Making An Oral Care Article Of Manufacture

Patent metadata

Field	Value
Publication number	US-2022265529-A1
Application number	US-202117529319-A
Country	US
Kind code	A1
Filing date	Nov 18, 2021
Priority date	Jun 13, 2019
Publication date	Aug 25, 2022
Grant date	—

Abstract

A process, for example a continuous process, for making an oral care article of manufacture containing a fibrous composition, for example a composite structure, and more particularly to a process for making an oral care article of manufacture containing a fibrous composition, such as a soluble fibrous composition, containing soluble filaments is provided.

First claim

What is claimed is:

1 . A process for making an oral care article, the process comprising the steps of:
a. providing one or more soluble filament-forming materials; b. forming an aqueous composition comprising the one or more soluble filament-forming materials; c. processing the aqueous composition to produce a filament-forming composition; d. delivering the filament-forming composition to one or more dies; e. spinning the filament-forming composition to form a plurality of soluble filaments; f. collecting the soluble filaments on a collection device to form a fibrous composition; g. applying pressure to the fibrous composition to form a depression in the fibrous composition; and h. adding a nonfibrous composition to the depression in the fibrous structure, wherein the nonfibrous composition is greater in weight percentage, by weight of the oral care article, than the fibrous composition.

2 . The process of claim 1 , wherein the process further comprises one or more converting operations selected from the group consisting of: slitting, stacking, calendering, treating with optional ingredients, die cutting, printing, packaging, and combinations thereof.

3 . The process according to claim 1 , wherein the one or more soluble filament-forming materials comprises pullulan, hydroxypropylmethyl cellulose, hydroxyethyl cellulose, methyl cellulose, hydroxypropyl cellulose, polyvinyl pyrrolidone, carboxymethyl cellulose, sodium alginate, xanthan gum, tragacanth gum, guar gum, acacia gum, Arabic gum, polyacrylic acid, methylmethacrylate copolymer, carboxyvinyl polymer, dextrin, pectin, chitin, levan, elsinan, collagen, gelatin, zein, gluten, soy protein, casein, polyvinyl alcohol, carboxylated polyvinyl alcohol, sulfonated polyvinyl alcohol, starch, starch derivatives, hemicellulose, hemicellulose derivatives, proteins, chitosan, chitosan derivatives, polyethylene glycol, tetramethylene ether glycol, hydroxymethyl cellulose, polyethylene oxide, or combinations thereof.

4 . The process according to claim 3 , wherein the polymer comprises polyvinyl alcohol, starch, or combinations.

5 . The process according to claim 1 , wherein up to about 60% by weight of water is added to the one or more filament-forming materials in step b.

6 . The process according to claim 1 , wherein the step of processing the aqueous composition occurs within an extruder.

7 . The process according to claim 6 , wherein the extruder exhibits a maximum screw speed of less than 1600 rpm.

8 . The process according to claim 6 , wherein the extruder exhibits a dry throughput of at least 2 kg/hr.

9 . The process according to claim 6 , wherein the extruder exhibits a wet throughput of at least about 5 kg/hr.

10 . The process according to claim 6 , wherein the filament-forming composition exits the extruder at an exit pressure of from about 10 to about 80 bar.

11 . The process according to claim 1 wherein at least one of the soluble filaments comprises oral care active agent.

12 . The process according to claim 11 , wherein the oral care active agent comprises surfactant.

13 . The process of claim 12 , wherein the surfactant comprises anionic surfactant, cationic surfactant, nonionic surfactant, zwitterionic surfactant, amphoteric surfactant, or combinations thereof.

14 . The process of claim 1 , wherein the oral care active agent is added in the process in at least one of steps b, c, d, and h.

15 . The process of claim 14 , wherein the oral care active agent comprises fluoride ion source, metal ion source, abrasive, calcium ion source, polyphosphate, polymer, or combinations thereof.

16 . The process of claim 1 , wherein the nonfibrous composition comprises oral care active.

17 . The process of claim 16 , wherein the oral care active agents comprises fluoride ion source, metal ion source, abrasive, calcium ion source, polyphosphate, polymer, flavor, whitening agent, coolant, or combinations thereof.

18 . The process of claim 1 , wherein the depression is formed by a raised member on the collection device, by a raised member on a die cutter, or combinations thereof.

Assignees

• Procter & Gamble

Inventors

• Hartsig Dana Elizabeth
• Lyman Christopher Robert
• Payne Melissa Cherie
• Reed Anthony Edward
• Swartz Jeanette Marie

Classifications

• D01D5/08

  Melt spinning methods {(D01D5/0023 takes precedence)} · CPC title

• D01F1/10

  Other agents for modifying properties · CPC title

• D01F6/16

  from polymers of unsaturated carboxylic acids or unsaturated organic esters, e.g. polyacrylic esters, polyvinyl acetate · CPC title

• A61Q11/00

  Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses · CPC title

• A61K8/21 Primary

  Fluorides; Derivatives thereof · CPC title