Abstract: A method and device for sequentially batch boxing products inside packaging receptacles. The method includes conveying a continuous supply flow of aligned products along a first supply line extending in a longitudinal direction and; sending m successions of n products in m rows positioned along m separate positioning sub-lines by m movements in transverse directions without a lag with respect to the continuous supply flow; collecting and assembling in the longitudinal direction the n products of each row so as to form a first batch of m×n products; sequentially boxing the m rows of n products forming the first batch inside a first packaging receptacle. The sending step intended to form a first row of a second batch starts during the collecting phase of one of the rows of n products constituting the first batch and along a separate buffer positioning sub-line adjacent to the m positioning sub-lines.