Tampon and method for making the same

Patent metadata

Field	Value
Publication number	US-11071656-B2
Application number	US-201715805415-A
Country	US
Kind code	B2
Filing date	Nov 7, 2017
Priority date	Nov 7, 2016
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

An absorbent tampon is disclosed herein. The absorbent tampon strikes a balance between fluid distribution and expansion to reduce the likelihood of kinetic leakage and bypass leakage. The tampons have a fluid kinetic value “FKV” and a dynamic expansion value which are associated with their respective Syngyna ratings.

First claim

What is claimed is:

1. An absorbent tampon comprising a mass of absorbent material, the tampon further comprising an insertion end and a withdrawal end disposed opposite the insertion end, a top adjacent the insertion end, a bottom adjacent the withdrawal end, and a middle segment disposed between the top and the bottom, wherein a portion of the middle segment of the tampon has a Fluid Kinetic Value of less than 35, according to the Fluid Kinetics Testing Test Method, and an average dynamic expansion of greater than 18.7 mm, according to the Dynamic Expansion Test Method.

2. The absorbent tampon of claim 1 , wherein the mass of absorbent material comprises between about 50 percent to about 100 percent trilobal rayon fibers and between about 0 percent and about 50 percent round rayon fibers.

3. The absorbent tampon of claim 2 , wherein the trilobal rayon fibers have a dtex of between about 3.0 and about 4.5.

4. The absorbent tampon of claim 2 , wherein each of the trilobal fibers and round fibers have a spin finish of about 0.06% to about 0.12%.

5. The absorbent tampon of claim 2 , wherein the average dynamic expansion is between about 18.7 and about 21 mm, according to the Dynamic Expansion Test Method.

6. The absorbent tampon of claim 1 , wherein the mass of absorbent material is needle punched.

7. The absorbent tampon of claim 1 , wherein the mass of absorbent material is spunlaced.

8. The absorbent tampon of claim 1 , wherein the Fluid Kinetic Value is between about 2 to about 30, according to the Fluid Kinetics Testing Test Method.

9. The absorbent tampon of claim 1 , wherein the Fluid Kinetic Value is between about 2 and about 15, according to the Fluid Kinetics Testing Test Method.

10. The absorbent tampon of claim 1 , wherein the average dynamic expansion is greater than 19.5 mm, according to the Dynamic Expansion Test Method.

11. The absorbent tampon of claim 1 , wherein the mass of absorbent material has a basis weight of between about 200 gsm to about 1200 gsm.

12. The absorbent tampon of claim 11 , wherein the mass of absorbent material comprises one layer of material.

13. The absorbent tampon of claim 11 , wherein the mass of absorbent material comprises more than one layer of material.

14. The absorbent tampon of claim 13 , wherein each of the layers of material of the mass of absorbent material is spunlaced.

15. The absorbent tampon of claim 1 , wherein the average dynamic expansion at the bottom of the tampon is at least 18.9, according to the Dynamic Expansion Test Method.

16. An absorbent tampon comprising a mass of absorbent material, the tampon further comprising an insertion end and a withdrawal end disposed opposite the insertion end, a top adjacent the insertion end, a bottom adjacent the withdrawal end, and a middle segment disposed between the top and the bottom, wherein a portion of the middle segment of the tampon has a Fluid Kinetic Value of less than 11, according to the Fluid Kinetics Testing Test Method, and an average dynamic expansion of greater than 15.5 mm, according to the Dynamic Expansion Test Method.

17. The absorbent tampon of claim 16 , wherein the Fluid Kinetic Value is between about 2 to about 10, according to the Fluid Kinetics Testing Test Method.

18. The absorbent tampon of claim 16 , wherein the average dynamic expansion is between about 16 mm and about 18 mm, according to the Dynamic Expansion Test Method.

19. The absorbent tampon of claim 16 , wherein the average dynamic expansion at the bottom of the tampon is at least 15.5 mm, according to the Dynamic Expansion Test Method.

20. The absorbent tampon of claim 16 , wherein the absorbent tampon has an absorbent capacity by the standard Syngyna test of between about 6 grams to about 9 grams.

Assignees

• Procter & Gamble

Inventors

• Semidey-Flecha Lymarie
• Viens Gerard A
• Rachamadugu Arvind

Classifications

• A61F13/2028

  adapted to change of shape after absorption of liquid · CPC title

• A61F13/208 Primary

  having means for avoiding leakage, e.g. liquid impermeable withdrawal end (A61F13/204 takes precedence) · CPC title

• A61F13/206

  Tampons made of rolled-up material · CPC title

• A61F13/2062

  Tampons made from folded lengths of material, e.g. of string · CPC title

• A61F13/2082

  Apparatus or processes of manufacturing · CPC title