Powdered pouch and method of making same

Patent metadata

Field	Value
Publication number	US-11753222-B2
Application number	US-202016915883-A
Country	US
Kind code	B2
Filing date	Jun 29, 2020
Priority date	Apr 16, 2012
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

Disclosed herein are water-soluble films and resulting packets including a water-soluble film coated by a powder, wherein the powder includes a mixture of a powdered lubricant and an active agent. Optionally, the active agent may be encapsulated, e.g. microencapsulated, for release of the active agent through mechanisms including, but not limited to, mechanical rupture, melt, ablation, dissolution, diffusion, biodegradation, or pH-controlled release. Active ingredients described include enzymes, oils, flavors, colorants, odor absorbers, fragrances, pesticides, fertilizers, activators, acid catalysts, metal catalysts, ion scavengers, bleaches, bleach components, fabric softeners and combinations thereof. Examples of packet fills include laundry detergents, bleach and laundry additives, fabric care, dishwashing, hard surface cleaning, beauty care, skin care, other personal care, and foodstuffs.

First claim

What is claimed:

1. A water-soluble packet, comprising:
a water-soluble film in the form of a packet; and
a powder coating on the film in the form of a packet, the coating consisting of a powder comprising
a powdered lubricant and
an active agent,
wherein the active agent is microencapsulated by a microcapsule and the powdered lubricant is not the same as the microcapsule and the active agent is selected from the group consisting of enzymes, flavors, colorants, pesticides, fertilizers, activators, acid catalysts, metal catalysts, ion scavengers, bleaches, bleach components, fabric softeners, and combinations thereof.

2. The water-soluble packet of claim 1 , wherein the active agent is microencapsulated in a wax, stearic acid, stearyl alcohol, glyceryl stearates, or polymeric microcapsule.

3. The water-soluble packet according to claim 1 , wherein the powdered lubricant is selected from the group consisting of starches, modified starches, silicas, siloxanes, calcium carbonate, magnesium carbonate, clay, talc, silicic acid, gypsum, zeolites, cylclodextrins, calcium stearate, zinc stearate, alumina, magnesium stearate, alumina, zinc oxide and combinations thereof.

4. The water-soluble packet according to claim 3 , wherein the powdered lubricant is kaolin.

5. The water-soluble packet according to claim 1 , wherein the active agent is not a zeolite.

6. The water-soluble packet of claim 2 , wherein the microcapsule is characterized by one or more of the following release mechanisms: mechanical rupture, dissolution, diffusion, ablation, biodegradation, melt, or a pH triggered release mechanism.

7. The water-soluble packet of claim 1 , wherein the powdered lubricant is characterized by a mean particle size in a range of about 1 μm to about 100 μm.

8. The water-soluble packet according to claim 2 , wherein said microcapsule is selected from one or more of: melamine formaldehyde, polyurethane, urea formaldehyde, chitosan, poly methyl methacrylate, polystyrene, polysulfone, poly tetrahydrofuran, gelatin, gum arabic, starch, polyvinylpyrrolidone, carboxymethylcellulose, hydroxyethylcellulose, methylcellulose, arabinogalactan, polyvinyl alcohol, polyacrylic acid, ethylcellulose, polyethylene, polymethacrylate, polyamide, poly (ethylenevinyl acetate), cellulose nitrate, silicones, poly(lactideco-glycolide), paraffin, carnauba, spermaceti, beeswax, stearic acid, stearyl alcohol, glyceryl stearates, shellac, cellulose acetate phthalate, and zein.

9. The water-soluble packet according to claim 2 , wherein the microcapsule is characterized by a mean particle size in a range of about 0.1 μm to about 200 μm.

10. The water-soluble packet according to claim 2 , wherein the mean particle size of the microcapsule is greater than the mean particle size of the powdered lubricant, wherein the microcapsule is selected from one or more of the group consisting of melamine formaldehyde, polyurethane, urea formaldehyde, chitosan, polymethyl methacrylate, polystyrene, polysulfone, poly tetrahydrofuran, gelatin, gum arabic, starch, polyvinyl pyrrolidone, carboxymethylcellulose, hydroxyethylcellulose, methylcellulose, arabinogalactan, polyvinyl alcohol, polyacrylic acid, ethylcellulose, polyethylene, polymethacrylate, polyamide, poly (ethylenevinyl acetate), cellulose nitrate, silicones, poly(lactideco-glycolide), paraffin, carnauba, spermaceti, beeswax, stearic acid, stearyl alcohol, glyceryl stearates, shellac, cellulose acetate phthalate, and zein.

11. The water-soluble packet according to claim 2 , wherein microcapsuled active agent comprises microcapsule agglomerate and the mean microcapsule agglomerate size is greater than the mean particle size of the powdered lubricant, wherein the microcapsule is selected from one or more of the group consisting of melamine formaldehyde, polyurethane, urea formaldehyde, chitosan, polymethyl methacrylate, polystyrene, polysulfone, polytetrahydrofuran, gelatin, gum arabic, starch, polyvinyl pyrrolidone, carboxymethylcellulose, hydroxyethylcellulose, methylcellulose, arabinogalactan, polyvinyl alcohol, polyacrylic acid, ethylcellulose, polyethylene, polymethacrylate, polyamide, poly(ethylenevinyl acetate), cellulose nitrate, silicones, poly(lactidoco-glycolide), paraffin, carnauba, spermaceti, beeswax, stearic acid, stearyl alcohol, glyceryl stearates, shellac, cellulose acetate phthalate, and zein.

12. The water-soluble packet according to claim 1 , wherein the powder coating comprises about 1 wt % to about 99 wt % active agent.

13. The water-soluble packet according to claim 1 , wherein the powder coating comprises about 1 wt % to about 99 wt % powdered lubricant.

14. The water-soluble packet according to claim 1 , wherein the powder coating is present on the film in the form of a packet in an amount in a range of about 0.01 mg/cm2 to about 10 mg/cm2.

15. The water-soluble packet according to claim 1 , wherein the water-soluble film comprises a material selected from the group consisting polyvinyl alcohol, modified polyvinyl alcohols, polyacrylates, water-soluble acrylate copolymers, methylcellulose, carboxymethylcellulose, dextrin, ethylcellulose, hydroxyethylcelleulose, hydroxypropyl methylcellulose, malodextrin, polymethacrylates, polyvinyl alcohol copolymers, hydroxypropyl methyl cellulose, polyvinyl pyrrolidone, polyalkylene oxides, acrylamide, acrylic acid, and combinations thereof.

16. The water-soluble packet according to claim 1 , further comprising a solid, liquid, or gel composition enclosed within the water-soluble packet.

17. The water-soluble packet according to claim 16 , wherein the enclosed composition comprises a laundry detergent, a bleach, a fabric care composition, a dishwashing composition, a hard surface cleaning composition, a beauty care composition, a skin care composition, a personal care composition, or a food product composition, or any combination thereof.

18. The water-soluble packet according to claim 16 , wherein the active agent is capable of a chemical reaction with a component of the composition enclosed within the water-soluble packet.

19. The water-soluble packet according to claim 18 , wherein the active agent is capable of a chemical reaction with a component of the composition enclosed within the water-soluble packet in an aqueous solution.

20. The water-soluble packet according to claim 16 , wherein either the active agent is unstable in the presence of a component of the composition enclosed within the water-soluble packet, or a component of the composition enclosed within the water-soluble packet is unstable in the presence of the active agent, or both the active agent and a component of the composition enclosed within the water-soluble packet are unstable in the presence of each other.

21. The water-soluble packet according to claim 19 , wherein
the composition enclosed within the water-soluble packet comprises a percarbonate; and
the active agent comprises tetraacytylethylenediamine (TAED).

22. The water-soluble packet according to claim 20 , wherein the composition enclosed within the packet comprises a first enzyme, the active agent comprises a second enzyme, and the first enzyme and second enzyme are unstable in the presence of each other.

23. A water-soluble packet, comprising:
a water-soluble film in the form of a packet; and
a powder coating on the film in the form of a packet, the powder coating comprising:
a powdered lubricant and
a microencapsulated active agent microencapsulated by a microcapsule, p

Assignees

• Monosol Llc

Inventors

• Lee David M
• Parulekar Yashodhan S

Classifications

• B65D65/46 Primary

  Applications of disintegrable, dissolvable or edible materials · CPC title

• C08J7/06

  with compositions not containing macromolecular substances · CPC title

• C11D17/042

  Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions · CPC title

• C11D3/505

  encapsulated or adsorbed on a carrier, e.g. zeolite or clay · CPC title

• C08J2300/14

  Water soluble or water swellable polymers, e.g. aqueous gels · CPC title