초록 ▼

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

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.

대표청구항 ▼

1. A water soluble film, comprising a water soluble mixture of a water soluble resin,a compatibilizing agent, anda sugar alcohol plasticizer that is a solid at room temperature,wherein the water soluble film is substantially transparent. 2. The water soluble film of claim 1, wherein the sugar alcoho

1. A water soluble film, comprising a water soluble mixture of a water soluble resin,a compatibilizing agent, anda sugar alcohol plasticizer that is a solid at room temperature,wherein the water soluble film is substantially transparent. 2. The water soluble film of claim 1, wherein the sugar alcohol plasticizer is included in an amount of about 20 phr or less and is characterized by a heat of fusion of about 247 J/g or less. 3. The water soluble film of claim 1, wherein the sugar alcohol plasticizer is included in an amount of about 25 to about 35 phr and is characterized by a heat of fusion of about 192 J/g or less. 4. The water soluble film of claim 1, wherein the compatibilizing agent is carboxymethyl cellulose;wherein the sugar alcohol plasticizer that is a solid at room temperature comprises xylitol and a second sugar alcohol plasticizer that is a solid at room temperature; andwherein the water soluble film, when 2.0 mils thick, dissolves in less than 50 seconds in water at 23° C. 5. The water soluble film of claim 1, wherein the water soluble film has a tear strength of at least 400 g/mL. 6. The water soluble film of claim 4, wherein the ratio of compatibilizing agent to xylitol is about 3:1. 7. The water soluble film of claim 1, wherein the water soluble film is edible. 8. The water soluble film of claim 1, wherein the water soluble resin is included in the film in an amount in a range of about 35 to about 90 wt. %, based on the total weight of the film. 9. The water soluble film of claim 8, wherein the water soluble resin is selected from the group consisting of polyvinyl alcohol, modified polyvinyl alcohols, water-soluble natural polymers including, guar gum, xanthan gum, carrageenan, and starch, water-soluble polymer derivatives including, ethoxylated starch and hydroxypropylated starch, copolymers of the forgoing, or any combination of the forgoing. 10. The water soluble film of claim 9, wherein the water soluble resin comprises polyvinyl alcohol. 11. The water soluble film of claim 10, wherein the water soluble resin comprises polyvinyl alcohol with a degree of hydrolysis in a range of about 75% to about 99%. 12. The water soluble film of claim 11, wherein the polyvinyl alcohol is further characterized by a weight average molecular weight in a range of about 55, 000 to about 80,000. 13. The water soluble film of claim 1, wherein the sugar alcohol plasticizer that is a solid at room temperature is included in the film an amount in a range of about 5 to about 35 parts per hundred parts resin (phr). 14. The water soluble film of claim 13, wherein the sugar alcohol plasticizer comprises at least two sugar alcohol plasticizers that are solid at room temperature. 15. The water soluble film of claim 1, wherein the sugar alcohol plasticizer that is a solid at room temperature is characterized by a heat of fusion of less than about 274 J/g. 16. The water soluble film of claim 1, wherein the sugar alcohol plasticizer that is a solid at room temperature is characterized by a heat of fusion of less than about 192 J/g. 17. The water soluble film according to claim 1, wherein the sugar alcohol plasticizer that is a solid at room temperature is selected from the group consisting of isomalt, maltitol, sorbitol, adonitol, xylitol, and combinations of any of the forgoing. 18. The water soluble film of claim 17, wherein the sugar alcohol plasticizer that is a solid at room temperature comprises a mixture of xylitol with at least one member of the group consisting of maltitol, sorbitol, and isomalt. 19. The water soluble film according to claim 1, wherein the compatibilizing agent is selected from the group consisting of a cellulose ether, modified starch, polysaccharides of pectin, polysaccharides of sodium alginate, or combinations thereof. 20. The water soluble film according to claim 19, wherein the compatibilizing agent comprises carboxymethyl cellulose. 21. The water soluble film according to claim 20, wherein the carboxymethyl cellulose has a degree of substitution in a range of about 0.6 to about 0.95. 22. The water soluble film of claim 19, wherein the compatibilizing agent is included in the film in an amount in a range of about 10 to about 25 phr. 23. The water soluble film of claim 1, wherein the ratio of compatibilizing agent to sugar alcohol plasticizer that is a solid at room temperature is about 2:1 to about 1:2. 24. The water soluble film of claim 1, further comprising a liquid plasticizer selected from the group consisting of glycerol, diglycerol, propylene glycol, ethylene glycol, diethyleneglycol, triethylene glycol, tetraethyleneglycol, polyethylene glycols up to MW 400, 2 methyl 1,3 propane diol and combinations of the forgoing. 25. The water soluble film according to claim 24, wherein the liquid plasticizer is present in the film an amount in a range of about 25 to about 50 phr. 26. The water soluble film of claim 1, further comprising a surfactant. 27. The water soluble film according to claim 26, wherein the surfactant is selected from the group consisting 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 combinations of any of the forgoing. 28. The water soluble film according to claim 27, wherein the surfactant is present in the film an amount in of less than about 2 phr. 29. The water soluble film of claim 1, wherein the film is heat sealable. 30. The water soluble film of claim 29, wherein the film further is thermoformable. 31. The water soluble film of claim 1, wherein the film maintains a Δ% opacity of 2.0% or less for at least 4 days longer than an otherwise identical film having no compatibilizing agent. 32. An article, comprising a water soluble packet comprising a film of claim 1.