Multilayer cleaning article with gripping layer and dry surface contact layer

Patent metadata

Field	Value
Publication number	US-11730336-B2
Application number	US-202217901359-A
Country	US
Kind code	B2
Filing date	Sep 1, 2022
Priority date	Dec 15, 2015
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

The present invention teaches multilayer cleaning articles that include a substantially dry surface contact layer and a gripping layer. The contact layer may represent one exposed major face of the cleaning article (e.g., a cleaning pad), while the gripping layer may represent the opposite exposed major face of the cleaning article. The contact layer may include abrasive synthetic fibers, so as to be effective in scrubbing soils and spills from a surface. The contact layer includes a cleaning composition pre-loaded therein. The cleaning composition is such that the contact layer feels dry to the touch prior to use, before wetting with water. The cleaning composition may include about 1% to about 40% by weight water. The gripping layer includes at least 40% by weight of pulp fibers (e.g., natural cellulose pulp fiber), and exhibits a mean hand grip value that is at least 0.015 1 /in 2 (reciprocal inches squared).

First claim

The invention claimed is:

1. A multilayer cleaning article comprising: (a) a substantially dry surface contact layer comprising: a cleaning composition loaded onto the surface contact layer, the cleaning composition comprising: about 10% to about 90% by weight of surfactant; and about 0.01% to about 2% by weight of fragrance; (b) a gripping layer comprising: at least 40% by weight of pulp fibers; and (c) a barrier layer positioned between the surface contact layer and gripping layer so that the cleaning composition does not migrate from the surface contact layer into the gripping layer and the gripping layer remains substantially dry.

2. The cleaning article of claim 1 , wherein the cleaning composition further comprises an acid.

3. The cleaning article of claim 1 , wherein a major face of the surface contact layer comprises a pattern.

4. The cleaning article of claim 1 wherein the cleaning composition further comprises a chelating agent.

5. The cleaning article of claim 1 wherein the cleaning composition comprises an alkyl polyglucoside surfactant.

6. The cleaning article of claim 1 wherein the cleaning composition comprises 1% to 40% by weight of water.

7. The cleaning article of claim 1 wherein one or more layers of the multilayer cleaning article are sonically bonded together.

8. The cleaning article of claim 1 further comprising a loft layer adjacent to said barrier layer.

9. The cleaning article of claim 1 wherein a thickness of all the layers of the multilayer cleaning article measured together is between about 2 mm and 6 mm.

10. The cleaning article of claim 1 wherein the gripping layer has a mean coefficient of friction of at least 0.2.

11. A multilayer cleaning article comprising: (a) a substantially dry surface contact layer comprising: a. a face of the surface contact layer comprises a pattern; and b. a cleaning composition loaded onto the surface contact layer, the cleaning composition comprising: about 10% to about 90% by weight of surfactant; i. about 0.01% to about 2% by weight of fragrance; and ii. an adjunct selected from one or more of: a dye, a preservative, a solvent, a humectant, a pH adjuster, a chelating agent, an oxidizing agent, or a polymer; (b) a moisture impermeable barrier layer positioned between the surface contact layer and gripping layer so that the cleaning composition does not migrate from the surface contact layer into the gripping layer; and (c) a substantially dry gripping layer comprising: at least 40% by weight of pulp fibers;
and wherein the contact layer is of one color while the cleaning composition is of a contrasting color, to allow a user to see the dried cleaning composition on the contact layer, providing a visual indicator that the contact layer retains cleaning composition therein.

12. The cleaning article of claim 11 wherein the cleaning composition comprises a sulfate surfactant.

13. The cleaning article of claim 11 wherein the cleaning composition comprises an alkyl polyglucoside surfactant.

14. The cleaning article of claim 11 wherein the cleaning composition comprises 1% to 40% by weight of water.

15. The cleaning article of claim 11 wherein the cleaning composition comprises an acid.

16. The cleaning article of claim 11 wherein a thickness of all the layers of the multilayer cleaning article measured together is between about 2 mm and 6 mm.

17. The cleaning article of claim 11 wherein the gripping layer has a mean coefficient of friction of at least 0.2.

18. A multilayer cleaning article consisting of:
(a) a substantially dry surface contact layer comprising:
a. a patterned face of the surface contact layer; and
b. a hard surface cleaning composition comprising:
i. about 10% to about 90% by weight of surfactant;
ii. about 0.01% to about 2% by weight of fragrance; and
iii. an acid; and

(b) a barrier layer adjacent to a substantially dry gripping layer preventing the cleaning composition from migrating from the surface contact layer into the gripping layer and allowing the gripping layer to remain substantially dry even when the surface contact layer is wet;
(c) optionally, a loft layer; and
(d) a substantially dry gripping layer comprising:
at least 40% by weight of pulp fibers;

wherein the contact layer is of one color while the cleaning composition is of a contrasting color, to allow a user to see the dried cleaning composition on the contact layer, providing a visual indicator that the contact layer retains cleaning composition therein.

19. The cleaning article of claim 18 wherein a thickness of all the layers of the multilayer cleaning article measured together is between about 2 mm and 6 mm.

20. The cleaning article of claim 18 wherein the gripping layer has a mean coefficient of friction of at least 0.2.

Assignees

• Clorox Co

Inventors

• Calimano Elisa
• Fritter Daniela
• Perlas Kristina
• White Jason
• Khin Chosu
• Hope Janiece
• Hill Bernard
• Fisher Stephen
• Dickson Kelly
• Ouellette William

Classifications

• A47L13/16 Primary

  Cloths; Pads; Sponges (metal scraping sponges A47L13/07) · CPC title

• B32B1/00

  Layered products having a non-planar shape · CPC title

• B32B3/26

  characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids {(foam layer B32B5/18; layer of synthetic resin characterised by fillers that create voids or cavities B32B27/205); characterised by an apertured layer} · CPC title

• B32B5/022

  Non-woven fabric · CPC title

• B32B5/26

  another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} · CPC title