IP Library › Granted Patent US 11,819,390
Granted Patent B2
US 11,819,390 · App. 16/777,957 · Granted Nov 21, 2023

Tampon pledget for increased bypass leakage protection

Inventors: Robert Jorgensen (Middletown, DE); Keith Edgett (Middletown, DE)
Assignee: EDGEWELL PERSONAL CARE BRANDS, LLC
A61F13/208A61F13/15203A61F13/2025A61F13/2028A61F13/2057A61F13/2065A61F13/2068A61F13/2088A61L15/28A61L15/425A61L15/60A61F2013/15447
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Quick Facts
Patent No.
US 11,819,390
App. No.
16/777,957
Granted
Nov 21, 2023
Kind
B2
Abstract

There is provided a tampon pledget that includes one or more enhanced features that result in the pledget exhibiting increased bypass leakage prevention. These enhanced features may include, but are not limited to, geometry, absorption, and any combinations thereof. There is also provided one or more methods for constructing a tampon pledget having increased bypass leakage protection.

Claims (30)

1. A tampon pledget, comprising:

At least one bottom pad having a length that is between about 1 inch and about 4 inches, and a width that is between about 1 inch and about 4 inches;

at least one top pad having a width of about 2 inches and a length of about 4 inches;

a fiber weight distribution ratio of the at least one bottom pad to the at least one top pad being between about 0.75:1 and about 1.5:1; and

wherein prior to folding the at least one bottom pad and the at least one top pad to form a compressed tampon pledget, the at least one top pad and the at least one bottom pad are in a chevron, diamond, circular, oval, square, or rectangle configuration, the chevron, diamond, circular, oval, square, or rectangle configuration having an overlap portion that is formed where the at least one top pad and the at least one bottom pad overlap and a plurality of non-overlap portions that are formed where the at least one top pad and the at least one bottom pad do not overlap

wherein the chevron, diamond, circular, oval, square, or rectangle configuration is folded, compressed, and heated to form a shaped tampon pledget, the tampon pledget having insertion region having an insertion tip end and an insertion rearward end, a main body region having a main forward end and a main rearward end, and a withdrawal region having a withdrawal forward end and withdrawal rearward end, said insertion rearward end is adjacent said main forward end, and said main rearward end is adjacent said withdrawal forward end, the shaped tampon pledget has a maximum diameter of the insertion tip region and the main body region where the insertion rearward end and the main forward end meet, wherein the main body region tapers from the maximum diameter to a minimum diameter and thereafter increases to a middle diameter that is greater than said minimum diameter.

2. The tampon pledget according to claim 1 , wherein the dry weight of the tampon pledget is about 2.6 grams.

3. The tampon pledget according to claim 1 , wherein the width of the at least one bottom pad is about 2 inches.

4. The tampon pledget according to claim 1 , wherein a pad lay-up ratio of an area of the at least one bottom pad to an area of the at least one top pad area is between about 1:1.2 and about 1:2.25.

5. The tampon pledget according to claim 1 , wherein the chevron, diamond, circular, oval, square, or rectangle configuration is folded within a fluted ram.

6. The tampon pledget according to claim 1 , wherein the heating is to about 220° F.

7. The tampon pledget according to claim 1 , wherein at least one of the at least one top pad and the at least one bottom pad comprise cellulose, rayon, cotton, pulp, superabsorbent, absorbent foam, and any combinations thereof.

8. The tampon pledget according to claim 1 , wherein the tampon pledget has an average positive displacement rate that is equivalent to a volumetric rate increase of the tampon pledget in a modified syngyna absorbency test divided by a dry weight of the tampon pledget, the average positive displacement rate being greater than about 0.2 ml/min/gram.

9. The tampon pledget according to claim 8 , wherein the tampon pledget expands to a slight teardrop shape upon liquid absorption.

10. A tampon pledget, comprising:

a at least one bottom pad having a length and a width;

a at least one top pad having a width and a length;

a fiber weight distribution ratio of the at least one bottom pad to the at least one top pad being between about 0.75:1 and about 1.5:1; and

wherein prior to folding the at least one bottom pad and the at least one top pad to form a compressed tampon pledget, the at least one top pad and the at least one bottom pad are in a chevron, diamond, circular, oval, square, or rectangle configuration, the chevron, diamond, circular, oval, square, or rectangle configuration having an overlap portion that is formed where the at least one top pad and the at least one bottom pad overlap and a plurality of non-overlap portions that are formed where the at least one top pad and the at least one bottom pad do not overlap

wherein the chevron, diamond, circular, oval, square, or rectangle configuration is folded, compressed, and heated to form a shaped tampon pledget, the tampon pledget having insertion tip region having an insertion tip end and an insertion rearward end, a main body region having a main forward end and a main rearward end, and a withdrawal region having a withdrawal forward end and withdrawal rearward end, said insertion rearward end is adjacent said main forward end, and said main rearward end is adjacent said withdrawal forward end, the shaped tampon pledget has a maximum diameter of the insertion tip region and the main body region where the insertion rearward end and the main forward end meet, wherein the main body region tapers from the maximum diameter to a minimum diameter and thereafter increases to a middle diameter that is greater than said minimum diameter.

11. The tampon pledget according to claim 10 , wherein the dry weight of the tampon pledget is about 2.6 grams.

12. The tampon pledget according to claim 10 , wherein the at least one top pad has a length that is between about 2 inches and about 6 inches.

13. The tampon pledget according to claim 10 , wherein the at least one top pad has a width that is between about 1 inch and about 4 inches.

14. The tampon pledget according to claim 10 , wherein the at least one bottom pad has a length that is between about 1 inch and about 4 inches, and a width of about 1 inch and a length of about 4 inches.

15. The tampon pledget according to claim 10 , wherein a pad lay-up ratio of an area of the at least one bottom pad to an area of the at least one top pad area is between about 1:1.2 and about 1:2.25.

16. The tampon pledget according to claim 10 , wherein the chevron, diamond, circular, oval, square, or rectangle configuration is folded within a fluted ram.

17. The tampon pledget according to claim 10 , wherein the heating is to about 220° F.

18. The tampon pledget according to claim 10 , wherein at least one of the at least one top pad and the at least one bottom pad comprise cellulose, rayon, cotton, pulp, superabsorbent, absorbent foam, and any combinations thereof.

19. The tampon pledget according to claim 10 , wherein the tampon pledget has an average positive displacement rate that is equivalent to a volumetric rate increase of the tampon pledget in a modified syngyna absorbency test divided by a dry weight of the tampon pledget, the average positive displacement rate being greater than about 0.2 ml/min/gram.

20. The tampon pledget according to claim 19 , wherein the tampon pledget expands to a slight teardrop shape upon liquid absorption.