A boxing method intended, from a continuous supply flow of similar products, for sequentially boxing batches of products inside packaging containers, the batches being formed of m rows of n products each, m and n being integers greater than or equal to 1, m*n being strictly greater than 1, the boxing method comprising a succession of steps consisting of: conveying a continuous supply flow of aligned products along a first supply line extending in a longitudinal direction; and sending, by m movements in transverse directions with no lag relative to the continuous supply flow, m successions of n products in m rows respectively positioned along m distinct positioning sub-lines, arranged to be adjacent in the first supply line; collecting and assembling in the longitudinal direction the n products of each row along m positioning sub-lines so as to form a first batch of mxn products; sequentially boxing said m rows of n products constituting the first batch, inside a first packaging container; wherein the boxing method consists of: initiating the step of sending a first succession of n products intended to form a first row of a second batch, during the phase of collecting one of the rows of n products constituting the first batch, this first succession of n products intended to form a first row of a second batch being sent, in a transverse movement with no lag relative to the continuous supply flow, along a separate buffer positioning sub-line adjacent to the m positioning sub-lines on which the m rows of n products constituting the first batch have been formed, so as to allow the collection and assembly of products constituting the first batch without interrupting or slowing the continuous supply flow of products; and initiating the step of boxing the first batch with no substantial delay after the collection and assembly of the first batch, in a manner that allows the boxing to occur without interrupting or slowing the continuous supply flow of products. conveying a continuous supply flow of aligned products along a first supply line extending in a longitudinal direction; and sending, by m movements in transverse directions with no lag relative to the continuous supply flow, m successions of n products in m rows respectively positioned along m distinct positioning sub-lines, arranged to be adjacent in the first supply line; collecting and assembling in the longitudinal direction the n products of each row along m positioning sub-lines so as to form a first batch of mxn products; sequentially boxing said m rows of n products constituting the first batch, inside a first packaging container; wherein the boxing method consists of: initiating the step of sending a first succession of n products intended to form a first row of a second batch, during the phase of collecting one of the rows of n products constituting the first batch, this first succession of n products intended to form a first row of a second batch being sent, in a transverse movement with no lag relative to the continuous supply flow, along a separate buffer positioning sub-line adjacent to the m positioning sub-lines on which the m rows of n products constituting the first batch have been formed, so as to allow the collection and assembly of products constituting the first batch without interrupting or slowing the continuous supply flow of products; and initiating the step of boxing the first batch with no substantial delay after the collection and assembly of the first batch, in a manner that allows the boxing to occur without interrupting or slowing the continuous supply flow of products. initiating the step of sending a first succession of n products intended to form a first row of a second batch, during the phase of collecting one of the rows of n products constituting the first batch, this first succession of n products intended to form a first row of a second batch being sent, in a transverse movement with no lag relative to the continuous supply flow, along a separate buffer positioning sub-line adjacent to the m positioning sub-lines on which the m rows of n products constituting the first batch have been formed, so as to allow the collection and assembly of products constituting the first batch without interrupting or slowing the continuous supply flow of products; and initiating the step of boxing the first batch with no substantial delay after the collection and assembly of the first batch, in a manner that allows the boxing to occur without interrupting or slowing the continuous supply flow of products.