Bundle of containers, in particular bottles, cans or the like

Assembly comprising:

• a structure for holding containers, comprising at least one base wall intended to support one or more containers and at least one lateral wall, extending transversely and perimetrically from the base wall to define a housing compartment open at the upper part and intended for supporting the containers, the housing compartment being impermeable for receiving a predefined amount of a coolant, said structure for holding containers being made of a single piece, starting from an impermeabilized cardboard sheet with paraffin and/or at least one resin and/or at least one other hydrophobic substance, or from a plasticized cardboard sheet, or from an optionally rigid or semi-rigid plastic sheet;
• at least one container;
• at least one auxiliary container, each having a greater height with respect to the height of at least one container;
• a wrapping made of thermoretractable plastic material winding the structure for holding containers and the containers arranged therein, the wrapping engaging at the upper part at least one auxiliary containers so as to delimit with the at least one auxiliary container and at least one containers an upper chamber for housing the coolant, the wrapping comprising at least one access opening, for the introduction of the coolant in the housing compartment of the structure for holding containers, the access opening being defined in the wrapping by at least one structural weakening line, the wrapping being breakable or tearable along the weakening line for the formation of the access opening, the wrapping further comprising an adhesive disposed on the wrapping adjacent to the access opening, wherein the adhesive is constructed and arranged to close the access opening.