Granted Patent B2

US 10,940,508 · App. 15/052,357 · Granted Mar 9, 2021

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.

B08B1/006A01N25/10A01N25/34A47L13/17B32B5/022B32B5/06B32B5/26B32B7/08D04H1/425D04H1/492D04H1/498D04H1/56D04H3/14D06M15/647B32B2250/02B32B2250/20B32B2255/02B32B2255/26B32B2260/023B32B2262/0253B32B2432/00D10B2321/022D10B2509/00Y10T442/689

Abstract

Claims (22)

1. A wipe for preventing chlorine depletion, comprising:

(a) a first nonwoven layer comprising a first group of continuous polyolefin filaments;

(b) a second nonwoven layer comprising a second group of continuous filaments;

(c) a third nonwoven layer comprising acrylic polymeric staple fibers;

(d) at least one pulp layer disposed directly between the third nonwoven layer and the second nonwoven layer and the third nonwoven layer is disposed directly between the first nonwoven layer and the at least one pulp layer, wherein the first nonwoven layer, the second nonwoven layer, the third nonwoven layer, and the at least one pulp layer are hydroentangled together and define a hydroentangled nonwoven fabric having a first surface and a second surface; and

(e) a nonionic modified siloxane additive is disposed on at least one of the first surface or the second surface;

wherein the hydroentangled nonwoven fabric is devoid of meltblown fibers and the hydroentangled nonwoven fabric comprises a three-dimensional pattern imaged onto the first surface.

2. The wipe according to claim 1 , wherein the first nonwoven layer comprises a first spunbond layer and the second nonwoven layer comprises a second spunbond layer.

3. The wipe according to claim 1 , wherein the second nonwoven layer comprises synthetic polymer filaments.

4. The wipe according to claim 3 , wherein the synthetic polymer filaments comprise at least one of a polyolefin, a polyester, a polyamide, or any combination thereof.

5. The wipe according to according to claim 3 , wherein the synthetic polymer filaments comprise a polypropylene.

6. The wipe according to according to claim 3 , wherein the synthetic polymer filaments have a denier comprising from 0.5 to 3.

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

8. 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.

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

10. The wipe according to claim 1 , wherein the nonionic modified siloxane comprises a nonionic polyoxyalkyl-modified polydimethyl siloxane additive and has a basis weight comprising from 0.1 to 3 gsm.

11. The wipe according to claim 1 , wherein the nonionic modified siloxane additive is hydrophilic.

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

13. The wipe according to claim 12 , wherein the substantially constant chlorine concentration in the disinfectant solution is defined as a less than a 10% reduction over a four hour time period.

14. The wipe according to claim 1 , wherein the hydroentangled nonwoven fabric comprises a three-dimensional pattern imaged onto the first surface and the second surface.

15. The wipe of according to claim 7 , wherein the hydroentangled nonwoven fabric comprises from 55-70 wt % of pulp.

16. The wipe according to claim 1 , wherein the third nonwoven layer has a basis weight from 0.5 to 15 gsm and the at least one pulp layer has a basis weight from 10 to 30 gsm.

Assignments (40)

Continuity (2)