High quality non-aerosol hand sanitizing foam

Patent metadata

Field	Value
Publication number	US-10441115-B2
Application number	US-201715429389-A
Country	US
Kind code	B2
Filing date	Feb 10, 2017
Priority date	Feb 11, 2016
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

High quality non-aerosol foam sanitizers include a liquid mixture that includes an alcohol, water and a surfactant mixed with and entrapping air to form a plurality of foam bubbles. Wherein more than about 50 percent of the foam bubbles have a size of between about 50 μm and about 250 μm.

First claim

The invention claimed is:

1. A non-aerosol foam sanitizer comprising:
a liquid mixture that includes c1-c8 alcohol in an amount of between 40% and 85% by weight, water and a surfactant mixed with and entrapping ambient air sourced from the atmosphere to form a plurality of foam bubbles;
wherein more than about 50 percent of the foam bubbles have a diameter of between about 50 μm and about 250 μm;
wherein the foam bubbles are generated using a liquid pump portion for pumping the liquid mixture that includes c1-c8 alcohol, water and a surfactant and two or more air pump portions for pumping atmospheric air into a mixing chamber for mixing the foamable the liquid mixture with the atmospheric air to form the bubbles having the above size as the bubbles are dispensed; and
wherein the liquid pump portion and the two or more air pump portions are activated sequentially.

2. The non-aerosol foam sanitizer of claim 1 wherein the foam bubbles have a density of greater than about 0.10 grams/millimeter.

3. The non-aerosol foam sanitizer of claim 1 wherein the surfactant comprises a compound containing silicone.

4. The non-aerosol foam sanitizer of claim 1 wherein the surfactant comprises silane.

5. The non-aerosol foam sanitizer of claim 1 wherein the surfactant comprises dimethicone.

6. The non-aerosol foam sanitizer of claim 1 wherein the alcohol by volume greater than about 60%.

7. A non-aerosol foam sanitizer comprising:
a liquid mixture that includes at least about 40% of a c1-c8 alcohol, water and a surfactant mixed with and entrapping ambient air sourced from the atmosphere to form a plurality of foam bubbles;
wherein when the liquid mixture is passed through an non-aerosol foam pump, the average diameter of the foam bubbles are less than about 190 μm;

wherein the non-aerosol foam pump comprises a liquid pump portion for pumping the liquid mixture that includes c1-c8 alcohol, water and a surfactant and two or more air pump portions for pumping atmospheric air into a mixing chamber for mixing the foamable the liquid mixture with the atmospheric air to form the bubbles having the above size as the bubbles are dispensed; and
wherein the liquid pump portion and the two or more air pump portions are activated sequentially.

8. The high quality non-aerosol foam sanitizer of claim 7 wherein the average diameter of the foam bubbles are between about 160 μm and 190 μm.

9. The non-aerosol foam sanitizer of claim 7 wherein the average diameter of the foam bubbles is about 180 μm.

10. The non-aerosol foam sanitizer of claim 7 wherein the foam bubbles have a density of greater than about 0.10 grams/millimeter.

11. The non-aerosol foam sanitizer of claim 7 wherein the surfactant comprises a compound containing silicone.

12. The non-aerosol foam sanitizer of claim 7 wherein the alcohol by volume greater than about 70%.

13. The non-aerosol foam sanitizer of claim 7 wherein the alcohol by volume greater than about 60%.

14. A non-aerosol foam pump for producing foam sanitizer comprising:
a liquid pump portion for pumping a foamable sanitizer containing c1-c8 alcohol, water and a surfactant;
two or more air pump portions for pumping atmospheric air;
a mixing chamber for mixing the foamable sanitizer with the atmospheric air to form a foam having foam bubbles that is dispensed from the pump;
wherein more than about 50 percent of the dispensed foam bubbles have a diameter of less than about 250 μm;
wherein the liquid pump portion and the two or more air pump portions are activated sequentially.

15. The non-aerosol foam pump for producing foam sanitizer of claim 14 wherein more than about 50 percent of the dispensed foam bubbles have a diameter of between about 50 μm and about 250 μm.

16. The non-aerosol foam pump for producing foam sanitizer of claim 14 wherein the liquid pump portion and air pump portions are diaphragms.

17. The non-aerosol foam pump for producing foam sanitizer of claim 14 further comprising a foam cartridge that includes a plurality of sponges, wherein at least two sponges have different properties.

18. The non-aerosol foam pump of for producing foam sanitizer claim 17 wherein the different properties are firmness properties.

Assignees

• Gojo Ind Inc

Inventors

• Ciavarella Nick E

Classifications

• F04B19/06

  Pumps for delivery of both liquid and elastic fluids at the same time (wet gas pumps F04B37/20) · CPC title

• F04B13/02

  of two or more fluids at the same time · CPC title

• F04B45/043

  two or more plate-like pumping flexible members in parallel · CPC title

• F04B43/026

  each plate-like pumping flexible member working in its own pumping chamber · CPC title

• F04B23/02

  having reservoirs · CPC title