Shaped tampon
A shaped tampon with a groove pattern and a combination of external shapes varying radially and longitudinally.
1. Shaped tampon, having a longitudinal axis, an insertion portion with an insertion tip, a withdrawal portion with a withdrawal end, the insertion and withdrawal portions being connected through a central portion, and each portion comprising a plurality of grooves, a contour of said insertion portion in an axial cross section plane is an ellipse, the said ellipse having a major axis and a minor axis and a maximal axial cross section, and wherein the major axis is not equal to the minor axis;
the contour of said insertion portion is curved in at least one longitudinal cross section plane, and the grooves on said insertion portion extend from the central portion to the insertion tip and are merged in a dome shaped insertion tip, wherein at least 2 pairs of grooves on the insertion portion are converging each respectively to 1 groove on the withdrawal portion through the said shoulder located on the central portion.
2. Shaped tampon according to claim 1 , wherein the longitudinal opposite sides of the contour of said withdrawal portion according to a longitudinal cross section plane are substantially parallel.
3. Shaped tampon according to claim 1 , wherein the contour of said withdrawal portion according to an axial cross section plane is substantially circular.
4. Shaped tampon according to claim 1 , wherein the said central portion contains a shoulder at which the insertion portion and withdrawal portion transition.
5. Shaped tampon according to claim 1 , wherein the said maximal axial cross section of the insertion portion is located, along the longitudinal axis, between the said central portion and 10 mm from the insertion tip.
6. Shaped tampon according to claim 1 , wherein the minimal diameter of said maximal axial cross section of the insertion portion is equal or inferior to the diameter of said withdrawal portion, according to an axial cross section.
7. Shaped tampon according to claim 1 , wherein the ratio between the minimal diameter and the maximal diameter of said maximal axial cross section of the insertion portion, according to an axial cross section, ranges from 1:1 to 1:4.
8. Shaped tampon according to claim 7 , wherein the ratio between the minimal diameter and the maximal diameter of said maximal axial cross section of the insertion portion, according to an axial cross section, ranges from 1:1.5 to 1:2.5.
9. Shaped tampon according to claim 8 , wherein the ratio between the minimal diameter and the maximal diameter of said maximal axial cross section of the insertion portion, according to an axial cross section, ranges from 1:1.7 to 1:2.0.
10. Shaped tampon according to claim 1 , wherein at least two of the grooves present on the said insertion portion are offset from the grooves present on the said withdrawal portion.
11. Shaped tampon according to claim 1 , wherein the number of grooves on the insertion portion is from 3 to 12, and the number of grooves on the withdrawal portion is from 3 to 12.
12. Shaped tampon according to claim 11 , wherein the number of grooves on the insertion portion is from 6 to 10, and the number of grooves on the withdrawal portion is from 6 to 10.
13. Shaped tampon according to claim 1 , wherein at least 2 grooves on the insertion portion are converging each respectively to one groove on the withdrawal portion, through the said shoulder located on the central portion.
14. Shaped tampon according to claim 1 , wherein the said 2 grooves on the withdrawal portion that are respectively converging to 2 pairs of grooves on the insertion portion, are located in a plane that is defined by 2 axes:
the longitudinal axis and
the ellipse minor axis, of the said maximal axial cross section of the insertion portion.
15. Shaped tampon according to claim 1 , wherein at least one groove on the withdrawal portion is not converging to any groove on the insertion portion.
16. Shaped tampon according to claim 1 , wherein the grooves on the insertion portion are about evenly distributed.
17. Shaped tampon according to claim 1 , wherein the fiber density of the insertion portion is superior or equal to the fiber density of the withdrawal portion.