TAMPON PLEDGET FOR INCREASED BYPASS LEAKAGE PROTECTION

• US 20160256330A1
• Filed: 05/18/2016
• Published: 09/08/2016
• Est. Priority Date: 11/08/2006
• Status: Active Grant

• Current Assignee: Edgewell Personal Care Brands, LLC (Edgewell Personal Care Company)
• Original Assignee: Edgewell Personal Care Brands, LLC (Edgewell Personal Care Company)
• Inventors: Jorgensen, Robert, Edgett, Keith
• Granted Patent: US 9,687,389 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61F 13/15203 Properties of the article, e.g. stiffness or absorbency chemical aspects A61L15/00
• CPC Class Codes: A61F 13/2025 adapted to change of shape once expelled of the applicator
• CPC Class Codes: A61F 13/2028 adapted to change of shape after absorption of liquid
• CPC Class Codes: A61F 13/2057 made of foam
• CPC Class Codes: A61F 13/2065 Tampons folded from sheets of material A61F13/206 takes precedence
• CPC Class Codes: A61F 13/2068 Tampons made from several layers A61F13/2065, A61F13/206 take precedence
• CPC Class Codes: A61F 13/208 having means for avoiding leakage, e.g. liquid impermeable withdrawal end A61F13/204 takes precedence
• CPC Class Codes: A61F 13/2088 shaping the tampon by compressing
• CPC Class Codes: A61F 2013/15447 Fibre dimension, e.g. denier or tex
• CPC Class Codes: A61L 15/28 Polysaccharides or their derivatives A61L15/225 takes precedence
• CPC Class Codes: A61L 15/425 Porous materials, e.g. foams or sponges
• CPC Class Codes: A61L 15/60 Liquid-swellable gel-forming materials, e.g. super-absorbents

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

1. (canceled)

2. A tampon pledget for a super absorbency tampon, comprising:

a first pad;

a second pad;

a fiber weight distribution ratio of the first pad to the second pad being between about 0.75;

1 and about 1.5;

1; and

wherein prior to folding the first pad and the second pad to form a compressed tampon pledget, the second pad and the first pad are in a cross-pad configuration, the cross-pad configuration having an overlap portion that is formed where the second pad and the first pad overlap and a plurality of non-overlap portions that are formed where the second pad and the first pad do not overlap,

wherein the cross-pad configuration is folded and compressed to form a tampon pledget with a generally cylindrical shape having a main body region, an insertion end, and a bottom end, the compressed tampon pledget having a greater absorption potential near the bottom end of the tampon pledget, the tampon pledget having 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 0.145 ml/min/gram and resulting in an expansion of the tampon pledget to a slight teardrop shape upon liquid absorption.

3. The tampon pledget according to claim 2, wherein the average positive displacement rate is greater than about 0.2 ml/min/gram.

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

5. The tampon pledget according to claim 2, wherein the t second op pad has a length that is between about 2 inches and about 6 inches.

6. The tampon pledget according to claim 5, wherein the second pad has a width that is between about 1 inch and about 4 inches.

7. The tampon pledget according to claim 6, wherein the second pad has a width of about 2 inches and a length of about 4 inches.

8. The tampon pledget according to claim 7, wherein the first pad has 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.

9. The tampon pledget according to claim 6, wherein a pad lay-up ratio of an area of the first pad to an area of the second pad area is between about 1:

1.2 and about 1;

2.25.

10. The tampon pledget according to claim 2, wherein a pad lay-up ratio of an area of the first pad to an area of the second pad area is between about 1:

1.2 and about 1;

2.25.

11. The tampon pledget according to claim 2, wherein the first pad has a length that is between about 1 inch and about 4 inches.

13. The tampon pledget according to claim 2, wherein the compressed tampon pledget the average positive displacement rate being greater than about 0.2 ml/min/gram.

12. The tampon pledget according to claim 12, wherein the first pad has a width that is between about 1 inch and about 4 inches.

14. A tampon pledget for a super absorbency tampon, comprising:

a 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;

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

a fiber weight distribution ratio of the bottom pad to the top pad being between about 0.75;

1 and about 1.5;

1; and

wherein prior to folding the bottom pad and the top pad to form a compressed tampon pledget, the top pad and the bottom pad are in a cross-pad configuration, the cross-pad configuration having an overlap portion that is formed where the top pad and the bottom pad overlap and a plurality of non-overlap portions that are formed where the top pad and the bottom pad do not overlap,

wherein the cross-pad configuration is folded, compressed, and heated to form a tampon pledget with a generally cylindrical shape having a main body region, an insertion end, and a bottom end, the compressed tampon pledget having a greater absorption potential near the bottom end of the tampon pledget, the tampon pledget having 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 and resulting in an expansion of the tampon pledget to a slight teardrop shape upon liquid absorption.

15. The tampon pledget according to claim 14, wherein the dry weight of the tampon pledget is about 2.6 grams.

16. The tampon pledget according to claim 14, wherein the width of the bottom pad is about 2 inches.

17. The tampon pledget according to claim 14, wherein a pad lay-up ratio of an area of the bottom pad to an area of the top pad area is between about 1:

1.2 and about 1;

2.25.

18. The tampon pledget according to claim 14, wherein the cross-pad configuration is folded within a fluted ram.

19. The tampon pledget according to claim 18, wherein the heating is to about 220°

F.

20. The tampon pledget according to claim 14, wherein at least one of the top pad and the bottom pad comprise cellulose, rayon, cotton, pulp, superabsorbent, absorbent foam, and any combinations thereof.

21. A tampon pledget for a tampon, comprising:

a bottom pad having a length that is between about 1 inch and about 4 inches, a width in a range from about 1.5 inches to about 3 inches;

a top pad having a length in a range of 3.5 inches to 5 inches and a width in a range from about 1.5 inches to about 3 inches;

a fiber weight distribution ratio of the bottom pad to the top pad being between about 0.75;

1 and about 1.5;

1; and

wherein prior to folding the bottom pad and the top pad to form a compressed tampon pledget, the top pad and the bottom pad are in a cross-pad configuration, the cross-pad configuration having an overlap portion that is formed where the top pad and the bottom pad overlap and a plurality of non-overlap portions that are formed where the top pad and the bottom pad do not overlap one,

wherein the cross-pad configuration is folded, compressed, and heated to form a generally cylindrical tampon pledget having an insertion end and a bottom end, the compressed tampon pledget having a greater absorption potential near the bottom end of the tampon pledget, the tampon pledget having 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 and resulting in an expansion of the tampon pledget to a slight teardrop shape upon liquid absorption.

22. The tampon pledget according to claim 21, wherein the dry weight of the tampon pledget is about 2.6 grams.

23. The tampon pledget according to claim 22, wherein the top pad has a width of about 2 inches.

24. The tampon pledget according to claim 23, wherein the bottom pad has a width of about 2 inches.

25. The tampon pledget according to claim 21, wherein the top pad has a width of about 2 inches.

26. The tampon pledget according to claim 25, wherein the bottom pad has a width of about 2 inches.

27. The tampon pledget according to claim 21, wherein a pad lay-up ratio of an area of the bottom pad to an area of the top pad area is between about 1:

1.2 and about 1;

2.25.

28. The tampon pledget according to claim 21, wherein the cross-pad configuration is folded within a fluted ram.

29. The tampon pledget according to claim 21, wherein the heating is to about 220°

F.