Method and apparatus for forming stacks of products from blanks made of folded or unfolded product like paper, pulp or

are fed to a method for forming stacks of products (2) of folded or unfolded product blanks (4), in which the to be stacked product blanks (4) successively to a stacking surface (15) and parked there edgewise, to a particularly high in a particularly simple and reliable way flexibility in the formation of the product stack (2) also allowed with only slight strain of the holding material to be processed, so that product blanks (4) made of pulp or the like can be reliably processed. For this purpose the product blanks (4) According to the invention it back temporarily by a duct wall (20) of a discharge channel (17) is supported, wherein a separating element (22) when parking the product blanks (4) in such a manner between two successive product blanks (4) is inserted, that the between the separating element (22) and the channel wall (20) product stack forming (2) a predetermined number of product blanks (4), and wherein the channel wall (20) is opened after the insertion of the separating element (22), so that between product stack formed separating element (22) and duct wall (20) (2) in the discharge channel (17) can be inserted.