Methods of and system for generating antimicrobial wipes

Patent metadata

Field	Value
Publication number	US-11825841-B2
Application number	US-202117156690-A
Country	US
Kind code	B2
Filing date	Jan 25, 2021
Priority date	Aug 31, 2015
Publication date	Nov 28, 2023
Grant date	Nov 28, 2023

Abstract

Exemplary methods of and system for generating an antimicrobial wipe to clean and disinfect a surface contaminated with bacteria, viruses, spores, fungi, or combinations thereof. In some embodiments, the method includes applying non-thermal plasma to a moistened wipe to activate a liquid in the wipe. In some embodiments, the method includes applying non-thermal plasma to a liquid and then applying the activated liquid to a wipe. In one embodiment of a system for generating an antimicrobial wipe the system includes a housing having an opening; a supply of wipes disposed within the housing; a non-thermal plasma generator disposed within the housing; a power supply electrically coupled to the non-thermal plasma generator; and a feed system disposed within the housing, wherein the feed system moves one or more wipes from the supply of wipes past the plasma generator and out of the opening. As the feed system moves the wipes past the plasma generator, the plasma generator applies non-thermal plasma to the wipes.

First claim

We claim:

1. A method of generating an antimicrobial wipe for a user to be used within a set period of time, comprising:
providing the wipe;
providing a fluid that comprises water and optionally one or more additional additives, wherein the fluid has properties that change when contacted by non-thermal plasma such that the fluid after being contacted by the non-thermal plasma contains the one or more of ozone, hydrogen peroxide, nitrates, nitrites, peroxynitrious acid, peroxynitrite, hydroxyl radicals or other active species;
applying the non-thermal plasma the fluid to activate the fluid so that the fluid contains one or more of ozone, hydrogen peroxide, nitrates, nitrites, peroxynitrious acid, peroxynitrite, hydroxyl radicals or other active species; and
dispensing the wipe to a user, wherein the wipe contains fluid having the one or more of ozone, hydrogen peroxide, nitrates, nitrites, peroxynitrious acid, peroxynitrite, hydroxyl radicals or other active species; and
wherein the one or more of ozone, hydrogen peroxide, nitrates, nitrites, peroxynitrious acid, peroxynitrite, hydroxyl radicals or other active species give the wipe antimicrobial properties.

2. The method of claim 1 wherein the fluid is applied to the wipe prior to the fluid being contacted by the non-thermal plasma.

3. The method of claim 1 wherein the fluid is contacted by the non-thermal plasma prior to being applied to the wipe.

4. The method of claim 1 wherein the wipe and fluid are provided in a sealed package and wherein applying the non-thermal plasma to the fluid comprises creating non-thermal plasma inside the sealed package by a non-thermal plasma generator located outside of the sealed package.

5. The method of claim 4 wherein the sealed package is made of a dielectric material.

6. The method of claim 4 wherein the wipe has a first face and a second face, opposite the first face, and wherein one or more spacers are positioned within the package such that an air gap is formed between the first face and the package and an air gap is formed between the second face and the package.

7. The method of claim 1 further comprising sensing a condition of one of the fluid and the wipe and discontinuing applying the non-thermal plasma to the wipe and the fluid when the sensed condition reaches a threshold value.

8. The method of claim 7 wherein the sensed condition is a pH value of the fluid in the wipe.

9. The method of claim 7 wherein the sensed condition is indicative of an antimicrobial efficacy of the wipe.

10. The method of claim 1 further comprising:
providing a signal when a duration of time has occurred after the non-thermal plasma has discontinued being applied to the one of the fluid.

11. A method of generating an antimicrobial wipe, comprising:
providing a wipe;
providing a fluid that comprises water and optionally one or more additional additives;
applying non-thermal plasma to the fluid to activate the fluid so the fluid contains one or more of ozone, hydrogen peroxide, nitrates, nitrites, peroxynitrious acid, peroxynitrite, hydroxyl radicals or other active species
providing the wipe moistened with the fluid that contains the one or more of ozone, hydrogen peroxide, nitrates, nitrites, peroxynitrious acid, peroxynitrite, hydroxyl radicals or other active species and
wherein the one or more of ozone, hydrogen peroxide, nitrates, nitrites, peroxynitrious acid, peroxynitrite, hydroxyl radicals or other active species give the wipe antimicrobial properties.

12. The method of claim 11 wherein the fluid is applied to the wipe after activation of the fluid.

13. The method of claim 12 wherein the fluid is applied to the wipe before activation of the fluid.

14. The method of claim 11 further comprising providing an activity timer for providing an indication of the time that the wipe contains activated fluid.

15. The method of claim 11 further comprising providing an activity timer for providing an indication that the wipe moistened with fluid should be discarded.

16. The method of claim 11 further comprising:
applying plasma to the wipe prior to applying fluid to the wipe to improve the wipe wettability.

17. A wipes dispenser comprising:
a roll of wipes comprising one or more wipes;
a fluid reservoir configured to provide fluid that comprises water and optionally one or more additional additives to moisten the one or more wipe;
a non-thermal plasma generator;
the non-thermal plasma generator comprising a first surface and a second surface;
wherein the non-thermal plasma generator is configured to create non-thermal plasma between the first surface and the second surface;
one or more rollers for guiding the one or more wipes moistened with fluid between the first surface and the second surfaces of the plasma generator;
wherein when the fluid is contacted with the non-thermal plasma, the fluid is activated and upon activation the fluid contains one or more of ozone, hydrogen peroxide, nitrates, nitrites, peroxynitrious acid, peroxynitrite, hydroxyl radicals or other active species; and
a dispenser outlet for providing the one or more wipes moistened with the fluid containing one or more of ozone, hydrogen peroxide, nitrates, nitrites, peroxynitrious acid, peroxynitrite, hydroxyl radicals or other active species to a user and
wherein the one or more of ozone, hydrogen peroxide, nitrates, nitrites, peroxynitrious acid, peroxynitrite, hydroxyl radicals or other active species give the wipe antimicrobial properties.

18. The wipes dispenser of claim 17 further comprising one or more nozzles for spraying fluid on the one or more wipes to moisten the wipe.

19. The wipes dispenser of claim 17 further comprising a reservoir for holding one or more wipes moistened with the fluid.

20. The wipes dispenser of claim 17 further comprising a cutting edge for separating a wipe from the roll of wipes.

Assignees

• Gojo Ind Inc

Inventors

• Tsai Tsung-Chan
• Louis Jeffrey S
• Pappas Antonakas Daphne
• Kalghatgi Sameer
• Gray Robert L

Classifications

• A61L2103/05

  Living organisms or biological materials · CPC title

• A61L2/02

  using physical processes · CPC title

• A61L2/18

  Liquid substances · CPC title

• A01N25/34 Primary

  Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group · CPC title

• A01N25/00

  Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application {, e.g. seed treatment or sequential application}; Substances for reducing the noxious effect of the active ingredients to organisms other than pests · CPC title