# US 11,439,289 B2 · Multilayer cleaning article with gripping layer and dry surface contact layer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,439,289 B2 - Document ID: US11439289B2 - Status: Granted - Kind: B2 - Application number: 17/110,135 - Filed: 2020-12-02 - Published: 2021-03-25 - Granted: 2022-09-13 - Earliest claimed: 2015-12-15 - Assignees: The Clorox Company - Applicants: The Clorox Company - Inventors: Elisa Calimano; Daniela Fritter; Kristina Perlas; Jason White; Chosu Khin; Janiece Hope; Bernard Hill; Stephen Fisher; Kelly Dickson; William Ouellette - Web page: https://patentgrep.com/patent/US11439289B2 ## CPC - A47L 13/16: Cloths; Pads; Sponges (metal scraping sponges A47L13/07) - B32B 1/00: Layered products having a non-planar shape - B32B 3/26: 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} - B32B 5/022: {Non-woven fabric} - B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} - B32B 7/02: Physical, chemical or physicochemical properties - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - B32B 27/12: next to a fibrous or filamentary layer - B32B 27/302: {comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers} - B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} - B32B 27/36: comprising polyesters - B32B 27/40: comprising polyurethanes - B32B 27/42: comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines - C11D 17/049: {Cleaning or scouring pads; Wipes} - B32B 5/16: characterised by features of a layer formed of particles, e.g. chips, powder {or granules (layer formed of natural mineral particles B32B19/00; layer being formed of wood fibres, chips or particles B32B21/02)} - B32B 2250/02: 2 layers - B32B 2250/04: 4 layers - B32B 2262/02: Synthetic macromolecular fibres - B32B 2262/023: Aromatic vinyl resin, e.g. styrenic (co)polymers - B32B 2262/0253: Polyolefin fibres - B32B 2262/0276: Polyester fibres - B32B 2262/0284: Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT] - B32B 2262/0292: Polyurethane fibres - B32B 2262/062: Cellulose fibres, e.g. cotton - B32B 2262/14: Mixture of at least two fibres made of different materials - B32B 2307/402: Coloured - B32B 2307/7265: Non-permeable - B32B 2307/732: Dimensional properties - B32B 2432/00: Cleaning articles, e.g. mops or wipes - A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL ## 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 l/in2 (reciprocal inches squared). ## Claims ### Claim 1 A multilayer cleaning article comprising: (a) a substantially dry surface contact layer comprising: a. a cleaning composition loaded onto the surface contact layer, the cleaning composition comprising: i. about 10% to about 90% by weight of surfactant; and ii. about 0.01% to about 2% by weight of fragrance; (b) a gripping layer comprising: a. at least 40% by weight of pulp fibers; b. wherein a mean hand grip value for the gripping layer is at least 0.015 l/in2; 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. ### Claim 2 (depends on 1) The cleaning article of claim 1, wherein the cleaning composition further comprises an acid. ### Claim 3 (depends on 1) The cleaning article of claim 1, wherein the major face of the surface contact layer comprises a pattern. ### Claim 4 (depends on 1) The cleaning article according to claim 1 wherein the cleaning composition further comprises a chelating agent. ### Claim 5 (depends on 1) The cleaning article according to claim 1 wherein the cleaning composition comprises an alkyl polyglycoside surfactant. ### Claim 6 (depends on 1) The cleaning article according to claim 1 wherein the cleaning composition comprises 1% to 40% by weight of water. ### Claim 7 (depends on 1) The cleaning article according to claim 1 wherein one or more layers of the multilayer cleaning article are sonically bonded together. ### Claim 8 (depends on 1) The cleaning article according to claim 1 further comprising a loft layer adjacent to said barrier layer. ### Claim 9 (depends on 1) The cleaning article according to claim 1 wherein the thickness of all the layers of the multilayer cleaning article measured together is between about 2 mm and 6 mm. ### Claim 10 (depends on 1) The cleaning article according to claim 1 wherein the gripping layer has a mean coefficient of friction of at least 0.2. ### Claim 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: i. about 10% to about 90% by weight of surfactant; ii. about 0.01% to about 2% by weight of fragrance; and iii. an adjunct selected from the group consisting of: dyes, preservatives, solvents, humectants, pH adjusters, chelating agents, oxidizing agents, polymers and any combinations thereof; (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: a. at least 40% by weight of pulp fibers; b. wherein a mean hand grip value for gripping layer is at least 0.02 l/in2. ### Claim 12 (depends on 11) The cleaning article according to claim 11 wherein the cleaning composition comprises a sulfate surfactant. ### Claim 13 (depends on 11) The cleaning article according to claim 11 wherein the cleaning composition comprises an alkyl polyglycoside surfactant. ### Claim 14 (depends on 11) The cleaning article according to claim 11 wherein the cleaning composition comprises 1% to 40% by weight of water. ### Claim 15 (depends on 11) The cleaning article according to claim 11 wherein the cleaning composition comprises an acid. ### Claim 16 (depends on 11) The cleaning article according to claim 11 wherein the thickness of all the layers of the multilayer cleaning article measured together is between about 2 mm and 6 mm. ### Claim 17 (depends on 11) The cleaning article according to claim 11 wherein the gripping layer has a mean coefficient of friction of at least 0.2. ### Claim 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 the 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 dry even when the surface contact layer is wet; (c) optionally, a loft layer; and (d) a substantially dry gripping layer comprising: a. at least 40% by weight of pulp fibers; b. wherein a mean hand grip value for the gripping layer is at least 0.02 l/in2. ### Claim 19 (depends on 18) The cleaning article according to claim 18 wherein the thickness of all the layers of the multilayer cleaning article measured together is between about 2 mm and 6 mm. ### Claim 20 (depends on 18) The cleaning article according to claim 18 wherein the gripping layer has a mean coefficient of friction of at least 0.2.