JP2008505734A - Cleaning tool comprising a layer of melamine foam - Google Patents

Abstract

The present invention comprises a wash comprising a layer of melamine foam (2) having a thickness of at least 15 mm and a second foam (3) layer having a water absorption capacity of at least 0.35 g per cm ³ It relates to the tool (1).

Description

  The present invention relates to a cleaning tool comprising a melamine foam layer and a second foam layer.

  Melamine formaldehyde resin foams, also referred to herein as melamine foams, are used, for example, in industrial applications as heat and sound insulation materials and for fire protection purposes and are well known in the art. In fact, in the automotive industry, melamine foam is commonly used to separate motor and truck motor compartments and cabs.

  In recent years, new uses of such melamine foams have been found in the field of painted surface cleaning. In fact, tiles, walls, floors, sanitary wares (sinks, showers, shower curtains, basins, toilets, etc.), household appliances (refrigerators, freezers, washing machines, automatic dryers, ovens, microwave ovens, dishwashers In order to remove dirt and / or stains (ie, to clean the painted surface) from the painted surface, such as, but not limited to, melamine foam cut or molded piece cleaning tools are generally It has become. In practice, melamine foam sponges are currently marketed under the trade name Mr. Clean Magic Eraser®. In order to stabilize the melamine foam and prevent premature collapse, a sponge combining melamine foam with a stabilizing material such as rigid polyurethane has been proposed and is commercially available (3M Corp., Scotch Brite Easy Erasing Pad (sold under the trade name of Scotch Brite Easy Erasing Pad)). Melamine foam pieces combined with or laminated to a second material are known in the art, for example, from US Patent Publication No. 2001/0024720 or Japanese Patent Publication No. 2001-258809. .

  Melamine foam has been observed to exhibit excellent soil and / or stain removal performance when used to clean painted surfaces. In practice, when the melamine foam is moistened with a suitable solvent such as tap water, contacting the painted surface with the moistened melamine foam may remove dirt and / or stains from the painted surface. Has been observed. By “contacting” is meant wiping, wiping, rubbing, and the like. In order for the melamine foam to optimally remove dirt and / or stains from the painted surface, a sufficient amount of a suitable solvent such as tap water must be used. Most commonly, tap water is used by melamine foam users to remove dirt and / or stains from the painted surface. When used with water or any other suitable solvent, the melamine foam will look like small particles (ie, the foam will break apart) upon contact with the painted surface. In practice, a milky white suspension of small melamine foam particles is formed in water.

  According to consumer research, melamine foam users seek a means to absorb the excess amount of water used and the milky white suspension of small melamine foam particles in the water when removing dirt and / or stains from the painted surface. It has been found that Although the melamine foam itself can absorb water and / or milk white melamine suspension in water, the user considers the absorption of water and / or milk white melamine suspension by water to be insufficient. ing. The same applies to sponges that are currently on the market that combine melamine foam and stabilizing material, and the stabilizing material contained in it alone or in combination with melamine foam is sufficient. Inability to absorb melamine suspension in water and / or milky white. In addition, for melamine foam users, when removing dirt and / or stains from the painted surface, in order to absorb the excess amount of water used and the melamine suspension in the milk white formed, Thus, it is inconvenient to use a separate absorbent article, such as an absorbent paper towel, sponge, or cloth.

  Accordingly, it is an object of the present invention to provide a cleaning tool based on melamine foam that includes an excess of water (or another suitable solvent) used, as well as milky white melamine suspension generated during use. It is to provide such a cleaning tool that can absorb turbidity (ie, milky suspension of small melamine foam particles in water (solvent)).

The above objective can be met by a cleaning tool comprising a layer of melamine foam having a thickness of at least 15 mm and a second foam layer having a water absorption capacity of at least 0.35 g / cm ^3. But now it turns out.

  Advantageously, because the layer of melamine foam in the cleaning tool of the present invention has a thickness of at least 15 mm, the amount of melamine foam provided is an acceptable number of cleaning operations (i.e. painted surfaces). Removal of stains and / or stains from).

  Another advantage of the cleaning implement herein is that the second foam not only absorbs the excess water used as well as the melamine suspension in the milk white, but also provides the stability of the cleaning implement. is there. In practice, unstabilized melamine foam is relatively fragile and can be unevenly pressured by the user when in contact with the painted surface to be cleaned, thus causing dirt and / or stains from the painted surface. It has been found that when used to remove water, it tends to break or break.

The present invention includes a cleaning implement comprising a melamine foam layer having a thickness of at least 15 mm and a second foam layer having a water absorption capacity of at least 0.35 g / cm ³ .

  The present invention also includes a cleaning implement comprising a layer of melamine foam having a thickness of at least 15 mm and a second foam layer, the two layers being interconnected by foam frame lamination. To do.

  The present invention further relates to a method for cleaning a painted surface by bringing the cleaning tool according to the present invention into contact with the painted surface, and preferably the cleaning tool is brought into contact with the painted surface before the cleaning tool is brought into contact with the painted surface. Includes cleaning methods moistened with a suitable solvent (tap water).

DESCRIPTION OF SYMBOLS 1: Cleaning tool 2: Melamine foam layer 3: Second foam layer having a water absorption capacity of at least 0.35 g / cm ³ 4: Separation of the melamine foam layer and the second foam Line 5 showing: Mr. Clean (registered trademark) head logo

Cleaning tool The cleaning tool (1) herein comprises at least two separate layers. A first layer of melamine foam (2) having a thickness of at least 15 mm and a second layer of second foam (3) having a water absorption capacity of at least 0.35 g / cm ³ .

  By “cleaning tool” is meant herein any product of any suitable shape and / or size and / or volume that is suitable for cleaning, ie, removing dirt and / or stains from the painted surface. In a highly suitable embodiment according to the present invention, the cleaning implement herein is of a shape and / or size and / or volume suitable for use by a consumer to clean a painted surface.

  The layers of melamine foam and second foam may be configured on the cleaning tool in any suitable manner. In a preferred embodiment, the melamine foam and second foam layers are configured parallel to at least one side of the cleaning implement, preferably two opposing sides. However, the cleaning implement may also have an irregular shape. In practice, the layer thickness may be constant or may vary throughout the cleaning tool. The separation line (4) between the two layers may form a straight line, may form a bend, or may be completely irregular. In addition, the separation surface of the two layers may be in the center of the cleaning tool, dividing the tool into two equal parts, or may be in the upper or lower part of the tool. In addition, the cleaning tool may be in the shape of a sphere, or a small sphere, or an ellipsoid, and the separation surface of the layer forms a spherical segment or one of the layers, preferably here The second foam layer forms a sphere in the sphere (similar to the onion layer).

  Suitable shapes for the cleaning tool herein are cubic, rectangular, pyramidal, cylindrical, conical, pencil eraser, pseudo-cubic, tetrahedral, spherical, small spherical, and ellipsoidal May be selected from the group consisting of Preferably, the cleaning tool has a shape selected from the group consisting of a cubic shape, a rectangular shape, a pencil eraser shape, and a pseudo cubic shape.

Volume suitable for cleaning implement herein, 1 cm ³ of 10.000cm ^3, preferably 1.000Cm ³ from 10 cm ^3, may range more preferably from 150 cm ³ of 250 cm ^3.

  In one highly preferred embodiment herein, the cleaning implement (1) herein has a pseudo-cubic shape defined by three groups of parallel and equally long sides, a, b, and c. A is in the range of 2 cm to 20 cm, preferably 4 cm to 8 cm, b is in the range of 2 cm to 20 cm, preferably 8 cm to 15 cm, and c is 1.5 cm to 5 cm, preferably 2 cm. To 4 cm. The cleaning tool (1) herein has a pseudo-cubic shape. In this highly preferred embodiment, the line (4) indicating the separation of the two layers of the tool (or the surface area to which the two layers are joined) is It is preferably substantially parallel (preferably parallel) to the side having the maximum surface area of the pseudo-cubic tool (see FIGS. 1 to 5).

  In another highly preferred embodiment herein, the cleaning implement herein is in the form of a pencil eraser. According to the “pencil eraser shape”, in this specification, there are six wall surfaces, there are three pairs of parallel and uniform shapes and sizes, and the pair of wall surfaces are parallelogram shapes, It means a bulky object in which the remaining two pairs of wall surfaces are rectangular. In this preferred embodiment where the cleaning tool herein has a pencil eraser shape, the line indicating the separation of the two layers of the tool (or the surface area to which the two layers are joined) is the maximum of the pencil eraser shaped tool. It is preferably substantially parallel (preferably parallel) to the side surface having the surface area.

In order to obtain a suitable cleaning tool according to the invention, the melamine foam layer and the second layer of the second foam having a water absorption capacity of at least 0.35 g / cm ³ must be bonded to one another. . This bonding can be achieved by any bonding means suitable for bonding the two layers. The bond can be a permanent bond (the two layers cannot be separated without substantial damage to the layers) or a temporary bond (the two layers can be separated without substantial damage to the layers). It may be any one of (good). Suitable bonding means for providing a permanent bond are selected from the group consisting of a foam frame that laminates two layers, the use of permanent adhesive, two layers of stitching, two layers of needle punching, and combinations thereof Is done. Suitable bonding means for providing a temporary bond are selected from the group consisting of fragile adhesives, velcro, and moisture-based water-soluble coatings or adhesives, and combinations thereof.

  In one preferred embodiment herein, the bonding of the layers herein is a permanent bond. More preferably, the layers are joined together by foam frame lamination.

  Foam frame lamination is a continuous process in which the foam and additional material, if any, can be bonded in one pass to one or both sides of the foam. The process of flame lamination involves the first foam (either the melamine foam herein or the second foam herein) being passed over an open flame to melt the foam / polymer. With the step of making a thin layer. The second foam (either the second foam herein or the melamine foam herein, depending on the first step) is the first foam while the first foam is still in the molten state. Pressed against the foam. The foam and additional material, if any, can be bonded in one pass to one or both sides of the foam. Furthermore, the additional path is optional. The strength of the anchorage depends on the foam selected and the additional material, if any, and the processing conditions (ie, gas type, frame height and spread, foam disappearance thickness and nip pressure).

In practice, a cleaning implement according to the present specification, wherein a melamine foam layer and a second foam layer having a water absorption capacity of at least 0.35 g / cm ³ are joined by foam frame lamination, Compared to the use of adhesive, it has been found that there is no hard bond line due to the adhesive at the interface of the two layers. Furthermore, the cleaning tool is free of additional chemicals (such as adhesives) that may redeposit on the painted surface to be cleaned when the melamine foam layer is worn away.

  In view of these, the present invention further comprises, as independent embodiments, a layer of melamine foam (2) having a thickness of at least 15 mm and a layer of second foam (2). It includes a cleaning tool (1) in which the layers are joined together by foam frame lamination.

  The cleaning implement according to the present invention comprises at least two separate layers as described herein. The cleaning tool may include more than one layer, and if there is the additional layer, the layer may be of the same or similar material as the melamine foam or the second foam, Alternatively, it may be made of another material having similar or different properties than the second foam. In practice, the cleaning implement herein may be of a so-called sandwich configuration in which there are three layers. In a preferred embodiment where the cleaning implement herein is of a sandwich configuration, the intermediate layer may be the second foam and at least one of the two outer layers is a melamine foam, The two outer layers are melamine foam or another material that provides other features such as wear or increased stiffness.

  The layers of the cleaning implement according to the invention may partially or totally cover each other. By “partially covering”, at least one of the layers overlies the other layer (or a plurality of other layers, if any) and the other layer (or a plurality of other layers, if any) Means that it is not entirely covered by layer). By “overall”, the layers of the cleaning tool generally cover each other and there is no layer substantially overlying the other layer (or multiple other layers, if any) Means that.

  The ratio of the melamine foam to the second foam of the cleaning implement according to the present specification is preferably 20: 1 to 1:20 by volume, more preferably 10: 1 to 1:10, more preferably by volume. Preferably in the range of 5: 1 to 1: 1, even more preferably 5: 1 to 2: 1, most preferably 4: 1 to 3: 1 on a volume basis.

  In order to obtain a suitable cleaning implement according to the present invention, the raw materials of the melamine foam and the second foam may have to be changed in shape and / or size. This modification can be done by any means known to those skilled in the art. Suitable means for changing the shape and / or size of the raw materials of the melamine foam and the second foam may be selected from the group consisting of compression, thermal compression, cutting, breaking, and tearing, and combinations thereof .

  The cleaning tool herein may be modified or post-processed. Specifically, such modifications and / or post treatments of the cleaning tool may be used to associate a paint surface cleaner trade name and / or logo with the cleaning tool. Suitable modifications and / or post-treatments of the cleaning tool include printing on one or more sides of the cleaning tool and / or one or more sides of the cleaning tool using heat and / or pressure. It may be an embossing up as well as a combination thereof. A cleaning tool modified to associate a paint surface cleaner logo (Mr. Clean® head logo) with the cleaning tool is shown in FIG. The logo (Mr. Clean® head logo (5)) is embossed or printed on the second foam.

Melamine foam The cleaning tool (1) herein comprises a layer of melamine foam (2) having a thickness of at least 15 mm.

  “Melamine foam” as used herein means a melamine formaldehyde resin foam. “Thickness” as used herein means the length in mm (height of the melamine foam layer) of the side having the shortest extension compared to the other sides of the melamine foam layer. If the cleaning tool is based on a rectangular shape and the melamine foam layer extends parallel to the side with the maximum surface area of the shape (extension in the x-axis and y-axis), the thickness extends in the y-axis direction. It can be called. Melamine foam at least once if the cleaning tool is based on an irregular shape and / or the thickness extension of the melamine foam layer changes (ie the layer is thicker in some parts of the tool compared to others) It is sufficient that the thickness of the body layer extends beyond the thickness required herein.

  The thickness of the melamine foam layer herein is at least 15 mm, preferably from 15 mm to 100 mm, more preferably from 17 mm to 50 mm, even more preferably from 20 mm to 40 mm, most preferably from 21 mm to 25 mm.

The total volume of the layer of melamine foam in the cleaning tool herein is preferably from 50 cm ³ to 400 cm ³ , more preferably from 80 cm ³ to 300 cm ³ , even more preferably from 150 cm ³ to 275 cm ³ , most preferably from 200 cm ^3. The range is 250 cm ³ .

  A suitable melamine formaldehyde resin foam raw material is commercially available from BASF under the trademark Basotect®.

  The “melamine foam” described above is a blend of the main starting materials of melamine and formaldehyde or precursors thereof with a blowing agent, a catalyst, and an emulsifier, and the resulting mixture is injected into a mold and heated or subjected to electromagnetic waves. It can be made by generating heat in the reaction mixture via suitable means such as irradiation, causing foaming and curing. The molar ratio of melamine to formaldehyde for making the precursor (ie melamine to formaldehyde) is preferably in the range of 1: 1.5 to 1.4, particularly preferably 1: 2 to 1 for melamine to formaldehyde. : It is the range of 3.5. In addition, the number average molecular weight of the precursor is preferably in the range from 200 to 1,000, particularly preferably from 200 to 400. Furthermore, formalin which is an aqueous solution of formaldehyde is usually used as formaldehyde.

  As monomers for making the precursor, the following various monomers are used in an amount of 50 parts by weight (hereinafter referred to as “parts”) or less, particularly 20 parts or less, with respect to 100 parts by weight of melamine and formaldehyde. It may be used in addition to melamine and formaldehyde. Other monomers corresponding to melamine include C1-5 alkyl substituted melamines such as methylol melamine, methylmethylol melamine, and methylbutyrol melamine, urea, urethane, carbonic acid amides, dicyandiamide, guanidine, sulfurylamides, sulfonic acid amides , Aliphatic amines, phenols, and derivatives thereof may be used. As the aldehyde, acetaldehyde, trimethylolacetaldehyde, acrolein, benzaldehyde, furfurol, glyoxal, phthalaldehyde, terephthalaldehyde, or the like may be used.

  As the blowing agent, pentane, trichlorofluoromethane, trichlorotrifluoroethane, or the like may be used. However, use of so-called fleons (registered trademark) such as trichlorofluoromethane is not preferable because it is regulated from the viewpoint of environmental problems. On the other hand, pentane is preferred because it easily provides foam even when used in small amounts, but it is volatile and flammable and requires careful handling. Furthermore, formic acid is generally used as the catalyst, and an anionic surfactant such as sodium sulfonate may be used as the emulsifier.

  The amount of electromagnetic radiation irradiated to promote the curing reaction of the reaction mixture is preferably consumed in the range of 500 to 1,000 kW, preferably 600 to 800 kW, based on 1 kg of aqueous formaldehyde solution charged in the mold. Adjusted to power. If this power consumption is insufficient, foaming will be insufficient and a cured product having a high density will be produced. On the other hand, if the power consumption is excessive, the pressure in foaming becomes very high, which can cause the mold to become extremely fatigued and even explode. Therefore, power consumption outside the range is not preferable.

Second Foam The cleaning tool (1) herein also includes a layer of second foam (3) having a water absorption capacity of at least 0.35 g / cm ³ .

Preferably, the second foam is at least 0.4 g, more preferably at least 0.45 g, more preferably at least 0.5 g, even more preferably at least 0.55 g per cm ^{3 of} the second foam. Most preferably has a water absorption capacity of at least 0.575 g.

  The total water absorption capacity of the second foam layer is preferably at least 10 g, preferably at least 11 g, more preferably at least 13 g, and most preferably at least 15 g.

  Any foam material suitable to provide the moisture absorption required herein may be used as the second foam.

  The second foam suitable for use herein has the required water absorption and is polyurethane foam, polypropylene foam, polyethylene foam, cellulose foam sponge, natural sponge, open cell Selected from the group of foams consisting of polyester foam, cross-linked polyethylene foam, and combinations thereof.

In a preferred embodiment herein, the second foam is a polyurethane foam having a water absorption capacity of at least 0.35 g / cm ³ . Polyurethane foams are generally made by the reaction of an active hydrogen-containing compound (ie, a polyol) with a polyisocyanate in the presence of a blowing agent such as water, and usually a reaction catalyst and a foam stabilizer.

  In one highly preferred embodiment herein, the second foam is a hydrophilic ester polyurethane foam. A suitable hydrophilic ester polyurethane foam is the trade name Cellulex® under the trade name Formex L. P. (Foamex L.P.). Hydrophilic ester polyurethane foams and their preparation are described in US Pat. No. 6,756,416. Such hydrophilic ester polyurethane foams do not swell appreciably when absorbing and retaining liquids. By “hydrophilic ester polyurethane foam” is meant an ester polyurethane foam capable of absorbing a sufficient amount of liquid such as water.

The preparation of the hydrophilic ester polyurethane foam described in US Pat. No. 6,756,416 is by the following steps. a) A polyurethane foam is formed by mixing the following components. 100 parts by weight of an ester polyol, 100 parts by weight of an isocyanate in the range of 20.0 to 62.0 parts by weight of isocyanate, provided that the isocyanate index is 110 or less, and 1.0 part by weight of polyol to 100 parts by weight And b) treating the polyurethane foam with a caustic bath to form a hydrophilic ester polyurethane foam. The hydrophilic ester polyurethane foam described in US Pat. No. 6,756,416 has a moisture absorption of at least 0.32 g / cm ^{3 of} foam (20 pounds per square foot).

The water absorption capacity in cm ^{3 of the} foam material can be measured as follows. The dimensions (length x width x height) of the sample of foam material are measured in "cm" to determine the volume of material used in the test (cm ³ ). Measure and record the initial weight of the sample in grams. The sample is submerged and then squeezed by hand until no additional water drips. The sample is then weighed again and its weight (grams) recorded. This weight is considered the dead weight. Next, the sample is immersed in a water bath for 1 minute. After 1 minute, remove the sample from the bath and hang it vertically for 5 minutes to drip excess water. The sample is then weighed and recorded in grams (wet sample weight). The sample is squeezed and weighed by hand until its own weight is obtained. Repeat the dipping, dropping, weighing, and pressing steps for each sample three times. For each foam material, the above measurement is repeated using at least 12 samples. For each sample, calculate the total amount of water absorbed by subtracting its own weight from the wet sample weight. To calculate the moisture absorption capacity of the sample in cm ³ , divide the total amount of moisture absorbed in grams by the total volume of the sample. In order to calculate the water absorption capacity of the foam in cm ³ , the calculated water absorption capacity of each sample in cm ³ is averaged.

The total water absorption capacity of the foam layer can be measured as follows. The dimensions of the foam layer (length x width x height) are measured in "cm" to determine the volume of material used in the test (cm ³ ). Measure and record the initial weight of the foam layer in grams. The foam layer is soaked and then squeezed by hand until no more water drops. The foam layer is then reweighed and the weight (grams) recorded. This weight is considered the dead weight. Next, the foam layer is immersed in a water bath for 1 minute. After 1 minute, remove the foam layer from the tank and hang vertically for 5 minutes to allow excess water to drip. The foam layer is then weighed and recorded in grams (wet foam layer weight). The foam layer is squeezed and weighed by hand until its own weight is obtained. For each foam layer, the steps of dipping, dropping, weighing, and pressing are repeated three times. For each foam layer, the above measurement is repeated using at least 12 samples. For each foam layer, calculate the total amount of moisture absorbed by subtracting its own weight from the wet sample weight and average the results for the above iterations.

  The above-described measurement is performed under conditions of room temperature and normal humidity, and the measurement is performed using normal tap water.

  The thickness of the layer of the second foam is 30 mm or less, preferably 0.5 mm to 20 mm, more preferably 1 mm to 15 mm, even more preferably 2 mm to 10 mm, most preferably 4 mm to 8 mm. preferable.

The total volume of the layer of the second foam having a water absorption capacity of at least 0.35 g per cm ^{3 of} the second foam in the cleaning tool of the present specification is preferably 10 cm ³ to 100 cm ³ , more preferably. Is in the range of 20 cm ³ to 70 cm ³ , more preferably 30 cm ³ to 60 cm ³ , most preferably 40 cm ³ to 50 cm ³ .

In a preferred embodiment, the layer of the second foam having a water absorption capacity of at least 0.35 g / cm ^{3 of} the second foam is made of a material other than melamine foam.

Additional material The cleaning tool may comprise more than one layer, and if present, the additional layer is of a material other than the melamine foam and the second foam (additional material). Also good. The additional material may be suitable to provide beneficial features to the cleaning implement, such as wear, or increased stiffness, or increased grip.

  From those perspectives, the additional material may be an abrasive material or polishing pad, a rigid foam material, and a handle made of thermoplastic material, wood, metal, or combinations thereof.

Packaging Means The cleaning tool of the present specification may be incorporated as a product by packaging means.

  The packaging means herein may be any known means for packaging a cleaning tool. In practice, particularly suitable packaging means herein are selected from the group consisting of paper bags, plastic bags, paper boxes, cardboard boxes, flow wraps, plastic wraps, paper wraps, and the like, and combinations thereof.

  The packaging means herein may be printed and / or modified. Specifically, such printing and / or other modifications may be used to associate a paint surface cleaner brand name and / or logo with the cleaning implement.

Method for cleaning a painted surface In another embodiment, the present invention comprises a method for cleaning a painted surface by bringing a cleaning tool according to the present invention into contact with said painted surface. By “cleaning” is meant herein to remove dirt and / or stains from the painted surface.

  Suitable painted surfaces herein include tiles, walls, floors, sanitary appliances (sinks, showers, shower curtains, basins, toilets, etc.), household appliances (refrigerators, freezers, washing machines, automatic dryers, ovens) , Microwave ovens, dishwashers, and the like).

  The method for cleaning a painted surface according to the present invention may further comprise the step of moistening the cleaning tool with a suitable solvent, preferably tap water, before contacting the cleaning tool with the painted surface.

The perspective view of the cleaning tool by this invention. The plan view. The bottom view. The side view. (The opposite side is the same.) The end view. (The opposite side is the same.) FIG. 2 is a perspective view of a cleaning implement according to the present invention, characterized by a logo on the head of Mr. Clean®.

Claims (18)

Characterized in that it comprises a layer of melamine foam (2) having a thickness of at least 15 mm and a layer of second foam (3) having a water absorption capacity of at least 0.35 g / cm ^3. Cleaning tool (1).   The cleaning tool according to claim 1, wherein the cleaning tool has a shape selected from the group consisting of a cubic shape, a rectangular shape, a pyramid shape, a cylindrical shape, a conical shape, a pencil eraser shape, a pseudo cubic shape, and a tetrahedral shape. (1). The cleaning implement of claim 1 or claim 2, characterized in that it has a volume ranging from 1 cm ³ of 10.000cm ³ (1).   The layer of the melamine foam (2) and the layer of the second foam (3) are joined by permanent bonding or temporary bonding. The cleaning tool (1) described in 1.   The melamine foam (2) layer and the second foam (3) layer comprise a foam frame that laminates the two layers, the use of a permanent adhesive, the stitching of the two layers, two Cleaning tool (1) according to any one of claims 1 to 4, characterized in that it is joined by means of joining that provide a permanent bond selected from the group consisting of needle punching of layers and combinations thereof. ).   The cleaning tool (1) according to any one of the preceding claims, characterized in that the two layers are connected to each other by foam frame lamination.   The cleaning tool according to any one of claims 1 to 6, wherein the volume ratio of the melamine foam (2) to the second foam is in the range of 20: 1 to 1:20. 1).   The cleaning tool (1) according to any one of claims 1 to 7, characterized in that the layer thickness of the melamine foam (2) is in the range of 15 mm to 100 mm.   The cleaning tool (1) according to any one of claims 1 to 8, wherein the melamine foam (2) is a melamine-formaldehyde resin foam. The cleaning tool (1) according to any one of claims 1 to 9, characterized in that the second foam (3) has a water absorption capacity of at least 0.4 g per cm ³ . Said second foam (3) has a water absorption capacity of at least 0.35 g / cm ³ and is polyurethane foam, polypropylene foam, polyethylene foam, cellulose foam sponge, natural sponge, open cell polyester foam 11. Cleaning tool (1) according to any one of the preceding claims, wherein the cleaning tool (1) is selected from the group of foams consisting of body, cross-linked polyethylene foam, and combinations thereof. The second foam (3) is cleaning implement according to claims 1, characterized in that a polyurethane foam having a water absorption capacity of at least 0.35g per 1 cm ³ in any of claims 11 (1 ).   The cleaning tool (1) according to any one of claims 1 to 12, wherein the second foam is a hydrophilic ester polyurethane foam.   The cleaning tool (1) according to any of the preceding claims, wherein the layer of the second foam (3) has a total water absorption capacity of at least 10g.   Characterized in that it comprises a layer of melamine foam (2) having a thickness of at least 15 mm and a layer of second foam (3), the two layers being interconnected by foam frame lamination A cleaning tool (1).   A method for cleaning a painted surface, comprising bringing the cleaning tool according to any one of claims 1 to 15 into contact with the painted surface.   17. The method for cleaning a painted surface according to claim 16, wherein the method further comprises the step of moistening the cleaning tool (1) with a suitable solvent before contacting the cleaning tool with the painted surface. .   The method for cleaning a coated surface according to claim 17, wherein the appropriate solvent is water.

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