Fibrous structure exhibiting an antimicrobial effect

Patent metadata

Field	Value
Publication number	US-11207441-B2
Application number	US-201515777306-A
Country	US
Kind code	B2
Filing date	Nov 20, 2015
Priority date	Nov 20, 2015
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

A fibrous structure exhibits an absorbency time of equal to or less than 1.5 s and exhibits an antimicrobial effect.

First claim

The invention claimed is:

1. An absorbent nonwoven material having a fibrous structure comprising:
a mixture of continuous spunlaid filaments and short fibers comprising natural fibers and/or staple fibers;
the absorbent nonwoven material having an absorbency time of equal to or less than 1.5 s and exhibiting an antimicrobial effect;
the absorbent nonwoven material being hydroentangled and having a total basis weight of 40-120 g/m 2 , and wherein the absorbent nonwoven material comprises an antimicrobial agent in an amount of at least 5 wt % of the fibrous structure.

2. The absorbent nonwoven material according to claim 1 , further exhibiting an absorbency of at least 5 g/g.

3. The absorbent nonwoven material according to claim 1 , wherein the antimicrobial agent comprises zinc, silver or titanium oxide.

4. The absorbent nonwoven material according to claim 1 , wherein the antimicrobial agent comprises zinc oxide.

5. The absorbent nonwoven material according to claim 1 , wherein the antimicrobial agent comprises zinc oxide fibers.

6. The absorbent nonwoven material according to claim 4 , wherein the zinc oxide is present as a powder.

7. The absorbent nonwoven material according to claim 4 , wherein the zinc oxide is present as part of the fibers.

8. The absorbent nonwoven material according to claim 4 , comprising short fibers, the short fibers comprising natural or synthetic fibers.

9. The absorbent nonwoven material according to claim 1 , the fibrous structure comprising continuous filaments.

10. The absorbent nonwoven material according to claim 1 , wherein the fibrous structure is hydroentangled.

11. The absorbent nonwoven material according to claim 1 , wherein the fibrous structure has an antimicrobial effect corresponding to a logarithmic reduction of at least 2 units as determined by AATCC 100 for S. aureus (ATCC 6538).

12. The absorbent nonwoven material according to claim 1 , wherein the absorbency time is calculated in accordance with the ISO 12625-8 test.

13. The absorbent nonwoven material according to claim 2 , wherein the absorbency is calculated in accordance with the ISO 12625-8 test.

14. The absorbent nonwoven material according to claim 12 , wherein the absorbency is calculated in accordance with the ISO 12625-8 test.

Assignees

• Essity Hygiene & Health Ab

Inventors

• Ahoniemi Hannu
• Fingal Lars
• Husmark Ulrika
• Malmgren Kent
• Nihlstrand Anna

Classifications

• C11D17/049

  Cleaning or scouring pads; Wipes · CPC title

• A61L15/46 Primary

  Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria · CPC title

• D04H1/413

  containing granules other than absorbent substances · CPC title

• A61L15/425

  Porous materials, e.g. foams or sponges · CPC title

• A61F13/8405

  Additives, e.g. for odour, disinfectant or pH control · CPC title