Absorbent hygienic article for absorbing body fluids

Patent metadata

Field	Value
Publication number	US-11801173-B2
Application number	US-201917783332-A
Country	US
Kind code	B2
Filing date	Dec 20, 2019
Priority date	Dec 20, 2019
Publication date	Oct 31, 2023
Grant date	Oct 31, 2023

Abstract

An absorbent hygienic article for absorbing body fluids, the article including a liquid absorbent top layer and a backing layer, the top layer and the backing layer being made from roll materials and being joined together. The top layer is constituted by a cellulosic fibrous web, the fibres in the cellulosic fibrous web being constituted by a mixture of cellulose fibres, the mixture including regenerated cellulose fibres or natural cellulose staple fibres and cellulose pulp fibres, the cellulosic fibrous web being a foam-formed, hydroentangled cellulosic fibrous web.

First claim

The invention claimed is:

1. An absorbent hygienic article for absorbing body fluids, the article comprising a liquid absorbent top layer and a backing layer, the top layer and the backing layer being made from roll materials and being joined together, wherein the top layer consists of a cellulosic fibrous web, the fibres in the cellulosic fibrous web consisting of a mixture of cellulose fibres, the mixture comprising cellulose pulp fibers, and at least one of regenerated cellulose fibres and natural cellulose staple fibres, the cellulosic fibrous web being a foam-formed, hydroentangled cellulosic fibrous web.

2. An absorbent hygienic article according to claim 1 , wherein the regenerated cellulose fibres and/or the natural cellulose staple fibres are staple fibres having a length within the range of from 2 to 20 millimeter and a linear density in the range of from 0.3 to 3 dtex.

3. An absorbent hygienic article according to claim 1 , wherein the mixture of cellulose fibres includes viscose fibres.

4. An absorbent hygienic article according to claim 1 , wherein the mixture of cellulose fibres is constituted by 2 to 50% by weight of regenerated cellulose fibres or natural cellulose staple fibres based on a total weight of the mixture of cellulose fibres.

5. An absorbent hygienic article according to claim 1 , wherein the top layer has a basis weight of from 30 gsm to 100 gsm.

6. An absorbent hygienic article according to claim 1 , wherein the cellulosic fibrous web has a bulk in the range of 7.5 to 11 cm 3 /g.

7. An absorbent hygienic article according to claim 1 , wherein the absorbent hygienic article has a rewet of less than 1 gram as measured according to the method disclosed herein.

8. An absorbent hygienic article according to claim 1 , wherein the cellulosic fibrous web has a liquid spreading capacity in a machine direction of the cellulosic fibrous web of 75 millimeters or more as measured after three insults of test liquid in accordance with the test method disclosed herein.

9. An absorbent hygienic article according to claim 1 , wherein the absorbent hygienic article has a liquid spreading capacity in a cross machine direction of the cellulosic fibrous web of 30 millimeters or more as measured after a first insult of test liquid and of 45 millimeters or more as measured after two insults of test liquid, the measurements being made in accordance with the test method disclosed herein.

10. An absorbent hygienic article according to claim 1 , wherein the backing layer is constituted by renewable raw materials.

11. An absorbent hygienic article according to claim 1 , wherein a sample of the cellulosic fibrous web having a length in the machine direction of 100 millimeters and a width in the cross machine direction of 50 millimeters and a basis weight of 50 gsm to 70 gsm has a wet area of 3500 mm 2 or more as measured according to the test method as disclosed herein.

12. An absorbent hygienic article according to claim 1 , wherein the top layer and the backing layer are the only constituent layers of the absorbent hygienic article.

13. An absorbent hygienic article according to claim 1 , wherein the absorbent hygienic article is a panty liner.

14. An absorbent hygienic article according to claim 1 , wherein the absorbent hygienic article is an underwear protector, an underarm protector, a bib, a seat cover, a place mat, under pants, or a bed protector.

15. An absorbent hygienic article according to claim 1 , wherein a user-facing surface of the absorbent hygienic article is provided with an embossed pattern, a dimpling pattern, a printed pattern or a combination of one or more of an embossed pattern, a dimpling pattern, and a printed pattern.

16. An absorbent hygienic article according to claim 1 , wherein a sample of the cellulosic fibrous web having a length in the machine direction of 100 millimeters and a width in the cross machine direction of 50 millimeters and a basis weight of 50 gsm to 70 gsm has a wet area of 4000 mm 2 or more as measured according to the test method as disclosed herein.

Assignees

• Essity Hygiene & Health Ab

Inventors

• Bagger-Sjöbäck Anna
• Hörle Magdalena
• Blomström Philip
• Fingal Lars
• Nihlstrand Anna

Classifications

• A61F13/51121 Primary

  characterised by the material · CPC title

• A61L15/28

  Polysaccharides or their derivatives {(A61L15/225 takes precedence)} · CPC title

• D04H1/26

  Wood pulp · CPC title

• D04H1/425

  Cellulose series · CPC title

• D04H1/4258

  Regenerated cellulose series · CPC title