US2018163325A1PendingUtilityA1

Dissolvable fibrous web structure article comprising active agents

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Assignee: GLENN JR ROBERT WAYNEPriority: Dec 9, 2016Filed: Dec 9, 2016Published: Jun 14, 2018
Est. expiryDec 9, 2036(~10.4 yrs left)· nominal 20-yr term from priority
D01D 5/04D01D 1/02A61Q 5/02D01F 6/50A61K 8/8129A61K 8/0208A61K 8/345A61K 8/731A61K 8/4946A61K 8/463A61K 8/362A61K 2800/80A61Q 19/00A61Q 19/10A61K 8/0204D01D 5/423A61K 8/86D01D 5/253B05D 7/02B05D 3/002
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Claims

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.

Claims

exact text as granted — not AI-modified
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.

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