A postpress system (1) and method for producing and processing product units (P), in particular printed end products (P) with printed product collections comprising a plurality of products, selected from the group of wrapping products, and a plurality of part products and/or inserts, to make route adapted stacks or packs, at least some of the printed end products (P) being product units which have been customized for specific addressees are proposed. By using feed devices (3) which each comprise a supply conveyor (31), a preparation circuit (32) with a plurality of transport units (321) and an output conveyor (33), printed products (D) are fed in a controlled fashion to the holding units (21) with reliability. A sorting device (6) with at least one directing group with at least one gate (62), a transit section (612) and at least one supply section is used to correct faults, or deviations in the product sequence from the production sequence.

The invention relates to a transport unit (1, 1a-d, 1a-d) of an overhead conveyor system (2, 2, 2), comprising an elastically deformable buffer element (11, 11, 11, 11a-d, 11a-d), which is designed to store deformation energy when under load and to release same when no longer under load.

The invention relates to a feeding device for feeding products to a conveying or processing or packaging or sorting or collecting line of an intra-logistics system, including a supply conveyor, a standby circular conveyor having a plurality of transport units, which are arranged spaced apart from one another in a variably conveyable manner, an accumulation section, in which the transport units can be accumulated, an acceleration section, in which the transport units can be accelerated. The supply conveyor is provided with a transfer point, at which the products are transferred to a respective transport unit of the standby circular conveyor. The feeding device is configured such that the feeding device delivers the products in a controlled manner to designated receiving units of the conveying or processing or packaging or sorting or collecting line.