Edible water-soluble film

Patent metadata

Field	Value
Publication number	US-11945936-B2
Application number	US-202017061056-A
Country	US
Kind code	B2
Filing date	Oct 1, 2020
Priority date	Jan 11, 2013
Publication date	Apr 2, 2024
Grant date	Apr 2, 2024

Abstract

Disclosed herein are water-soluble films and resulting packets including a water soluble film, wherein the water-soluble film includes a water-soluble mixture of polyvinyl alcohol, a compatibilizing agent, and a sugar alcohol plasticizer that is a solid at room temperature, wherein the water-soluble film is substantially transparent.

First claim

What is claimed:

1. A water soluble film, consisting of a water soluble mixture of:
a water soluble resin comprising polyvinyl alcohol, a modified polyvinyl alcohol, or a combination thereof, wherein the polyvinyl alcohol, modified polyvinyl alcohol, or combination thereof is present in an amount in a range of about 35 to about 90 wt. %, based on the total weight of the film;
a compatibilizing agent in an amount of about 15 to about 25 parts per one hundred parts of the polyvinyl alcohol, modified polyvinyl alcohol, or combination thereof (phr), wherein the compatibilizing agent is selected from the group of carboxymethyl cellulose, hydroxypropylated starch, and a combination thereof;
a sugar alcohol plasticizer that is a solid at room temperature in an amount of about 5 to about 35 phr, wherein the sugar alcohol plasticizer that is a solid at room temperature is selected from the group of maltitol, sorbitol, xylitol, and any combination thereof
optionally one or more excipients selected from the group consisting of a plasticizer that is a liquid at room temperature, a surfactant, an antiblocking agent, and an internal release agent.

2. The water soluble film of claim 1 , wherein the sugar alcohol plasticizer is included in an amount of about 10 to about 20 phr.

3. The water soluble film of claim 1 , wherein, when the sugar alcohol is sorbitol or xylitol, and the sugar alcohol is included in an amount of about 10 to about 25 phr.

4. The water soluble film of claim 1 , wherein the compatibilizing agent is carboxymethyl cellulose and the sugar alcohol comprises sorbitol.

5. The water soluble film of claim 4 , wherein the carboxymethyl cellulose has a degree of substitution in a range of about 0.6 to about 0.95.

6. The water soluble film of claim 4 , wherein the carboxymethyl cellulose has a 2% aqueous solution viscosity in a range of about 20 to about 80 cP.

7. The water soluble film of claim 1 , wherein the ratio of compatibilizing agent to sugar alcohol is in a range of about 2:1 to about 1:2.

8. The water soluble film of claim 1 , wherein the water soluble film, when cast to a thickness of 2.0 mils (0.051 mm), is substantially transparent according to having an opacity of 37% or less, after storing for 30 days after film formation.

9. The water soluble film of claim 1 , wherein the water soluble film is edible.

10. The water soluble film of claim 1 , wherein the water soluble resin comprises polyvinyl alcohol with a degree of hydrolysis in a range of about 75% to about 99%.

11. The water soluble film of claim 10 , wherein the polyvinyl alcohol is characterized by a weight average molecular weight in a range of about 80,000 g/mol to about 175,000 g/mol.

12. The water-soluble film of claim 1 , wherein the excipient is an antiblocking agent.

13. The water soluble film of claim 1 , wherein the plasticizer that is a liquid at room temperature is selected from the group of glycerol, diglycerol, propylene glycol, ethylene glycol, diethyleneglycol, triethylene glycol, tetraethyleneglycol, polyethylene glycols up to MW 400 g/mol, 2-methyl-1,3 propanediol, lactic acid, and any combination of the forgoing.

14. The water soluble film of claim 13 , wherein the liquid plasticizer is glycerol and propylene glycol.

15. The water soluble film of claim 13 , wherein the liquid plasticizer is present in the film an amount in a range of about 25 to about 50 phr.

16. The water soluble film of claim 1 , wherein the surfactant is selected from the group of dioctyl sodium sulfosuccinate, lactylated fatty acid esters of glycerol and propylene glycol, lactylic esters of fatty acids, sodium alkyl sulfates, polysorbate 20, polysorbate 60, polysorbate 65, polysorbate 80, lecithin, acetylated fatty acid esters of glycerol and propylene glycol, and acetylated esters of fatty acids, and any combination of the forgoing.

17. The water soluble film of claim 1 , wherein the film is heat sealable, thermoform able, or both.

18. An article, comprising a water soluble packet comprising the film of claim 1 .

Assignees

• Monosol Llc

Inventors

• Lee David M
• Childers Jennifer L

Classifications

• C08L1/286 Primary

  substituted with acid radicals, e.g. carboxymethyl cellulose [CMC] (C08L1/282 takes precedence) · CPC title

• A23L27/34

  Sugar alcohols · CPC title

• A23L29/262

  Cellulose; Derivatives thereof, e.g. ethers · CPC title

• A23L29/288

  Synthetic resins, e.g. polyvinylpyrrolidone · CPC title

• A23P20/20

  Making of laminated, multi-layered, stuffed or hollow foodstuffs, e.g. by wrapping in preformed edible dough sheets or in edible food containers · CPC title