Water-soluble unit dose article including water-soluble core construction
AssigneeMonosol, LLC
InventorsJonathon D. Knight, Victoria Bridewell, Ramya Ramaswamy, Ryan Slopek
Life of this patent
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Abstract
A single unit dose article includes a water-soluble core substrate comprising a water-soluble resin. The water-soluble core substrate contains a carrier solvent with an active cleaning formulation, wherein upon contact of the carrier solvent with the water-soluble core substrate, the water-soluble core substrate exhibits shrinkage or swelling. Also disclosed are methods of making the single unit dose article.
Claims12
A method for making a single unit dose article containing a carrier solvent with an active cleaning formulation, the method comprising:
- forming a water-soluble core substrate comprising a plurality of fibers including a water-soluble resin, the water-soluble core substrate containing a carrier solvent with an active cleaning formulation, wherein the carrier solvent comprises water, wherein the water-soluble resin comprises a polyvinyl alcohol polymer and wherein upon contact of the carrier solvent with at least one fiber of the plurality of fibers at a temperature in a range from 10° C. to 20° C. for five minutes or longer, the water-soluble core substrate exhibits a degree of shrinkage of 0.5% to 65% and the water-soluble core substrate, when contacted with water having a temperature as low as 5° C. to 10° C., disintegrates in a time period of not more than 300 seconds to release the active cleaning formulation;
- forming an outer water-soluble material comprising at least one of a water-soluble nonwoven material, a water-soluble foam material, a water-soluble film material, or a composite material thereof, into an open pouch defining an interior volume configured to contain the water-soluble core substrate and the carrier solvent with the active cleaning formulation;
- introducing the water-soluble core substrate and the carrier solvent with the active cleaning formulation into the interior volume;
- and
- sealing the outer water-soluble material to enclose the interior volume.
A method for making a single unit dose article containing a carrier solvent with an active cleaning formulation, the method comprising:
- forming a water-soluble core substrate comprising a plurality of fibers including a water-soluble resin, the water-soluble core substrate containing a carrier solvent with an active cleaning formulation, wherein the carrier solvent comprises water and wherein upon contact of the carrier solvent with at least one fiber of the plurality of fibers at a temperature in a range from 10° C. to 20° C. for five minutes or longer, the water-soluble core substrate exhibits a degree of shrinkage of 0.5% to 65%, and the water-soluble core substrate, when contacted with water having a temperature as low as 5° C. to 10° C., disintegrates in a time period of not more than 300 seconds to release the active cleaning formulation;
- forming an outer water-soluble material comprising at least one of a water-soluble nonwoven material, a water-soluble foam material, a water-soluble film material, or a composite material thereof, into an open pouch defining an interior volume configured to contain the water-soluble core substrate and the carrier solvent with the active cleaning formulation;
- introducing the water-soluble core substrate and the carrier solvent with the active cleaning formulation into the interior volume;
- and
- sealing the outer water-soluble material to enclose the interior volume,
- wherein the outer water-soluble material comprises a water-soluble film laminated to a water-soluble nonwoven material.
Dependencies are inferred from the claim text.