a strip of thermo - plastic material particularly designed to be longitudinally , permanently stretched , so as to be transformed into a container multi - packaging device having a plurality of can receiving apertures which are configured to include an outer band portion and an inner band portion from a strip with limited amount of material removed in series of narrow transversely arranged slot means . the slot means are particularly designed to produce inner band portions which are generally v - shaped and slightly stretched and outer band portions which are generally parallel to the axis of the strip and highly stretched to longitudinal orientation .