Tampon with consolidated fibrous assembly and method of making

Patent metadata

Field	Value
Publication number	US-10905598-B2
Application number	US-201615280709-A
Country	US
Kind code	B2
Filing date	Sep 29, 2016
Priority date	Jun 10, 2016
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

The present disclosure describes a tampon article, a composite fibrous web, and a method of making same. Such an article includes an outer carrier component including an inner surface that defines an internal void. Including an absorbent component elongate along an axis and is disposed in the internal void. The absorbent component includes an outer surface that extends about the axis and faces the inner surface. The absorbent component further includes a composite fibrous web of staple cellulosic fibers and a meltspun web of filaments entangled with the web of staple cellulosic fibers. The composite fibrous web can be in a compressed configuration in the internal void such that at least portion of the outer surface of the absorbent component is defined by the meltspun web of filaments. The tampon can include a withdrawal cord coupled to the absorbent component.

First claim

We claim:

1. A tampon article, comprising:
an outer carrier component including an inner surface that defines an internal void;
an absorbent component that is elongate along an axis and is disposed in the internal void, the absorbent component including an outer surface that extends about the axis and faces the inner surface, the absorbent component further including a compressed composite fibrous web that includes a) a web of staple cellulosic fibers, and b) a meltspun web of filaments having a first side, a second side opposed to the first side along a thickness, a length perpendicular to the thickness, and a width perpendicular to the length and the thickness, where the width is greater than the thickness and smaller than the length, wherein the meltspun web of filaments is entangled with the web of staple cellulosic fibers so that the web of staple cellulosic fibers is 1) coplanar with respect to the meltspun web of filaments and 2) extends along an entirety of the length and the entirety of the width of the meltspun web of filaments, wherein the compressed composite fibrous web is compressed in the internal void such that at least a portion of the outer surface of the absorbent component is defined by the meltspun web of filaments.

2. The tampon article of claim 1 , wherein the web of staple cellulosic fibers is one of a) web of viscose fibers, b) a web of cotton fibers, orb) a web of a blended viscose fibers and cotton fibers.

3. The tampon article of claim 1 , wherein the meltspun web comprises about 2.50% to about 15.0% by weight of the absorbent component.

4. The tampon article of claim 1 , wherein the meltspun web is at least one of: A) at least one spunbond nonwoven, or B) at least one meltblown nonwoven.

5. The tampon article of claim 1 , wherein the filaments of the meltspun web are polypropylene filaments, polyethylene terephthalate filaments, polyamide filaments, polyethylene filaments, or poly lactic acid filaments.

6. The tampon article of claim 1 , wherein the composite fibrous web is a hydro-entangled web of the meltspun web of filaments entangled with the web of staple cellulosic fibers and the meltspun web comprises about 2.50% to about 15.0% by weight of the composite fibrous web.

7. The tampon article of claim 1 , wherein the composite fibrous web is folded into the compressed configuration.

8. The tampon article of claim 1 , wherein the composite fibrous web is spiral wound into the compressed configuration.

9. The tampon article of claim 1 , wherein the composite fibrous web is substantially cylindrical.

10. The tampon article of claim 1 , wherein the absorbent component includes an entanglement zone, wherein the entanglement zone is where a plurality of filaments of the meltspun web of filaments are entangled with a plurality of staple fibers of the web of cellulosic staple fibers.

11. The tampon article of claim 10 , wherein the plurality of filaments are entangled and knotted with the plurality of the cellulosic fibers.

12. The tampon article of claim 10 , wherein the entanglement zone is devoid of an adhesive, stitching, or combination thereof.

13. The tampon article of claim 1 , further comprising a withdrawal cord coupled to the absorbent component and extending relative to the absorbent component in a direction away from the absorbent component.

14. The tampon article of claim 1 , wherein the composite fibrous web is monolithic.

15. A composite fibrous web configured to be compressed so as to transition into an absorbent component of a tampon article, the composite fibrous web comprising:
a meltspun web of filaments having a first side, a second side opposed to the first side along a thickness, a length perpendicular to the thickness, and a width perpendicular to the length and the thickness, where the width is greater than the thickness and smaller than the length;
a web of staple cellulosic fibers adjacent to one of the first and second sides of the meltspun web of filaments, such that, the web of staple cellulosic fibers is 1) coplanar with respect to the meltspun web of filaments and 2) extends along an entirety of the length and the entirety of the width of the meltspun web of filaments; and
an entanglement zone where the web of staple cellulosic fibers are entangled with the filaments of the meltspun web of filaments so as to define the composite fibrous web, wherein the composite fibrous web is configured to transition from a first uncompressed configuration into a second compressed configuration.

16. The composite fibrous web of claim 15 , further comprising a hydro-entangled composite fibrous web that includes the meltspun web of filaments and the web of staple cellulosic fibers.

17. The composite fibrous web of claim 15 , wherein the meltspun web of filaments comprises about 2.50% to about 15.0% by weight of the composite fibrous web.

18. The composite fibrous web of claim 15 , wherein the composite fibrous web has a basis weight in the range of about 100 grams per square meter to about 300 grams per square meter.

19. The composite fibrous web of claim 15 , wherein the web of staple cellulosic fibers are viscose fibers, cotton fibers, or a blend of viscose and cotton fibers.

20. The composite fibrous web of claim 19 , wherein the meltspun web of filaments includes at least one of: A) at least one spunbond nonwoven, and B) at least one meltblown nonwoven.

21. The composite fibrous web of claim 20 , wherein the meltspun web of filaments is a thermally bonded meltspun web.

22. The composite fibrous web of claim 21 , wherein the thermally bonded meltspun web is a point bonded web.

23. The composite fibrous web of claim 15 , wherein the filaments of the meltspun web are polypropylene filaments, polyethylene terephthalate filaments, polyamide filaments, polyethylene filaments, or polylactic acid filaments.

24. The composite fibrous web of claim 15 , wherein the filaments of the meltspun web include homogenous filaments, bicomponent filaments, and multi-component filaments.

25. The composite fibrous web of claim 15 , further comprising a hydro-entangled web that includes the meltspun web of filaments and the web of staple cellulosic fibers, wherein the meltspun web of filaments is a thermally bonded web, and wherein A) the hydro-entangled web has a basis weight in the range of about 100 grams per square meter to about 300 grams per square meter, and B) the meltspun web of filaments comprises about 2.50% to about 15.0% by weight of the hydro-entangled web.

26. The composite fibrous web of claim 15 , wherein the composite fibrous web is monolithic.

Assignees

• Welspun India Ltd
• Weslpun India Ltd

Inventors

• Goenka Dipali
• Sahu Pranay

Classifications

• A61F13/206 Primary

  Tampons made of rolled-up material · CPC title

• A61F13/2085

  Catamenial tampons · CPC title

• A61F13/2068

  Tampons made from several layers (A61F13/2065, A61F13/206 take precedence) · CPC title

• A61F2013/53035

  of cotton · CPC title

• A61F13/2082 Primary

  Apparatus or processes of manufacturing · CPC title