Method of tamper proofing a container assembly with an easily opened tamper evident shrink band

A method for tamper proofing a container assembly, which assembly includes a container and a cap, the cap being removably attached to the container, the container having a bottom, side walls, a mouth, and a throat region adjacent to the mouth, the cap having a top, side walls, and bottom edge adjacent to the throat region of the container when assembled on the container, the method comprising the steps of:

• providing a planar sheet of thermoplastic material having at least one tear strip defined by two parallel perforated lines there-through which terminate in at least one die cut, the planar sheet also having a pair of seam regions;
• folding the planar sheet of material at the seam regions and joining the seams to make a continuous tube of material which can then be cut in desired lengths;
• providing a series of registration marks on the planar sheet of material for aligning a cut tube of material on an assembled container and cap, whereby the tear strip overlays the throat region of the container and bottom edge of the cap when in place on the container, the tear strip also extending over the top edge of the cap so that the die cut is positioned over the top of the cap;
• heat shrinking the tube of material in a desired position on the container and cap assembly to thereby form a band of material, the step of heat shrinking, as well as the proper registration of the material on the container by means of the registration marks, causes the die cut to separate and form a tab which protrudes from the planar surface of the sheet of material and which can be grasped by a user in order to more easily separate the band from the container.