Retainable closure

1. A closure for a container, comprising:

a cover and a skirt depending from the cover;

a tamper band, wherein the skirt is disposed between the cover and the tamper band;

a first separation area extending horizontally around at least about half the circumference of the skirt;

a second separation area that includes a pair of vertical scores formed in the tamper band and extending below the first separation area to at least partially define a tab;

wherein the second separation area extends to the bottom of the tamper band; and

a pair of hinges disposed between the pair of vertical scores and the first separation area;

wherein the closure is configured to rotate about a hinge axis that extends through the pair of hinges between a closed position in which the cover blocks access to the container and an open position in which the cover allows discharge of contents from the container;

wherein the tab is configured to engage the container when the closure is in the open position to retain the closure in the open position;

wherein the pair of hinges allow movement of the closure between the closed position and the open position and also retain the skirt to the tamper band.

2. The closure of claim 1 , further comprising at least one third separation area extending horizontally below the first separation area away from a top portion of at least one vertical score to define at least one strap between the at least one third separation area and the first separation area.

3. The closure of claim 1 , wherein the pair of vertical scores extend to the bottom of the tamper band.

4. The closure of claim 3 , wherein at least one frangible bridge connects a bottom area of the tab to a bottom area of the tamper band oppositely disposed at least one of the vertical scores from the tab.

5. A closure for a container, comprising:

a cover and a skirt depending from the cover;

a tamper band, wherein the skirt is disposed between the cover and the tamper band;

wherein the cover, skirt, and tamper band are at least one of injection molded and compression molded;

a first separation area extending horizontally around a portion of a circumference of the closure between the skirt and the tamper band;

a second separation area that includes a first vertical score and a second vertical score extending downwardly below the first separation area to a bottom edge of the tamper band to form a tab between the first vertical score and the second vertical score;

wherein at least one of the first separation area, the first vertical score, and the second vertical score are formed by at least one of a cutting operation and a slitting operation; and

a pair of hinges disposed between the pair of vertical scores and the first separation area;

wherein the closure is configured to rotate about a hinge axis that extends through the pair of hinges between a closed position in which the cover blocks access to the container and an open position in which the cover allows discharge of contents from the container;

wherein the tab is configured to engage the container when the closure is in the open position to retain the closure in the open position;

wherein the pair of hinges allow movement of the closure between the closed position and the open position and also retain the skirt to the tamper band.

6. The closure of claim 5 , further comprising at least one third separation area extending horizontally below the first separation area from a top portion of at least one vertical score to define at least one strap between the at least one second separation area and the first separation area.

7. The closure of claim 5 , wherein the cover, skirt, and tamper band are substantially formed of HDPE.

8. The closure of claim 7 , wherein the cover, skirt, and tamper band are compression molded as a unitary piece that is subsequently cut or slit to form the horizontal and vertical scores.

9. The closure of claim 5 , wherein the cover, skirt, and tamper band are substantially formed of polypropylene.

10. The closure of claim 9 , wherein the cover, skirt, and tamper band are injection molded as a unitary piece that is subsequently cut or slit to form the horizontal and vertical scores.