Tampon with extended groove forms
View Patent ↗The present invention relates to an intravaginal tampon for feminine hygiene includes a generally cylindrical absorbent pledget and a withdrawal element operatively connected to the generally cylindrical pledget proximate to the withdrawal end thereof. The absorbent pledget includes a mass of fibers compressed into a self sustaining shape and a sheet-like fluid-permeable cover substantially enclosing the mass of fibers. The absorbent pledget has formed thereon or therein a plurality of detached groove forms. At least two of said detached groove forms each has a length, measured along the groove, that is at least 150% of the length of the pledget; each has a major axis having a generally longitudinal orientation; and each has a turn proximate to at least one of the insertion end and the withdrawal end.
1. An intravaginal tampon for feminine hygiene comprising:
a) a generally cylindrical absorbent pledget having a length, a longitudinal axis, an insertion end, and a withdrawal end and comprising
i) a mass of fibers compressed into a self sustaining shape and
ii) a sheet-like fluid-permeable cover substantially enclosing the mass of fibers;
b) a withdrawal element operatively connected to the generally cylindrical pledget proximate to the withdrawal end thereof;
wherein (1) the absorbent pledget comprises a plurality of detached groove forms, (2) at least two of said detached groove forms
(i) each has a length, measured along the groove, that is at least 150% of the length of the pledget;
(ii) each has a major axis having a generally longitudinal orientation; and
(iii) each has a turn proximate to at least one of the insertion end and the withdrawal end.
2. The tampon of claim 1 wherein the turn of the groove forms is disposed proximate to the insertion end of the pledget.
3. The tampon of claim 1 wherein the turn of the groove forms is disposed proximate to the withdrawal end of the pledget.
4. The tampon of claim 1 wherein at least one groove form has a turn disposed proximate to each of the withdrawal end and the insertion end of the pledget to form a discrete surface zone bounded by such groove form.
5. The tampon of claim 1 wherein at least one groove form comprises three groove segments, wherein:
i) each groove segment has a generally longitudinal orientation;
ii) a first groove segment links with a second groove segment proximate the insertion end of the pledget, and a third groove segment links with the second groove segment proximate the withdrawal end of the pledget to form a discrete groove form having a general shape selected from the group consisting of “N-shaped” and inverted “N-shaped.”
6. The tampon of claim 1 wherein the pledget comprises at least one additional groove disposed between two groove forms.
7. The tampon of claim 6 , wherein the at least one additional groove is oriented substantially longitudinally.
8. The tampon of claim 1 contained in an applicator.
9. The tampon of claim 1 , wherein the groove form extends at least 10% of the radius into the pledget.
10. The tampon of claim 1 formed by molding a compressed tampon in a mold having an inner surface patterned with raised elements capable of forming at least one shallow detached groove form.
11. The tampon of claim 1 formed by calendering a compressed tampon in the nip between one or more anvil rolls and a calendering roll having an embossed pattern corresponding to a desired detached groove form.