IP Library › Granted Patent US 11,534,373
Granted Patent B2
US 11,534,373 · App. 14/493,469 · Granted Dec 27, 2022

Wet wipes comprising a fibrous structure and a liquid composition

Inventors: Thomas James Klofta (Cincinnati, OH); Steven Lee Barnholtz (West Chester, OH); Christopher Scott Cameron (Cincinnati, OH); Mario Castillo (Cincinnati, OH); Randall Glenn Marsh (Hamilton, OH); Pamela Marie Morison (Cincinnati, OH); Wendy Qin (Mason, OH); Jeffrey David Turner (Montgomery, OH)
Assignee: The Procter & Gamble Company
A61K8/0208A47L13/17A61Q19/00A61Q19/10B08B1/006B32B5/022B32B5/26B32B2262/0253B32B2262/062B32B2262/067B32B2262/14B32B2307/728B32B2432/00B32B2555/00
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 11,534,373
App. No.
14/493,469
Granted
Dec 27, 2022
Kind
B2
Abstract

A wet wipe that exhibits a novel combination of properties and methods for making such wet wipes are provided.

Claims (31)

1. A wet wipe comprising:

a fibrous structure, wherein the fibrous structure comprises filaments and solid additives; and

a liquid composition comprising a plurality of droplets suspended in water, each droplet comprising a liquid core surrounded by a solid film, each liquid core comprising a lipophilic emollient, and each solid film comprising a plurality of clay mineral particles each having a particle size of about 1 micron;

wherein the wet wipe exhibits a Tactile Sensory Coefficient of Friction of less than 0.60 as measured according to a Tactile Sensory Coefficient of Friction Test Method;

wherein the fibrous structure is layered;

wherein the fibrous structure has a basis weight of from about 40 g/m 2 to about 60 g/m 2 ;

wherein the fibrous structure has a density of less than 0.10 g/cm 3 ;

wherein the liquid composition is present at from about 200% to about 400% of the basis weight of the fibrous structure;

wherein the filaments and the solid additives are present in the fibrous structure at a first weight ratio of at least 1:7; and

wherein the wet wipe has a Cleaning Coefficient of Friction of greater than 0.50 as measured according to a Cleaning Coefficient of Friction Test Method.

2. The wet wipe according to claim 1 , wherein at least one of the solid additives comprises a fiber comprising a wood pulp fiber, wherein the wood pulp fiber is selected from: treated or untreated softwood fibers, Southern Softwood Kraft pulp fibers, Northern Softwood Kraft pulp fibers, treated or untreated hardwood fibers, Eucalyptus pulp fibers, Acacia pulp fibers, and combinations thereof; and wherein the filaments comprise at least one of a natural polymer or a thermoplastic polymer, wherein the natural polymer is selected from: starch, starch derivatives, cellulose, cellulose derivatives, hemicelluloses, hemicelluloses derivatives and mixtures thereof; and wherein the thermoplastic polymer is selected from a group consisting of: polypropylene, polyethylene, polyester, polylactic acid, polyhydroxyalkanoate, polyvinyl alcohol, polycaprolactone and mixtures thereof; and wherein at least one surface of the fibrous structure comprises a layer of filaments.

3. The wet wipe according to claim 1 , wherein the liquid composition comprises at least one from a group consisting of: a rheology modifier, an emulsifier, and a preservative.

4. The wet wipe according to claim 1 , wherein the fibrous structure has a Liquid Absorptive Capacity of greater than 12 g/g as measured according to a Liquid Absorptive Capacity Test Method.

5. The wet wipe according to claim 1 , wherein the wet wipe has a Wet to Dry Drape Ratio of less than about 0.80 measured according to a Wet to Dry Drape Ratio Test Method.

6. The wet wipe according to claim 1 , wherein the wet wipe exhibits a Compressive Modulus of greater than about 4.75 [log(gsi)] measured according to a Compressive Modulus Test Method.

7. A wet wipe comprising:

a fibrous structure, wherein the fibrous structure comprises filaments and solid additives; wherein at least one of the filaments comprises a thermoplastic polymer or a natural polymer; and wherein the solid additives comprise a fiber; and wherein at least one surface of the fibrous structure comprises a layer of filaments; and

a liquid composition comprising a plurality of droplets suspended in greater than 90% water, each droplet comprising a liquid core surrounded by a solid film, each liquid core comprising a lipophilic emollient, and each solid film comprising a plurality of clay mineral particles each having a particle size of about 1 micron;

wherein the wet wipe exhibits a Wet to Dry Drape Ratio of less than about 0.80 as measured according to a Wet to Dry Drape Ratio Test Method;

wherein the fibrous structure is layered;

wherein the fibrous structure has a basis weight of from about 40 g/m 2 to about 60 g/m 2 ;

wherein the fibrous structure has a density of less than 0.10 g/cm 3 ;

wherein the liquid composition is present at from about 200% to about 400% of the basis weight of the fibrous structure;

wherein the filaments and the solid additives are present in the fibrous structure at a first weight ratio of at least 1:7; and

wherein the wet wipe has a Cleaning Coefficient of Friction of greater than 0.50 as measured according to a Cleaning Coefficient of Friction Test Method.

8. The wet wipe according to claim 7 , wherein the liquid composition comprises at least one from a group consisting of: a rheology modifier, an emulsifier, and a preservative.

9. The wet wipe according to claim 7 , wherein the fibrous structure has a Liquid Absorptive Capacity of greater than 12 g/g as measured according to a Liquid Absorptive Capacity Test Method.

10. The wet wipe according to claim 7 , wherein the wet wipe has a Tactile Sensory Coefficient of Friction of less than 0.60 measured according to a Tactile Sensory Coefficient of Friction Test Method.

11. The wet wipe according to claim 7 , wherein the wet wipe exhibits a Compressive Modulus of greater than about 4.75 [log(gsi)] measured according to a Compressive Modulus Test Method.

12. The wet wipe according to claim 1 , wherein a second weight ratio of the emollient and the clay mineral is in a range of about 1:30 to about 30:1.

13. The wet wipe according to claim 7 , wherein a second weight ratio of the emollient and the clay mineral is in a range of about 1:30 to about 30:1.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 21, 2014
From: KLOFTA, THOMAS JAMES; BARNHOLTZ, STEVEN LEE; CAMERON, CHRISTOPHER SCOTT; CASTILLO, MARIO; MARSH, RANDALL GLENN; MORISON, PAMELA MARIE; QIN, WENDY; TURNER, JEFFREY DAVID
To: THE PROCTER & GAMBLE COMPANY
Reel/Frame 033988/0396 →
Continuity (2)
Provisional Application 61881576 · Sep 24, 2013
Related Publication 20150086659A1 · Mar 26, 2015