particular pulled, with the grooves against the direction of the withdrawal transport path relative to the gripper.