Dissolvable fibrous web structure article comprising active agents

Patent metadata

Field	Value
Publication number	US-9545364-B2
Application number	US-201615170125-A
Country	US
Kind code	B2
Filing date	Jun 1, 2016
Priority date	Jul 2, 2010
Publication date	Jan 17, 2017
Grant date	Jan 17, 2017

Abstract

The personal care compositions of the present invention are in the form of an Article comprising a dissolvable fibrous web structure. The fibers of the dissolvable fibrous web structure comprise a surfactant; a water soluble polymeric structurant; and a plasticizer. Additionally the ratio of the water soluble water soluble polymeric structurant to the active agent in the fiber is 3.5 or less.

First claim

What is claimed is:

1. A method of making an article from a dissolvable fibrous web structure comprising the steps of:
a. preparing a processing mixture comprising one or more active agents, wherein one or more of the active agents are surfactants comprising a sodium laureth sulfate, and one or more water soluble polymeric structurants, wherein the processing mixture has:
i. from about 20% to about 60% solids; and
ii. a viscosity of from about 5,000 centipoise to about 150,000 centipoise;

b. fibrillating the processing mixture into fibers by a fluid film fibrillation process comprising a first pressurized gas stream directed against a liquid film of the processing mixture to form the fibers;
c. at least partially drying the fibers of the processing mixture by a second pressurized gas stream;
d. depositing the partially dry fibers on a surface to form a web of partially dry fibrous web structures;
e. drying the partially dry fibrous web structure to a desired final moisture content;
f. applying a surface resident coating; and
g. cutting the fibrous web into one or more shapes to form the article.

2. The method of claim 1 , wherein the first and the second pressurized gas streams are heated.

3. The method of claim 2 , wherein the second pressurized gas stream is a continuation of the first pressurized gas stream.

4. The method of claim 3 , wherein the desired final moisture content is from about 1% to about 15% moisture.

5. The method of claim 1 , wherein a significant number of fibers have an average diameter less than about 100 micrometer.

6. The method of claim 5 , wherein a significant number of fibers have an average diameter less than about 10 micrometer.

7. The method of claim 1 , wherein the viscosity of the processing mixture is from about 10,000 centipoise to about 125,000 centipoise.

8. The method of claim 7 , wherein the viscosity of the processing mixture is from about 15,000 centipoise to about 100,000 centipoise.

9. The method of claim 8 , wherein the viscosity of the processing mixture is from about 20,000 centipoise to about 75,000 centipoise.

10. The method of claim 9 , wherein the viscosity of the processing mixture is from about 25,000 centipoise to about 60,000 centipoise.

11. The method of claim 1 , wherein the % solids of the processing mixture is from about from about 20% to about 55% solids.

12. The method of claim 11 , wherein the % solids of the processing mixture is from about from about 25% to about 50% solids.

Assignees

• Procter & Gamble

Inventors

• Glenn Jr Robert Wayne
• Chhabra Rajeev
• Allen Jr William Maxwell
• Brennan Jonathan Paul

Classifications

• A61P43/00

  Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00 · CPC title

• D01D4/025

  Melt-blowing or solution-blowing dies · CPC title

• A61K8/027 Primary

  Fibers; Fibrils · CPC title

• B29K2105/0005

  containing compounding ingredients (releasing, lubricating or separating agents B29C33/56, fibers B29K2105/08, B29K2105/12; fillers B29K2105/16, recycled material B29K2105/26) · CPC title

• D01F6/50

  of polyalcohols, polyacetals or polyketals · CPC title