Multiple-fill/chamber softgel die
The invention provides a die suitable for producing a multi-chamber softgel capsule. The die comprises a die pocket defined by a die pocket wall and a bottom surface. The die comprises one or more partitioning walls dividing the die pocket into two or more chambers The top of the land of the partitioning walls have a lowest point that is lower than the plane formed by the top of the land along the perimeter of the die pocket wall by a gap. A die roll comprising a plurality of the dies is also provided, as well as rotary-die encapsulation machine comprising the die roll.
1. A die for a multi-chamber softgel capsule, the die comprising:
a die pocket defined by a die pocket wall and a bottom surface; and
one or more partitioning walls dividing the die pocket into two or more chambers, wherein
the die pocket wall and the one or more partitioning walls have their respective top sections defined as lands,
a top of the land of the perimeter of the die pocket wall is in a plane,
a lowest point of the top of the land of the one or more partitioning walls is lower than the plane by a gap;
at least one of the one or more partitioning walls has a recess in the top of its land; and
a size of the gap is less than a thickness of one gel ribbon used to make the softgel capsule such that two gel ribbons used to make the softgel capsule are pressed tightly together by the tops of the lands of the partitioning walls of the pair of mated dies.
2. The die of claim 1 , wherein the top of at least one of the lands has a shape selected from flat, round, curved, plateaued, and angled.
3. The die of claim 1 , further comprising at least one air hole in each chamber.
4. The die of claim 1 , wherein the one or more partitioning walls are perpendicular to the plane.
5. The die of claim 1 , further comprising a twist-off cap.
6. The die of claim 5 , further comprising one discharge channel in fluid connection with each chamber.
7. The die of claim 6 , wherein the discharge channels are separated from the twist-off cap by a channel wall.
8. The die of claim 7 , wherein a height of the channel wall is lower than a height of a highest point of the die pocket wall, and is higher than a height of the one or more partitioning walls.
9. The die of claim 1 , wherein each said one or more partitioning walls has a shape selected from a straight line and a curved line when viewed from above the die.
10. The die of claim 1 , having two or more partitioning walls configured in parallel to one another.
11. The die of claim 1 , having two or more partitioning walls that intersect with each other to form four or more chambers.
12. The die of claim 1 , wherein the one or more partitioning walls have a thickness of from about 0.254 mm to about 2.54 mm.
13. The die of claim 1 , wherein at least one of the one or more partitioning walls has a thickness that decreases from a portion proximate to the bottom surface to the land of the at least one partitioning wall.
14. The die of claim 1 , including a plurality of partitioning walls that intersect to form a shape of a star or a grid when viewed from above.
15. The die of claim 1 , wherein a size of the gap is in a range of from about 0.254 mm to about 2.54 mm and the gap is less than about 95% of a thickness of a gel ribbon suitable to be used with the die.
16. The die of claim 1 , wherein the die pocket has the shape of a half or portion of one of a sphere, an oval, a cuboid, a cube, a rounded cuboid, a rounded cube, a heart, a water drop, a fish, a bear, or a pear.
17. The die of claim 1 , wherein the die pocket has the shape of one of a cone or pyramid, and the pyramid is selected from three-sided, four-sided, five-sided, six-sided, eight-sided and ten-sided pyramids.
18. The die of claim 1 , wherein at least one of the two or more chambers has a different size than another of the two or more chambers.
19. The die of claim 1 , wherein the top of the land of the partitioning wall has a recess that is a crescent shape as viewed in a side view.
20. A die roll having a surface comprising a plurality of the dies of claim 1 .
21. The die roll of claim 20 , wherein the plurality of the dies are arranged in from about 5 to 30 rows on the surface.
22. A rotary-die encapsulation machine comprising at least one die roll of claim 20 .
23. A multi-chamber softgel capsule produced using the die of claim 1 , wherein the multi-chamber softgel capsule has two or more chambers separated by one or more barrier seals.
24. A pair of mated dies for producing a multi-chamber softgel capsule, wherein each of the pair of mated dies comprises:
a die pocket defined by a die pocket wall and a bottom surface; and
one or more partitioning walls dividing the die pocket into two or more chambers,
wherein the die pocket wall and the one or more partitioning walls have their respective top sections defined as lands,
the partitioning walls of the pair of mated dies have heights such that there is a gap between a top of the land of one said partitioning wall of one of the dies and the top of the land of at least one of the partitioning walls of the other die;
at least one of the one or more partitioning walls has a recess in the top of its land; and
a size of the gap is less than a thickness of one gel ribbon used to make the softgel capsule such that two gel ribbons used to make the softgel capsule are pressed tightly together by the tops of the lands of the partitioning walls of the pair of mated dies.
25. The pair of mated dies of claim 24 , wherein a size of the gap between the top of the land of the partitioning walls of the pair of mated dies is in a range from about 0.508 mm to about 5.08 mm and the gap between the top of the land of the partitioning walls of the pair of mated dies is less than about 95% of a total thickness of a gel ribbon located between the pair of mated dies.