Granted Patent B2

US 9,955,686 · App. 15/052,320 · Granted May 1, 2018

Inventors: Herbert P. Hartgrove (Dunn, NC); Dianne B. Ellis (Cary, NC); Dawn Ellen Huston (Mooresville, NC); Teresa Ann Oldham (Erwin, NC)

Assignee: AVINTIV Specialty Materials Inc.

A01N25/22A01N25/08A01N25/10A01N25/34A01N33/12A47L13/17B32B5/022B32B5/06B32B5/08B32B5/26B32B7/04B32B29/02C11D17/04D04H1/425D04H1/492D04H1/498D04H3/16D06M15/61B32B2255/02B32B2255/26B32B2262/02B32B2262/0253B32B2262/0261B32B2262/0276B32B2262/06B32B2262/14B32B2307/718B32B2307/7145B32B2307/7166B32B2307/724B32B2307/726B32B2432/00B32B2555/00D06M13/46

Abstract

Claims (19)

1. A wipe for preventing quaternary ammonium depletion, comprising:

(a) a first spunbond layer and a second spunbond layer, wherein the first spunbond layer, the second spunbond layer, or both comprises one or more polyolefins;

(b) at least one pulp layer disposed between the first spunbond layer and the second spunbond layer, the at least one pulp layer comprising (i) pulp and (ii) acrylic meltblown fibers, acrylic staple fibers, or both, and wherein the at least one pulp layer, the first spunbond layer, and the second spunbond layer are hydroentangled together and define a hydroentangled nonwoven fabric having a first surface and a second surface; and

(c) a cationic additive disposed on at least one of the first surface or the second surface.

2. The wipe according to claim 1 , wherein the first spunbond layer, the second spunbond layer, or both comprise at least one of a polyolefin, a polyester, a polyamide, or any combination thereof.

3. The wipe according to claim 2 , wherein the first spunbond layer, the second spunbond layer, or both comprise a polypropylene.

4. The wipe according to claim 1 , wherein the first spunbond layer, the second spunbond layer, or both comprise individual filaments having a denier comprising from 0.5 to 3.

5. The wipe according to claim 1 , wherein the at least one pulp layer comprises organic pulp, synthetic pulp, or any combination thereof.

6. The wipe according to claim 1 , wherein the hydroentangled nonwoven fabric comprises from 30-70 wt % of a polyolefin and from 30-70 wt % of a cellulosic pulp.

7. The wipe according to claim 1 , wherein the hydroentangled nonwoven fabric has a basis weight comprising from 10 to 80 gsm.

8. The wipe according to claim 1 , wherein the cationic additive comprises a cationic polymer.

9. The wipe according to claim 8 , wherein the cationic polymer defines a cationic coating, said cationic coating comprising a basis weight from 0.5 to 5 gsm.

10. The wipe according to claim 8 , wherein the cationic polymer comprises a water-soluble polymer.

11. The wipe according to claim 8 , wherein the cationic polymer comprises a cationic polyamine including a backbone comprising a cationic amine group.

12. The wipe according to claim 1 , wherein the wipe maintains a substantially constant quaternary ammonium concentration in a disinfectant solution when the wipe is disposed therein.

13. The wipe according to claim 1 , wherein the at least one pulp layer comprises pulp and acrylic meltblown fibers, wherein the acrylic meltblown fibers are discontinuous.

14. The wipe according to claim 1 , wherein the at least one pulp layer comprises pulp and acrylic staple fibers.

15. The wipe according to claim 1 , wherein the at least one pulp layer comprises (i) pulp, (ii) acrylic meltblown fibers, and (iii) acrylic staple fibers.

16. The wipe according to claim 1 , wherein the first spunbond layer and the second spunbond layer each comprises one or more polyolefins such that the hydroentangled nonwoven fabric comprises (i) from 35-55 wt % of the one or more polyolefins; (ii) from about 35-55 wt % pulp; and (iii) the balance of the hydroentangled nonwoven fabric comprising (a) the cationic additive and (b) the acrylic meltblown fibers, acrylic staple fibers, or both.

Assignments (40)

Continuity (2)