Slitting tool
A tamper-evident closure is disclosed, having a skirt, threads on an interior of the skirt, and a tamper-evident band secured to the closure body by frangible bridges along a circumferential lower surface of the closure. The band and the closure have a plurality of equidistant vertical upper and lower teeth along an interior wall. Further the subject invention includes a mandrel for use in cutting slits in tamper-evident closures. The mandrel is supported for rotational movement within a closure, and comprises a disc with a circumferential surface with a plurality of equidistant slots for meshing with complementary teeth on the interior surface of the closure.
1. A tamper-evident closure having a skirt, threads on an interior of said skirt, and a tamper-evident band secured to a closure body by frangible bridges along a circumferential lower surface of said skirt, said closure and said band each having a plurality equidistant vertical teeth respectively extending from an interior wall surface, said teeth extending on said interior of said skirt from a location below said threads to an interior of said tamper-evident band, and having a rectangular profile.
2. The tamper-evident closure of claim 1 wherein said teeth on said skirt and said teeth on said tamper evident band are vertically aligned.
3. The tamper-evident closure of claim 2 wherein said vertically aligned teeth form the frangible bridges.
4. A mandrel for use in cutting slits in tamper-evident closures, said mandrel being supported for contact with an interior surface of a closure, and comprising a disc having a thickness, and a circumferential exterior surface, said circumferential exterior surface having a plurality of equidistant vertical slots for meshing with complementary vertical teeth on the interior surface of the closure.
5. The mandrel of claim 4 wherein said closure include folded tabs, and said disc has an outside diameter smaller than the inside diameter of the folded tabs.
6. The mandrel of claim 4 wherein the closure rotates about the mandrel.
7. The mandrel of claim 4 wherein the mandrel rotates within the closure.
8. The mandrel of claim 4 wherein the circumferential surface of the disc has a horizontal slot.
9. A tamper-evident closure having a skirt, threads on an interior of said skirt, and a tamper-evident band secured to a closure body by frangible bridges along a circumferential lower surface of said skirt, said closure and said band each having a plurality of equidistant vertically aligned teeth respectively along an interior wall, said teeth extending on said interior of said skirt from a location below said threads to an interior of said tamper-evident band to form the frangible bridges.