Tamper evident system and method

1. A container, comprising:

a lid, said lid comprising a central portion, a circumferential rim and a flange extending downwards from said rim, said flange comprising an aperture at least at one location around a perimeter of said flange; and

a body, said body comprising a base and generally vertical walls extending up from said base, at least one of the generally vertical walls comprising a knob at least at one location thereof;

wherein, in a closed position of the lid over said body, said knob is received in said aperture and is seen emerging from said aperture, and, upon lifting the lid up from said closed position for the first time, said knob disengages from said aperture, thereby deforming at least one of said aperture and the flange of the lid, said deformed part testifying of a first opening of the container.

2. The container of claim 1 , wherein said body is parallelepiped in shape, or round or any combinations thereof, and said lid has a corresponding shape.

3. The container of claim 1 , wherein said walls of said body end up in a rim, and, in said closed position, said rim of said lid sits on the rim of the body.

4. The container of claim 1 , wherein a portion of said rim of the lid is of a reduced thickness underneath said aperture, and said knob, when disengaging from said aperture, forces on said portion of said rim of the lid, thereby damaging said portion of the rim of the lid.

5. The container of claim 1 , wherein said rim of the lid underneath said aperture comprises a weakening line, and said knob, when disengaging from said aperture, forces on said weakening line.

6. The container of claim 1 , wherein said rim of the lid underneath said aperture comprises plies, and said knob, when disengaging from said aperture, unfolds said plies.

7. The container of claim 1 , wherein said rim of the lid underneath said aperture comprises a radius of curvature, and said knob, when disengaging from said aperture, deforms said radius of curvature.

8. The container of claim 1 , wherein said rim of the lid underneath said aperture comprises a geometric shape, and said knob, when disengaging from said aperture, deforms said geometric shape.

9. The container of claim 1 , wherein said rim of the lid comprises at least one weakening line about said aperture, and said knob, when disengaging from said aperture, stretches the material of the rim the lid about the aperture or tears off said at least one weakening line or a combination thereof.

10. The container of claim 1 , wherein said rim of the lid comprises a break tab, said aperture being located on said break tab.

11. The container of claim 1 , wherein said wall comprises a number of knobs and said rim of the lid comprises at least the same number of apertures, at locations around the perimeter of said rim of the lid.

12. The container of claim 1 , wherein said deformed part remains attached to said lid.

13. The container of claim 1 , wherein said lid is able to be put back again into position over said body, in a closed position of the container.

14. A method of evidencing opening of a container having a body and a lid, comprising:

providing a lid comprising a central portion and a flange extending generally downwards from the central portion, and providing the flange at least at one location thereof, with an aperture;

providing a body of a shape corresponding to the lid, and comprising a base and lateral walls extending up from the base and ending up in a rim, and providing a knob at least at one location of the lateral walls; and

positioning the lid over the body so that the knob is received in the aperture and the knob is seen emerging from the aperture, in a closed never opened position of the container;

whereby, upon lifting the lid up from the closed position, the knob disengages from the aperture, thereby deforming at least one of the aperture and the rim of the lid.

15. A container, comprising:

a lid, said lid comprising a central portion, a circumferential rim, said rim comprising an aperture at least at one location around a perimeter of said rim; and

a body, said body comprising a base and lateral walls extending up from said base and ending up in a rim, said rim comprising a knob at least at one location thereof;

wherein, in a closed position of the lid over said body, said knob is received in said aperture and is seen emerging from said aperture, and, upon lifting the lid up from said closed position for the first time, said knob disengages from said aperture, thereby deforming at least one of said aperture and the rim of the lid, said deformed part testifying of a first opening of the container; and

wherein a portion of said rim of the lid underneath said aperture is of a reduced thickness and/or comprises one of: i) a weakening line; ii) plies, iii) a radius of curvature and iv) a geometric shape; and said knob, when disengaging from said aperture, deforms said portion of said rim of the lid.