Dissolvable pads for solution delivery to a surface
View Patent ↗A dissolvable pad for delivery of a solution to a surface includes a water soluble substrate, and a solution retained in or on said water soluble substrate and available for use without activation by water. The water soluble substrate is soluble in water so as to be safely disposable into public water systems by exposing it to water after the solution therein has been desirably employed. Because the solution in the water soluble substrate is available for use without exposing the substrate to water, the substrate may function as an applicator, and, in some embodiments, as a scrubbing substrate as well.
1. A dissolvable pad for delivery of a solution to a surface, the dissolvable pad comprising:
a water-soluble substrate selected from a water-soluble starch-based material and a polyvinyl alcohol material; and
a solution impregnating or surface coated on said water-soluble substrate and released therefrom upon pressing and rubbing said water-soluble substrate against a surface such that the solution is delivered and rubbed onto the surface, said solution being released from the substrate without contacting the substrate with water.
2. The dissolvable pad of claim 1 , wherein the starch of the starch-based material is derived from the group consisting of potato, corn, wheat and rice.
3. The dissolvable pad of claim 1 , wherein said water-soluble substrate is a water-soluble starch-based material and said solution is retained in said water-soluble substrate by being impregnated therein.
4. The dissolvable pad of claim 3 , wherein said solution is impregnated in said water-soluble substrate by being absorbed or injected therein.
5. The dissolvable pad of claim 1 , wherein said water-soluble substrate is a polyvinyl alcohol material and said solution is retained on said water-soluble substrate by being surface coated thereon.
6. The dissolvable pad of claim 5 , wherein said solution is surface coated onto said water-soluble substrate by being sprayed thereon.
7. The dissolvable pad of claim 1 , wherein said water-soluble substrate is abrasive.
8. The dissolvable pad of claim 1 , wherein said solution is selected from the group consisting of personal care cleaning compounds, surface cleaning compounds, bug repellant compounds, and sun screen compounds.
9. The dissolvable pad of claim 1 , wherein said water soluble substrate is safely disposable in public and other water systems, and does not pollute ground water.
10. A dissolvable pad for delivery of a solution to a surface, the dissolvable pad comprising:
a foam-like water-soluble substrate made of an extruded starch-based material and including micro-voids; and
a solution selected from a cleaning solution and a sanitizing solution, said solution being retained in said water-soluble substrate such that said cleaning solution can be applied to a surface by rubbing the water-soluble substrate against said surface, wherein said micro-voids serve to scrub said surface and the application of water is not necessary for releasing the cleaning solution from said water-soluble substrate.
11. The dissolvable pad of claim 1 , wherein said solution is a cleaning solution for personal care comprising:
from 10 to 90% by weight of compounds selected from the group consisting of aliphatic hydrocarbons, terpene hydrocarbons, alcohols, polyols, dibasic esters, vegetable oils, esters of vegetable oils, silicon oils, acetates, lactates, n-methyl pyrrolidones, carbonate solvents, oxidizing agents, and combinations thereof,
from 0 to about 10% by weight detergents,
from 0 to about 2% by weight water, and
from 0.05 to about 15% by weight of the group selected from antimicrobials, colorants, fragrances, moisturizers, and combinations thereof.
12. The dissolvable pad of claim 1 , wherein said solution is a sanitizing solution comprising:
from 70 to 100% by weight alcohol,
from 0 to 30% by weight water, and
from 0 to 15% by weight of additives selected from the group consisting of antimicrobials, colorants, fragrance, moisturizers, and the like.