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US 12,685,378 B2Granted
Methods and systems for producing a bio-based cosmetic sponge and blender
AssigneeRea.Deeming Beauty, Inc.
InventorsRea Ann Silva, Philip Hamilton Sheridan
Life of this patent
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Abstract
Systems, devices, and methods for a cosmetic sponge comprising: a prepolymer material and a bio-based material, where the prepolymer material and the bio-based material are reacted with an additive component comprising water and bio-based material dissolved in the water.
Claims11
A cosmetic sponge comprising:
- a polyurethane foam formed as a two-layer foam including
- a bottom layer having a first density and a top layer having a second density, wherein the second density is lower than the first density, and wherein the bottom layer and the top layer have a density ratio of 7:5 as measured by mass per unit volume;
- wherein the polyurethane foam comprises a bio-based material comprising Zein;
- wherein the bio-based material is incorporated into at least one of:
- the bottom layer and the top layer during formation of the polyurethane foam;
- and
- wherein the cosmetic sponge is substantially free of traces of tin and substantially free of traces of amine.
4 more elements
A method of forming a cosmetic sponge, comprising:
- forming a bottom layer of polyurethane foam having a first density;
- forming a top layer of polyurethane foam having a second density, wherein the second density is lower than the first density;
- and
- combining the bottom layer and the top layer to form a cosmetic sponge,
- wherein the bottom layer and the top layer have a density ratio of 7:5 as measured by mass per unit volume,
- wherein the polyurethane foam comprises a bio-based material comprising Zein, and
- wherein forming the polyurethane foam is performed without introducing tin-based catalysts or amine-based catalysts, such that the cosmetic sponge is substantially free of traces of tin and substantially free of traces of amine.
4 more elements
Dependencies are inferred from the claim text.