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MOVING IDEAS Secondary packaging Wraparound Case Packing: techniques, solutions, comparisons and the benefits of the technology that has revolutionised the packaging industry and distribution chain. Text by Vincent Bandini, Massimo Beretta, Manuel Bolzoni, Giuseppe Buttazzi, Gabriele Folli OCME Competence Library

Secondary Packaging Wraparound Case Packing: techniques, solutions, comparisons and the benefits of the technology that has revolutionised the packaging industry and distribution chain. Contents Secondary packaging: why it is necessary to protect the product Technology compared: wraparound case or American case? OCME wraparound packing Altair, the synthesis of over 40 years experience in wraparound technology Container infeed, pack selection, blank magazine, dispensing system Partition insertion, format changes Wraparound packing and the Altair: the perfect combination to cut your costs...

Secondary packaging Why it is necessary to protect the product “Concern for man and his fate must always form the chief interest of all technical endeavours. Never forget this in the midst of your diagrams and equations.” Albert Einstein (1879-1955) econdary packaging was originally developed to protect the product, or to make it easier to hold several items together. In fact, these features remain important for the packaging industry today, but in addition we now have to consider other factors such as marketing, logistics and, in some cases, the technological process. Nowadays in...

OCME Secondary packaging Technology compared: wraparound case or American case? ase packing technology is divided into two main systems: Wraparound case packing and the top-opening American case. The difference between the two concepts is very simple: the American case is erected prior to being filled with the product, whereas the wraparound system forms and seals the case automatically around the product. The two types of case may appear similar and the material used is often the same, but there are significant differences which should be carefully considered before deciding on one system...

Wraparound Case The American Case involves the use of three machines which serve to erect the box, insert the bottles or other containers into it, and finally to close up the case. The case is normally fairly large in size in comparison to its contents, and this can cause greater internal instability. Partitions are often used to reduce the risks of friction and breakage between the containers. The pack obtained with the wrap-around case packer is, as its name suggests, a piece of cardboard wrapped around a group of containers such as bottles, cans, multi-packs, etc. The single machine...

OCME Wraparound Case Packing ot all manufacturers of wraparound case packers use the same working logic. Ocme in particular has developed its own solution for gluing the pack with the long side of the case leading. What does this mean? A cardboard case is a rectangular block, the sides of which (seen from above) are not equal. A case can run through the case packing machine with either the long or the short side leading. OCME’s solution guarantees that the side flaps are closed as securely as possible with a jet of glue emitted from suitably positioned spray guns. Apart from the facility to...

Wrap-around system used by competitors Seen from the glue nozzles Useful area of glue application The packaging solution with short side leading forces the glue jets to work with the minimum margin of tolerance, also the position of the jets is penalised because of their elevated angle in respect to the case. The result is a glue deposit which is often not suitable for guaranteeing an adequate seal for the case. Time margin available to achieve optimum jet Duration of packaging cycle

OCME Secondary packaging Altair, the synthesis of over 40 years’ experience in wrap-around technology CME’s first wraparound case packer model came out in 1964 and was installed years ahead of rival solutions. Since then, Ocme has followed a programme of continual development and improvement which has led to the Altair range we have today. The Altair is synonymous with wrap-around technology and Ocme machines are known to be among the most reliable, efficient and productive in the world. This is a source of pride for Ocme and also acts as a motivation to maintain an exceptional level of...

Technologies compared American case Wrap-around case packer short side leading OCME wrap-around case packer long side leading Space occupied on the floor Capability to handle trays Shrinkwrapping on the same machine Compactness of case Necessity for partitions Glue consumption Glue effectiveness Time required for format changes Cost of format changes Re-use of cases Reduction in weight of glass This table provides an outline of the advantages and disadvantages of the different case packing technologies. We have considered the main features in relation to costs (both in terms of raw...

OCME Secondary packaging Figure 5 Robotic gripper picks the cardboard blanks directly from the pallet. This option offers greater autonomy in feeding materials to the wraparound packer. Figure 6 The loading conveyor delivers stacks of blanks from the robot and feeds them periodically to the magazine.

Container Infeed Fundamental to the success of the machine is the design of the infeed - to avoid blockages in the flow of containers and to ensure smooth size change-overs without the need to carry out further adjustments. In this regard, the Altair benefits from certain unique features which enhance its operation: profiled guides that are specially designed for each container shape, flow regulation systems which prevent jerky stops and starts, and a channelising bridge which is only activated when a blockage is apparent. Product Selection The aim is to select the necessary number of...

OCME Secondary packaging Coupling of containers – blanks The aim is to guarantee the coupling of the containers to the blank without knocking the containers in any way and avoiding breakages or damage; furthermore the set of containers needs to be simultaneously held together on all four sides without any of the containers falling or the collation coming apart. On the Altair machine, the position of the blank and the containers is controlled electronically, so as to ensure that they run at exactly the same pace. The parameters for the different configurations are automatically set by the...