IP Library › Granted Patent US 11,207,441
Granted Patent B2
US 11,207,441 · App. 15/777,306 · Granted Dec 28, 2021

Fibrous structure exhibiting an antimicrobial effect

Inventors: Hannu Ahoniemi (Gothenburg, SE); Lars Fingal (Gothenburg, SE); Ulrika Husmark (Gothenburg, SE); Kent Malmgren (Sundsvall, SE); Anna Nihlstrand (Gothenburg, SE)
Assignee: ESSITY HYGIENE AND HEALTH AKTIEBOLAG
A61L15/18A61L15/425A61L15/46
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Quick Facts
Patent No.
US 11,207,441
App. No.
15/777,306
Granted
Dec 28, 2021
Kind
B2
Abstract

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

Claims (17)

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.

Assignments (2)
CHANGE OF NAME Recorded Feb 18, 2019
From: SCA HYGIENE PRODUCTS AKTIEBOLAG
To: ESSITY HYGIENE AND HEALTH AKTIEBOLAG
Reel/Frame 048359/0803 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 18, 2018
From: AHONIEMI, HANNU; FINGAL, LARS; HUSMARK, ULRIKA; MALMGREN, KENT; NIHLSTRAND, ANNA
To: ESSITY HYGIENE AND HEALTH AKTIEBOLAG
Reel/Frame 045845/0040 →
Continuity (1)
Related Publication 20200254135A1 · Aug 13, 2020
Cited By (1)
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