Tampons and methods for making tampons

Patent metadata

Field	Value
Publication number	US-12274603-B2
Application number	US-202418599355-A
Country	US
Kind code	B2
Filing date	Mar 8, 2024
Priority date	Dec 17, 2018
Publication date	Apr 15, 2025
Grant date	Apr 15, 2025

Abstract

Aspects of the present disclosure relate to methods for making tampons including primary absorbent members and secondary absorbent members. In some configurations, the tampons may be constructed with a primary absorbent member formed by a primary absorbent pad in a rolled configuration. In some configurations, the tampons may be constructed with a primary absorbent member formed by first and second primary absorbent pads positioned in a crossing configuration.

First claim

What is claimed is:

1. A method for making a tampon, the method comprising steps of:
providing a first primary absorbent pad comprising a first end region and a second end region separated from the first end region by a central region;
providing a second primary absorbent pad comprising a first end region and a second end region separated from the first end region by a central region;
overlaying the central region of the first primary absorbent pad on the central region of the second primary absorbent pad in a crossing configuration, wherein the first and second end regions of the first and second primary absorbent pads do not overlap each other;
positioning a flexible member on the central region of the first primary absorbent pad;
forcing a first portion of the flexible member through the central region of the first primary absorbent pad and the central region of the second primary absorbent pad, wherein the first portion of the flexible member extends outward from the second primary absorbent pad and a second portion of the flexible member extends outward from the first primary absorbent pad;
compressing the first primary absorbent pad and the second primary absorbent pad into a generally cylindrically shaped primary absorbent member that envelops the second portion of the flexible member; and
connecting a withdrawal cord with at least one of the first primary absorbent pad and the second primary absorbent pad.

2. The method of claim 1 , wherein the flexible member comprises a secondary absorbent member.

3. The method of claim 1 , wherein connecting the withdrawal cord further comprises inserting the withdrawal cord through the first primary absorbent pad, the second primary absorbent pad, and the flexible member.

4. The method of claim 1 , comprising forming apertures in the central regions of the first primary absorbent pad and the second primary absorbent pad.

5. The method of claim 4 , wherein forcing the first portion of the flexible member further comprises inserting the first portion of the flexible member through the apertures.

6. The method of claim 4 , wherein forming apertures further comprises punch pressing the first portion of the flexible member through the first and second primary absorbent pads.

7. The method of claim 1 , wherein the flexible member comprises a first end region and a second end region separated from the first end region by a central region, and wherein the central region comprises the first portion of the flexible member.

8. The method of claim 1 , wherein the flexible member comprises an outer circumferential region surrounding an inner radial region, wherein the inner radial region comprises the first portion of the flexible member and wherein the outer circumferential region comprises the second portion.

9. A method for making a tampon, the method comprising steps of:
providing a first primary absorbent pad comprising a first end region and a second end region separated from the first end region by a central region;
providing a second primary absorbent pad comprising a first end region and a second end region separated from the first end region by a central region;
overlaying the central region of the first primary absorbent pad on the central region of the second primary absorbent pad in a crossing configuration, wherein the first and second end regions of the first and second primary absorbent pads do not overlap each other;
positioning a flexible member on the central region of the first primary absorbent pad, wherein the flexible member comprises a secondary absorbent member;
forcing a first portion of the flexible member through the central region of the first primary absorbent pad and the central region of the second primary absorbent pad, wherein the first portion of the flexible member extends outward from the second primary absorbent pad and a second portion of the secondary absorbent member extends outward from the first primary absorbent pad; and
compressing the first primary absorbent pad and the second primary absorbent pad into a generally cylindrically shaped primary absorbent member that envelops at least a portion of the second portion of the flexible member.

10. The method of claim 9 , comprising connecting a withdrawal cord with the primary absorbent member.

11. The method of claim 9 , comprising forming apertures in the central regions of the first primary absorbent pad and the second primary absorbent pad.

12. The method of claim 11 , wherein forcing the first portion of the secondary absorbent member further comprises inserting the first portion of the flexible member through the apertures.

13. The method of claim 11 , wherein forming apertures further comprises punch pressing the first portion of the secondary absorbent member through the first and second primary absorbent pads.

14. A method for making a tampon, the method comprising steps of:
providing a first primary absorbent pad comprising a first end region and a second end region separated from the first end region by a central region;
providing a second primary absorbent pad comprising a first end region and a second end region separated from the first end region by a central region;
overlaying the central region of the first primary absorbent pad on the central region of the second primary absorbent pad in an overlapping configuration, wherein at least a portion of the first and second end regions of the first and second primary absorbent pads do not overlap each other;
positioning a flexible member on the central region of the first primary absorbent pad;
forcing a first portion of the flexible member through the central region of the first primary absorbent pad and the central region of the second primary absorbent pad, wherein the first portion of the flexible member extends outward from the second primary absorbent pad and a second portion of the flexible member extends outward from the first primary absorbent pad;
compressing the first primary absorbent pad and the second primary absorbent pad into a generally cylindrically shaped primary absorbent member that envelops the second portion of the flexible member; and
wherein the flexible member comprises a secondary absorbent member.

15. The method of claim 14 , comprising connecting a withdrawal cord with at least one of the first primary absorbent pad and the second primary absorbent pad.

16. The method of claim 15 , wherein at least a portion of the withdrawal cord is less hydrophilic than the second primary absorbent pad.

17. The method of claim 15 , wherein the withdrawal cord comprises a proximal portion, a distal portion, and a central portion between the proximal portion and the distal portion, and wherein at least one of the proximal portion and the central portion of the withdrawal cord is absorbent and the distal portion is non-absorbent.

18. The method of claim 14 , comprising forming apertures in the central regions of at least one of the first primary absorbent pad and the second primary absorbent pad.

Assignees

• Procter & Gamble

Inventors

• Strong Kevin Charles

Classifications

• A61F13/2094

  rolling a web material to form a tampon · CPC title

• A61F13/206

  Tampons made of rolled-up material · CPC title

• A61F13/15203

  Properties of the article, e.g. stiffness or absorbency (chemical aspects A61L15/00) · CPC title

• A61F13/2054

  made by compressing a not-rolled web or pledged · CPC title

• A61F13/15707

  Mechanical treatment, e.g. notching, twisting, compressing, shaping · CPC title