US20100162508A1 - Flexible cleaning article - Google Patents

Flexible cleaning article Download PDF

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Publication number
US20100162508A1
US20100162508A1 US12/293,716 US29371607A US2010162508A1 US 20100162508 A1 US20100162508 A1 US 20100162508A1 US 29371607 A US29371607 A US 29371607A US 2010162508 A1 US2010162508 A1 US 2010162508A1
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US
United States
Prior art keywords
article
foam
mechanical fastener
cleaning
mechanical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/293,716
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English (en)
Inventor
Paula Olhe
Ana C. Barboza
Luis E.A. Langbeck
Patricia V. Guerreiro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Innovative Properties Co
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3M Innovative Properties Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Assigned to 3M INNOVATIVE PROPERTIES COMPANY reassignment 3M INNOVATIVE PROPERTIES COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GUERREIRO, PATRICIA V., OLHE, PAULA, BARBOZA, ANA C, LANGBECK, LUIS E.A.
Publication of US20100162508A1 publication Critical patent/US20100162508A1/en
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L17/00—Apparatus or implements used in manual washing or cleaning of crockery, table-ware, cooking-ware or the like
    • A47L17/04—Pan or pot cleaning utensils
    • A47L17/08—Pads; Balls of steel wool, wire, or plastic meshes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/16—Cloths; Pads; Sponges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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    • B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
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    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/42—Layered products comprising a layer of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/06—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions for securing layers together; for attaching the product to another member, e.g. to a support, or to another product, e.g. groove/tongue, interlocking
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form 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 ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form 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 ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
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    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
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    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/08—Interconnection of layers by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H13/00—Other non-woven fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
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    • B32B2432/00—Cleaning articles, e.g. mops or wipes

Definitions

  • the present invention refers to a flexible cleaning article. More specifically, the invention refers to a flexible sponge with a mechanical fastener system comprised of hook-like projections for attaching scouring webs.
  • the term “sponge” is commonly used to designate vegetable sponges or sponge-like articles which may optionally present a scouring web attached to one of its surfaces. Vegetable sponges are mainly used for personal care, and belong to the group of “Industrial Plants” of the Cucurbitaceae family, of the genus Luffa.
  • the scouring web is generally composed of fibers or filaments (polyamide, polyester, polypropylene, etc.), which undergo a setting step (e.g., mechanical setting, chemical setting or heat setting).
  • a setting step e.g., mechanical setting, chemical setting or heat setting.
  • Such filaments can be impregnated with minerals, resins or combinations thereof for the purpose of modifying the material's abrasive power.
  • the process for attaching the scouring web to one surface of the foam generally comprises a step of coating an adhesive layer or laminating a double-sided tape followed by pressing the scouring web against the foam in order to promote adhesion between the parts. Presses may be used.
  • adhesives for this application include but are not limited to hot-melt adhesives, UV-cured adhesives or even solventless adhesives.
  • the chemical composition of such adhesives can be selected, with no restrictions, from the group consisting of: acrylics, epoxies, polyurethanes, phenol-based resins, alkyd resins and vinyl acetates.
  • ⁇ utensils e.g., pans, dishes, glasses, knives, forks, spoons, etc.
  • metal filaments such as steel wools (available from Bombril Cirio S/A, S ⁇ o Paulo, Brazil under the tradename BOMBRILTTM; Prátika Industrial Ltda, Goiás, Brazil, under the tradename ASSOLANTM; and 3M Company, Minnesota, US, under the tradename SCOTCH BRITETM); sponges comprised of synthetic or naturally occurring foams, wherein a scouring web may optionally be attached to one surface of said foam (available from 3M Company, Minnesota, US under the tradename SCOTCH BRITE®) in different shapes (e.g., in “S” form or in “Nail-saver” form) and for specific purposes (e.g., non-scratch sponges for delicate surfaces, heavy-duty cleaning for dirt-encrusted surfaces, etc.), cleaning brushes and wipes.
  • steel wools available from Bombril Cirio
  • Variations of these articles include articles with plastic handles (such as polyethylene, polypropylene, polyester, polyurethane, thermoplastic rubber, etc.) having a cleaning article (i.e. brushes, sponges, and therelike) attached to one of the ends of said handle so as to avoid contact between the cleaning article and the user's hands.
  • plastic handles such as polyethylene, polypropylene, polyester, polyurethane, thermoplastic rubber, etc.
  • a cleaning article i.e. brushes, sponges, and therelike
  • Cleaning sponges can generally be found in the literature, for example, in BR Patent Application PI0404297-0 which relates to a process for making a cleaning sponge and the product obtained thereby, wherein said sponge is formed by weaving polyester yarns with two multifilament yarn fabric bases that are duly filled with and woven by monofilament yarns, thereby forming a fabric that after being opened in the middle forms two fabric parts or bases with bristles arranged in an orderly linear alignment, wherein control of abrasive power is provided by the thickness or gauge of the abrasive member-forming monofilament yarn.
  • a foam layer is applied to the bristled fabric base to finally achieve a high tear resistant fabric sponge, thereby preventing the bristles from falling out.
  • the linear order of the weaving step itself prevents debris retention, whereby adequate hygiene as well as long term abrasive power is achieved.
  • BR Patent Application PI0211615-4 refers to a sponge for cleaning comprising a scrubbing layer with a peripheral section along the edges; a drying layer with a peripheral section along the edges; and an absorbing core layer with a peripheral section along the edges, comprising an absorbing material selected from the group consisting of non-woven air-laid short fibers, non-woven plastic separator, cellulose fiber material, waxed paper, corrugated paper, fluff cellulose pulp, cotton balls, cotton separator or mixtures of these materials; wherein the absorbing core layer is found between the scrubbing layer and the absorbing core layer and the drying layer are fixed on the edge of each layer.
  • BR Patent Application PI0105018-4 refers to a domestic cleaning sponge, said sponge having a structural form comprising innovative material, which renders an improved performance in relation to the already known products.
  • This sponge is mainly applied for cleaning pans and Teflon®-coated utensils, due to composition that preserves said coating and at the same time easily removes any accretions from the surface.
  • This cleaning sponge is made from a polyethylene screen obtained by a continuous extrusion method of the type employed in the manufacture of fruit packages and the like. Said parts from the primary extraction process in tubular form emerge and the meshes formed provide good elasticity so that they can be repeatedly folded in order to achieve the desired shape of the sponge.
  • the developed product result in performance and durability characteristics superior to those of the already known systems, resulting in product suitable for non-stick utensils or enameled paint. It provides low abrasion thus preserving surfaces; and meshes facilitate the removal of accretions. Due to the fact that it is made from highly durable material, said sponge overcomes the traditionally used sponges.
  • US Patent Application 2003162684 refers to a process of cleaning dishware using an abrasive wipe. Said process comprises applying water to the wipe or to the dishware being cleaned, and further contacting the wipe with said dishware.
  • Said wipe is composed of a non-woven or paper cleaning substrate and another more abrasive substrate, such as fibers.
  • NL Patent 100239 describes a pan sponge having a shaft and holder for handling.
  • the flexible shaft ends in a holder, which has a contact surface at the bottom.
  • Said sponge is fixed to said contact surface by means of a double-side adhesive strip. Said sponge enables removal of food residues adhering to the bottom and sides of a pan.
  • Drawbacks generally related to use of steel wool reside in the fact that metal filaments get rusty over time, and have an unpleasant texture. Furthermore, filaments can loosen and pierce the user's hands. Brushes may not offer the abrasive power needed for dishware cleaning. Furthermore the currently available sponges present drawbacks related to the need to change the cleaning article depending on the substrate to be cleaned. Surfaces that are coated with PTFE (polytetrafluoroethylene) or other polymers or ceramics are, in general, more sensitive to the abrasive material found in some sponges and, consequently, can be damaged (i.e. scratched).
  • PTFE polytetrafluoroethylene
  • cleaning articles such as cleaning wipes or specific sponges, for example, available from 3M Company, Minnesota, US, under the tradename NON-STICK SCOTCH BRITETM, that has a special talc-similar texture mineral used in its manufacturing process, i.e., said mineral does not scratch delicate surfaces.
  • Scouring webs employed in heavy duty cleaning may wear more quickly than the foam article, or vice-versa. Not only does the present invention enable the soiled web to be replaced with a new one, but it also allows replacement of a heavy duty scouring web by another one, such as, for example, non-scratch web for delicate substrates and metal filaments for polishing surfaces, wherein the same foam is maintained.
  • the present invention refers to a flexible and permeable cleaning article; more specifically to a flexible sponge with a mechanical fastener system comprised of hook-like projections for fixing scouring webs.
  • Such materials can be replaced in accordance with the type of cleaning to be carried out, as for example, heavy duty cleaning, light cleaning, surface polishing, etc.
  • the flexibility provided by the object of the present invention is important as the article adapts more easily to substrates and features thereof, such as corners and grooves. This renders the cleaning process easier and more efficient. Permeability is important in order to allow water and chemical compositions (e.g., detergents, soaps, etc.) to pass through it, whereby suds are formed.
  • the article in question can be replaced in accordance with the type of cleaning being effected. This eliminates the need of having different cleaning articles for different substrates (e.g. dishware and surfaces), on the kitchen sink.
  • FIGS. 1 to 13 illustrate exemplary embodiments of the object of the present invention.
  • FIG. 1 illustrates the side view of an exemplary embodiment of the cleaning article of the present invention
  • FIG. 2 illustrates the side view of an exemplary embodiment of the hook-like projections for fixing the scouring web to the foam of the article object of the present invention
  • FIG. 3 illustrates the side view of different hook-like shapes that can be used in the mechanical fastener
  • FIG. 4 illustrates the front view of an exemplary embodiment of the cleaning article of the present invention, presenting the mechanical fastener adhered to the foam of the article following a reverse V-shape pattern.
  • FIG. 5 illustrates the frontal view of an exemplary embodiment of the cleaning article which is the object of the present invention comprising a mechanical fastener attached to one surface of the foam of said article following a reverse W-shape pattern.
  • FIG. 6 illustrates the frontal view of an exemplary embodiment of the cleaning article comprising the mechanical fastener attached to one surface of the foam of said article following a pattern in curved S-shaped lines.
  • FIG. 7 illustrates the frontal view of an exemplary embodiment of the cleaning article comprising the mechanical fastener attached to one surface of the foam of said article in the form of strips arranged perpendicular to the longest dimension of the article (horizontally).
  • FIG. 8 illustrates the frontal view of an exemplary embodiment of the cleaning article which is the object of the present invention comprising a mechanical fastener attached to one surface of the foam of said article in the form of strips arranged perpendicular to the longest dimension of the article, lengthways (vertically).
  • FIG. 9 illustrates the frontal view of an exemplary embodiment of the cleaning article which is the object of the present invention comprising a mechanical fastener attached to one surface of the foam of said article in the form of strips arranged to form an angle with one of the sides of the article (inclined).
  • FIG. 10 illustrates the frontal view of an exemplary embodiment of the cleaning article which is the object of the present invention comprising a mechanical fastener with perforations and attached to one surface of the foam of said article.
  • FIG. 11 illustrates the frontal view of an exemplary embodiment of the cleaning article which is the object of the present invention comprising a mechanical fastener with perforations attached to one surface of the foam of said article.
  • FIG. 12 illustrates the frontal view of an exemplary embodiment of the cleaning article which is the object of the present invention comprising a mechanical fastener attached to one surface of the foam of said article in the form of a specific ornamental pattern.
  • FIG. 13 illustrates the frontal view of an exemplary embodiment of the cleaning article which is the object of the present invention comprising a mechanical fastener attached to one surface of the foam of said article in the form of circles.
  • Article 1 of the present invention is basically comprised of two elements: foam 4 and a scouring web 2 said foam 4 is defined as gas filled cellular materials, which exhibit mechanical properties (i.e. flexibility) that are adequate to the application.
  • Attached to one surface of said foam 4 are mechanical fasteners comprised of hook-like projections 3 (such as the mechanical closure system available from Velcro Industries B.V., West Indies, under the tradename VELCROTM; and Tecelagens Lady Ltda, S ⁇ o Paulo, Brazil, under the tradename VELOKTM), through which the second characteristic member of the article of the present invention, i.e., the scouring web 2 , is engaged to the foam 4 .
  • hook-like projections 3 such as the mechanical closure system available from Velcro Industries B.V., West Indies, under the tradename VELCROTM; and Tecelagens Lady Ltda, S ⁇ o Paulo, Brazil, under the tradename VELOKTM
  • Said scouring web 2 can be an abrasive web for heavy duty cleaning (where it may contain abrasive particles, such as minerals and resins impregnated in their structure); a less aggressive surface (for delicate surface cleaning, where it may contain fine minerals); or surfaces composed of polished metal fibers, such as steel wools.
  • abrasive web for heavy duty cleaning where it may contain abrasive particles, such as minerals and resins impregnated in their structure
  • a less aggressive surface for delicate surface cleaning, where it may contain fine minerals
  • surfaces composed of polished metal fibers, such as steel wools such as steel wools.
  • Such cellular materials 4 may include foams (e.g. closed cell foams, open cell foams), bonded fiber structures (e.g. described in U.S. Pat. No. 5,841,081), aerogels, hollow ceramic particles in a matrix of synthetic resin binder, multiple layered materials and combinations thereof.
  • the foams may be composed polyurethane, polyester, polyethylene, PVC and other suitable polymers.
  • Said mechanical fastener 3 used in the present invention presents slight protuberances hereon referred to as hooks or hook-like projections 5 .
  • Said hook 5 is an example of the male component or fasteners of the touch-and-close type, also known as hook-and-loop type fasteners.
  • a backing 6 is located on the surface opposite to the hooks 5 and may be formed from a continuous substrate, or may present perforations, and is generally composed of the same material as that of the hook 5 .
  • Said material can be obtained by textile processing (similar to manufacturing of toweling for bath towels); micro replication; or continuous injection process, and is, in general, composed of polymers such as polypropylene, polyethylene, PVC, and polyamide.
  • Another embodiment of this system comprises a surface composed of said hooks 5 and another surface adhering thereto, which consists of a layer of non-woven loops (hook and loop) or another hook layer, wherein the hooks fit together when arranged one against another.
  • the word “loop” includes low lying, free sections of fabric filaments, such as those of a thin nonwoven fabric, capable of mechanically engaging with a male fastener component, the usage of the word being in accordance with its current general use in the art of separable fasteners.
  • Water-permeability of the backing 6 of said mechanical fastener 3 is an important property as it allows water and detergent to pass from the scouring web 2 to the foam 4 , thereby forming soapsuds during use. Formation of soapsuds (detergents, soap bars, etc.) is an important characteristic for users.
  • the backing 6 may optionally be perforated.
  • the mechanical fastener comprised of hook-like projections 3 is used to attach the scouring web 2 to said foam 4 , thus maintaining them together upon use. Where necessary said mechanical system 3 can be easily separated from the scouring web 2 , for replacement thereof.
  • the construction of said scouring webs 2 determine the type of hook 5 that should be used as other examples include cap molded stems on webs such as mushroom-shaped engaging projections. Other possible shapes include reverse L-shape 5 a , reverse J-shape 5 b and T-shape 5 c and inter alia ( 5 d ; 5 c ).
  • the high permeability to soapsuds of cleaning article 1 may arise from the exposed portions of the surface of foam 4 .
  • Adhesion of the mechanical fastener 3 to the foam 4 can be achieved by means of chemical adhesives, double-side adhesive tapes or physical means.
  • Commonly used adhesives for this application include hot-melt adhesives; solvent-based adhesives; water-based adhesives; UV-curing adhesives or electron-beam cured adhesives; or solventless adhesives as well.
  • Chemical compositions of said adhesives include but are not restricted to: acrylics, epoxies, polyurethanes, polyesters, phenol-based resins, alkyd resins, vinyl acetates.
  • Physical means can comprise, for example, flame-mechanical fastener that consists of surface-flame melting of said foam 4 , followed by coupling said mechanical fastener 3 and subsequent bonding of the parts upon cooling of the material.
  • Said mechanical fastener 3 can be arranged in said foam 4 in different ways, such as reverse V-shape 7 , reverse W-shape 8 , strips having a curvilinear format “S” 9 (continuous waves, spirals, etc.), strips the direction of which matches the largest dimension of said article 11 (vertical); strips the length of which is perpendicular to the direction of the largest dimension of said article 10 (horizontal); strips forming an angle with one side of said article 12 (inclined), with the backing 6 of the referred to mechanical fastener 3 perforated 13 , 14 or other discrete forms applied to the foam, such as circles 16 ; waves; or more specific patterns ( 15 ) (e.g., logotype and trademark) having different spacing and widths.
  • S curvilinear format
  • One of the processes used for manufacturing the cleaning article of the present invention in which said mechanical fastener 3 is disposed in such a manner that there are exposed portions of said foam 4 as illustrated in FIG. 4 , comprises using an adhesive or adhesive tape having greater adhesion to the backing 6 of the mechanical fastener 3 than with said foam 4 ; and perforating the backing 6 of said mechanical fastener 3 in order to create fragility points.
  • Higher compatibility of the adhesive with the backing 6 than with said foam 4 is required so that the detachment and removal of the unwanted part (weed) of the layer of mechanical fasteners 3 occur without removal of the hook 5 and backing 6 from the foam.
  • the weeding of unwanted parts of the mechanical fastener 3 is made possible due to the existence of fragility points created by the perforations.
  • Another process involves applying adhesive or a double-sided adhesive tape to the backing 6 of the mechanical fastener 3 .
  • a protective film (liner) is then laminated onto the adhesive layer of the mechanical fastener 3 , followed by perforation of said fastener 3 .
  • the protective film is removed upon application of the fastener 3 to the foam 4 and the subsequent step comprises striping the weed, after which, only part of the mechanical fastener 3 laminated to the foam 4 is left.
  • the protective film can be made from plastic films such as polypropylene, polyethylene, polyester, etc.
  • it can be subjected to anti-adhesive treatment using conventional silicones (available from Dow CorningTM, GETM, RhodiaTM, WackerTM), urea, acrylic monomers, wax and its derivatives, or mixtures thereof.
  • Another embodiment of this method includes laminating loops onto the scouring web 2 , which, when in contact with the hook-like projections 5 of the mechanical fastener 3 attached to the foam 4 , form the fastening system.
  • Samples manufactured and described in the examples below were produced using the vertical ornamental pattern 11 . These examples seek only to illustrate the relationship between the force of resistance to deflection of the article and the area of coverage of the foam 4 by the mechanical fastener 3 and are not intended to limit the scope of the invention. Samples obtained through examples 1-7 were tested on the “Bending Resistance Testing” equipment of the Messner-Buchel Company which measures transverse deflection force of a determined test body. This force, when in static equilibrium, possesses the same module and orientation but the opposite direction to the resistance force (to deflection) effected by the test body. The resistance force is inversely proportionate to the flexibility of the article, which is to say, the greater the force necessary to cause deflection, the more rigid the material tested.
  • the angle of deflection used was 60°, the distance 5 mm and the unit of measurement was mN.
  • Some parameters were established for the realization of the tests, such as the thickness of the foam used (8 mm) and the pattern of the mechanical fastener 3 attached to the test bodies.
  • the vertical pattern was chosen 11 due to the fact that the other patterns (such as the horizontal 10 ) the point of deflection (wherein the “bending” of the test body occurs) could be located between strips of the mechanical fastener 3 , measuring only the force necessary to bend the foam 4 .
  • the sample is placed on the equipment with its length horizontal to the equipment, the test measuring the transverse deflection of the sample (along the “length” of the test body).
  • a hook-like mechanical system 3 composed of approximately 0.25 mm diameter interwoven polyamide filaments (available from Tecelagem Lady Ltda, S ⁇ o Paulo, Brazil, under the tradename VELOKTM) was cut into strips of about 2 mm thick, about 4 mm wide and about 110 mm in length.
  • a hook-type mechanical system composed of approximately 0.25 mm diameter interwoven polyamide filaments (available from Tecelagem Lady Ltda., S ⁇ o Paulo, Brazil, under the tradename VELOKTM) was cut into strips of about 2 mm thick, about 7 mm wide and about 110 mm in length.
  • a polyurethane foam 4 available from Aunde Coplatex do Brasil S/A, Sao Paulo, Brazil and from Soft-Spuma Ind ⁇ stria e Comércio Ltda., Sao Paulo, Brazil
  • a polyurethane adhesive available from Ariston Polimeros Ind ⁇ stria e Comércio Ltda., Sao Paulo, Brazil, under the tradename RESITHANE SL 3000
  • a hook-type mechanical system composed of approximately 0.25 mm diameter interwoven polyamide filaments (available from Tecelagem Lady Ltda., S ⁇ o Paulo, Brazil, under the tradename VELOKTM) was cut into strips of about 2 mm thick, about 10 mm wide and about 110 mm in length.
  • a polyurethane foam 4 available from Aunde Coplatex do Brasil S/A, Sao Paulo, Brazil and from Soft-Spuma Ind ⁇ stria e Comércio Ltda., S ⁇ o Paulo, Brazil
  • a bi-component polyurethane adhesive available from Ariston Polimeros Ind ⁇ stria e Comércio Ltda, S ⁇ o Paulo, SP, Brasil, under the tradename RESITHANE 9020; available from Reichold under the tradename RESADUR 19-401 vertically disposed along the flexible article's ( 5 b ) length. Approximately 9 mm spacing between the strips was maintained. Samples were pressed to promote adhesion and the adhesive was allowed to set for 24 hours. Area of foam covered by the mechanical system was of about 53%.
  • a hook-like mechanical system composed of approximately 0.25 mm diameter interwoven polyamide filaments (available from Tecclagem Lady Ltda., S ⁇ o Paulo, Brazil, under the tradename VELOKTM) was cut into strips of about 2 mm thick, about 75 mm wide and about 110 mm in length.
  • a hook-type mechanical system composed of approximately 0.25 mm diameter interwoven polyamide filaments (available from Tecclagem Lady Ltda., S ⁇ o Paulo, Brazil, under the tradename VELOKTM) was cut into strips of approximately 2 mm thick, approximately 2.5 mm wide and approximately 110 mm in length.
  • a polyurethane foam 4 available from Aunde Coplatex do Brasil S/A, Sao Paulo, Brazil and from Soft-Spuma Ind ⁇ stria e Comércio Ltda., Sao Paulo, Brazil
  • a polyurethane adhesive available from Huntsman ICI Chemicals, LLC, of Utah, US, under the tradename RUBINATETM 9272 MDI
  • a spacing of approximately 22.5 mm was maintained between the strips.
  • the samples were pressed to promote adhesion and left for 24 hours so that the adhesive could set.
  • the foam 4 area covered by mechanical system 3 was of about 10%.
  • a hook-type mechanical system composed of approximately 0.25 mm diameter interwoven polyamide filaments (available from Tecelagem Lady Ltda., S ⁇ o Paulo, Brazil, under the tradename VELOKTM) was cut into strips of approximately 2 mm thick, approximately 8.5 mm wide and approximately 110 mm in length.
  • a polyurethane foam 4 available from Aunde Coplatex do Brasil S/A, Sao Paulo, Brazil and from Soft-Spuma Ind ⁇ stria e Comércio Ltda., Sao Paulo, Brazil
  • a polyurethane adhesive available from Ariston Polimeros Ind ⁇ stria e Comé ⁇ cio Ltda, of Sao Paulo, Brazil, under the tradename RESITHANE SL 300
  • a spacing of approximately 10 mm was maintained between the strips.
  • the samples were pressed to promote adhesion and left for 24 hours so that the adhesive could set.
  • the foam 4 area covered by the mechanical system 3 was of about 45%.
  • a hook-type mechanical system composed of approximately 0.25 mm diameter interwoven polyamide filaments (available from Tecelagem Lady Ltda., S ⁇ o Paulo, Brazil, under the tradename VELOKTM) was cut into strips of approximately 2 mm thick, approximately 10.5 mm wide and approximately 110 mm in length.
  • a polyurethane foam 4 available from Aunde Coplatex do Brasil S/A, Sao Paulo, Brazil and from Soft-Spuma Ind ⁇ stria e Comércio Ltda., Sao Paulo, Brazil
  • a polyurethane bi-component adhesive available under the tradename RESITHANE 9020 by Ariston Polimeros Ind ⁇ stria e Comércio Ltda, of Sao Paulo, Brazil and RESADUR 19-401 from Reichold do Brasil Ltda. of S ⁇ o Paulo, Brazil
  • a spacing of approximately 4.5 mm was maintained between the strips.
  • the samples were pressed to promote adhesion and left for 24 hours so that the adhesive could set.
  • the foam 4 area covered by the mechanical system 3 was of about 70%.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
US12/293,716 2006-04-05 2007-03-26 Flexible cleaning article Abandoned US20100162508A1 (en)

Applications Claiming Priority (3)

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BRPI06013430 2006-04-05
BRPI0601343-0A BRPI0601343A (pt) 2006-04-05 2006-04-05 artigo flexìvel para limpeza
PCT/US2007/064871 WO2007117966A1 (fr) 2006-04-05 2007-03-26 Objet nettoyant souple

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US20100162508A1 true US20100162508A1 (en) 2010-07-01

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US (1) US20100162508A1 (fr)
EP (1) EP2010036A4 (fr)
BR (1) BRPI0601343A (fr)
MX (1) MX2008012563A (fr)
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Also Published As

Publication number Publication date
MX2008012563A (es) 2008-10-10
WO2007117966A1 (fr) 2007-10-18
EP2010036A1 (fr) 2009-01-07
EP2010036A4 (fr) 2010-05-26
BRPI0601343A (pt) 2007-12-04

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