EP3988004A1 - Éponge de nettoyage et son procédé de fabrication - Google Patents

Éponge de nettoyage et son procédé de fabrication Download PDF

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Publication number
EP3988004A1
EP3988004A1 EP21201018.5A EP21201018A EP3988004A1 EP 3988004 A1 EP3988004 A1 EP 3988004A1 EP 21201018 A EP21201018 A EP 21201018A EP 3988004 A1 EP3988004 A1 EP 3988004A1
Authority
EP
European Patent Office
Prior art keywords
particles
coating
polyurethane
carrier body
cleaning
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.)
Pending
Application number
EP21201018.5A
Other languages
German (de)
English (en)
Inventor
Rudolf Beran
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.)
A&n&a & Co Kg GmbH
Original Assignee
A&n&a & Co Kg GmbH
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
Application filed by A&n&a & Co Kg GmbH filed Critical A&n&a & Co Kg GmbH
Publication of EP3988004A1 publication Critical patent/EP3988004A1/fr
Pending 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

Definitions

  • the invention relates to a cleaning sponge with a carrier body made of a foam material and with a coating on at least one of the main surfaces of the carrier body, as well as a method for producing the cleaning sponge.
  • the cleaning sponge is particularly suitable for cleaning tableware and cookware, but also for cleaning any other surfaces in the kitchen and bathroom, for example.
  • Cleaning sponges typically consist of a base body made of foam material, which serves as a carrier for a coating, the coating being the actual cleaning component.
  • the coating should also be able to remove heavy soiling, such as dried-on encrusted food residue, but should also not scratch sensitive surfaces such as Teflon-coated surfaces.
  • Cleaning sponges that clean relatively gently are commercially available. They consist of a carrier body made of polyurethane foam with a polyurethane coating containing plastic particles, such as high-density polyethylene or polypropylene. When pressure is applied, the particles are pushed into the dirt and can damage it, making it more accessible to a cleaning liquid.
  • the plastic particles are comparatively soft, so there is no risk of scratching the surfaces during cleaning on most surfaces to be cleaned. The cleaning effect can be supported by a three-dimensional surface finish of the cleaning surface, ie the cleaning surface has alternately raised and lowered areas.
  • Cleaning sponges with fleece layers made of plastic fibers are also known.
  • a disadvantage of the known cleaning sponges is that plastic particles from the coating or plastic fibers from the non-woven material become detached as a result of the action of mechanical forces such as occur when the cleaning sponge is used.
  • the mechanical loads during cleaning cause a certain amount of wear and tear on the coating or the fleece, which means that as the cleaning sponge ages, more and more plastic particles are detached from the coating or plastic fibers from the fleece and in the form of so-called " Microplastics" get into the cleaning liquid used, for example the rinsing water when washing dishes.
  • the cleaning liquid is usually fed into the sewage system and, together with other waste water, reaches sewage treatment plants, where the microplastics cause considerable problems.
  • microplastics can have for people, animals and the environment. What is certain, however, is that microplastics in seawater lead to physiological disorders, increased tumor formation and an increased mortality rate in marine animals. In this respect, it is to be feared that microplastics can also harm people.
  • the object of the present invention is therefore to provide a cleaning sponge that avoids the problems of the prior art and does not release any or at least hardly any microplastics during use, but nevertheless cleans efficiently and gently.
  • the cleaning sponge should be as universally usable as possible for cleaning different surfaces, and particularly suitable for use when cleaning tableware and cookware such as pots or pans, including cookware with scratch-sensitive surfaces such as Teflon coatings or other non-stick coatings.
  • the cleaning sponge according to the invention consists of a carrier body that is equipped with a coating, the coating representing the component that fulfills the actual cleaning task.
  • the carrier body is of a conventional type. It is a foam body with two opposite main surfaces, it being possible for one or both main surfaces to be provided with a coating according to the invention.
  • the dimensions are advantageously chosen so that the cleaning sponge has the largest possible cleaning surface, is thick enough not to tear, and fits well in the hand of the person cleaning.
  • foam materials that are stable under cleaning conditions, i.e. withstand the mechanical forces that act on the sponge during a cleaning process, and that are also stable against the effects of water and common cleaning agents, can be used as materials for the carrier body of the cleaning sponge.
  • a proven material is polyurethane.
  • foam bodies made of polyurethane are preferably used for the carrier body.
  • Polyurethane is a plastic that decomposes under the influence of UV light (daylight) and moisture, and in the last stage it is also broken down by microorganisms. Cleaning sponges made of polyurethane foam can therefore lead to the formation of microplastics after disposal. However, this microplastic, which can occur at some point when a discarded cleaning sponge decomposes, does not usually end up in the wastewater. However, it may be desirable to minimize the amount of polyurethane used. According to a further preferred embodiment, a composite body made of at least two foam material layers which are connected to one another by means of an adhesive layer is therefore used as the carrier body within the scope of this invention.
  • One of the layers is made of a natural material that does not degrade into microplastics, for example a cellulose-based material such as viscose.
  • the surface of the carrier body provided with the coating is preferably a polyurethane surface, which is why a cleaning sponge is provided with a coating according to the invention on both sides is equipped, preferably has either a carrier body made of polyurethane foam or a sandwich-like composite carrier body with a central viscose foam layer and two outer layers of polyurethane foam. This is how the adhesion between the polyurethane binder of the coating and the coated surface is best.
  • a composite carrier body made of at least two foam materials, which are connected to one another by means of an adhesive layer can also have a layer made of a material with special cleaning properties instead of a layer made of a natural material.
  • a layer is, for example, a layer of melamine resin.
  • Open-pored melamine resin sponges are known as "dirt erasers".
  • Such foams can also be used with advantage in the present invention.
  • the cleaning coating is not on the melamine resin layer but on the layer of the other foam material.
  • a polyurethane adhesive is preferably used to bond the layers of the composite carrier body to one another, particularly if at least one of the layers consists of polyurethane.
  • the surface of the carrier body to be coated can be flat, ie flat, or have a three-dimensional surface structure.
  • Three-dimensional surface structures are, for example, groove-like elevations and depressions that are arranged alternately, or island-like elevations and depressions that form a grid.
  • Such structures of the carrier body surface are transferred to the Coating and can improve the cleaning effect, since on the one hand the raised areas can contribute to breaking up the impurities and on the other hand the detached impurities can be absorbed by the depressions and transported away by the cleaning liquid. The cleaning surface is therefore not blocked by loosened dirt.
  • the coating consists of at least two types of components, the cleaning particles and a binder in which the particles are distributed and which connects them to a surface of the carrier body.
  • a polyurethane or a mixture of polyurethanes is used as the binder in the present invention.
  • the polyurethane binder must be chemically and mechanically stable under cleaning conditions.
  • criteria such as its viscosity in the uncrosslinked state and its hardness and elongation at break in the crosslinked state.
  • the viscosity is important in particular with regard to good application properties and good anchoring of the coating on the surface of the carrier body.
  • the binder should preferably be sufficiently viscous that no penetration into the interior of the carrier body takes place, but still be sufficiently fluid to allow penetration into surface pores of the carrier body, as a result of which improved fixing of the coating to the carrier body is achieved.
  • the viscosity of the polyurethane binder is preferably in the range from 1,000 to 12,000 mPas, or the viscosity of the coating composition in the range from 5,000 to 12,000 mPas, particularly preferably in the range from 7,000 to 10,000 mPas.
  • viscosity means dynamic viscosity. It is determined using a Brookfield viscometer according to ISO 2555.
  • the hardness of the coating plays a role in both the cleaning properties and the durability of the connection between the carrier body and the coating.
  • the hardness of the coating should be high enough to support the cleaning particles during cleaning, but it must not be too high either, since the cleaning sponge must remain flexible overall.
  • the Shore A hardness of the cured coating is preferably in the range from 25 to 85.
  • a Shore A hardness of from 40 to 70 is particularly preferred.
  • the Shore A hardness is determined according to ASTM D2240-00 using a Shore durometer.
  • the elongation at break of the crosslinked coating is preferably in the range from 40 to 150%, particularly preferably in the range from 50 to 100%.
  • An elongation at break in this range guarantees sufficient flexibility of the coating that the coating can follow the deformation of the soft carrier body during a cleaning process.
  • Sufficient elongation at break in combination with a hardness that is not too great also ensures that the connection between the soft carrier body and the coating remains stable under mechanical stress and deformation during the cleaning process.
  • Elongation at break is determined according to ASTM D-3574, Method E. This is basically a procedure for testing PU foam. However, the test principle can also be applied to flexible polymer films.
  • 1-component polyurethane resins such as those known as assembly foams
  • solvents are also preferably not included.
  • the proportion of free isocyanate groups in the prepolymers is preferably from 3 to 10% by weight.
  • the 1-component polyurethane resins harden within a few hours at 20 to 25° C through a reaction with atmospheric moisture.
  • Particularly preferred binders are polyurethane prepolymers based on a diphenylmethane diisocyanate adduct with diols and triols.
  • Everad RPM 2644 from Everad Adhesives, France
  • the polyurethane prepolymers can be prepared, for example, by reacting a diisocyanate such as 4,4-diphenylmethane diisocyanate with at least one diol and/or triol in the presence of a tin or amine catalyst.
  • a diisocyanate such as 4,4-diphenylmethane diisocyanate
  • the diols and triols (i.e. polyols) used preferably have a molar mass between 1000 and 5000 g/mol and a hydroxyl number between 40 and 100 mg KOH/g.
  • Polyether polyols are particularly preferred.
  • the molar ratio between the isocyanate used and the polyol used is chosen depending on the viscosity of the desired finished prepolymer. Typically, the molar ratio of isocyanate:polyol ranges from 30:70 to 50:50.
  • 1-component polyurethane resins are particularly preferred because they are very easy to process.
  • the present invention is not limited to the use of 1-component polyurethane resins.
  • the core of the present invention lies in the use of specific cleaning particles.
  • no plastic particles are used as cleaning particles, but rather natural particles. These have the advantage that no microplastics get into the waste water if particles become detached from the coating when using the cleaning sponge, especially if it is used for a long time.
  • natural particles also have disadvantages compared to plastic particles. In particular, they tend to scratch delicate surfaces and are less well retained by the binder plastic than plastic particles. Therefore, when using the cleaning sponge, there is a greater risk of particles detaching from the coating, which is harmless from an environmental point of view, but reduces the service life of the cleaning sponge.
  • the natural materials suitable for the purposes of the present invention can be divided into two groups. Particles of the first group are hereinafter referred to as “abrasive particles” and particles of the second group are hereinafter referred to as “non-abrasive particles”. What both groups have in common is that they are very good and clean gently, but the cleaning properties of the particles in the first group are even better than the particles in the second group, while the particles in the second group clean even more gently than the particles in the first group.
  • Abrasive particles include particles of pumice, silica sand, glass, corundum, and calcined bauxite. These materials are brought to suitable particle sizes in the range of preferably 20 ⁇ m to 1000 ⁇ m by grinding. Particle sizes in the range from 50 ⁇ m to 500 ⁇ m are particularly suitable. Only a single type of particle can be used in a coating, for example only particles of pumice stone, or any mixture of several of the particles mentioned can be used.
  • the most suitable material from the first group is pumice stone, in particular pumice stone with a particle size in the range of 50 to 500 ⁇ m.
  • This material perfectly embodies the desired properties. It is hard enough and the edges of the particles produced during grinding are sharp enough to have an abrasive cleaning effect, but at the same time the hardness and edge sharpness are not so great that surfaces to be cleaned are easily scratched.
  • An upper particle size limit of 500 ⁇ m is desirable insofar as larger particles tend to break during the cleaning process, which can result in sharp edges that clean less gently.
  • Pumice also has the advantage that it is particularly well fixed in the polyurethane binder. This is probably due to the porosity of the pumice particles.
  • Non-abrasive particles include precipitated silica, river sand, desert sand, and walnut shell powder. These particles can also be used alone, ie only one type of particle in a coating, or in any combination of two or more types of particles.
  • Suitable particle sizes are preferably in the range from 20 ⁇ m to 1000 ⁇ m, particle sizes in the range from 100 ⁇ m to 500 ⁇ m are particularly preferred, and the best and gentlest cleaning effect is achieved with particle sizes in the range from approx. 250 ⁇ m to 350 ⁇ m.
  • particle size is to be understood in the present invention as meaning that with a particle size of x ⁇ m to y ⁇ m, all particles pass through a sieve with a mesh size of y ⁇ m, but do not pass through a sieve with a mesh size of x ⁇ m.
  • the non-abrasive particles mentioned above have in common that they have an approximately rounded shape, ie there are no sharp edges. River sand is carried by the current and is rounded in the process, while desert sand is carried by the wind and is also rounded in the process will. Grinding walnut shells produces a relatively soft powder with no sharp edges.
  • precipitated silica is not a "natural" material, since it is produced artificially by precipitation from water glass. However, since it is identical in chemical composition to natural materials, it is regarded as a natural material in the present invention.
  • Precipitated silicon dioxide also commonly referred to as "silica” is the most suitable material from the group of non-abrasive particles for the purposes of the present invention.
  • the hydrated silica has no sharp edges. Rather, it is in the form of essentially round particles. It cleans particularly gently and is excellently fixed by the polyurethane binder, which is probably due to the porosity of the silicon dioxide particles.
  • the most suitable material for cleaning highly sensitive surfaces is therefore precipitated silica with a particle size range of 100 ⁇ m to 500 ⁇ m.
  • Sipernat 2200 from Dow Chemicals can be mentioned.
  • Walnut shell powder is also ideal, but it is not as easy to process as the other materials mentioned. When mixed with the polyurethane binder, it tends to foam the polyurethane, which can lead to instability in the application process. It may be necessary to add defoamers to a coating composition containing walnut shell powder.
  • Coatings according to the invention can consist exclusively of polyurethane binder and cleaning particles distributed therein, but they can also contain other components if these affect the properties do not interfere with the coating.
  • the coatings are colored, ie they contain at least one coloring substance in addition to the polyurethane binder and the cleaning particles.
  • Coloring substances are organic or inorganic pigments and inorganic or organic dyes. Unlike dyes, which are soluble, pigments are made up of particles. When using pigments, care must be taken not to use pigments that are too hard or particles that are too large, in order to prevent the pigments themselves from acting as "cleaning particles" and scratching the surfaces to be cleaned. Suitable coloring substances are commercially available. An example is Hostaperm Yellow H3G from Clariant GmbH.
  • the proportion of the coloring substance in the coating should preferably not exceed a quantity of about 4% by weight. A typical amount is about 0.5% by weight.
  • the coating can contain other additives known per se in the field of plastic coatings, but preferably contains only polyurethane binders, cleaning particles, and optionally one or more coloring substances.
  • a cleaning sponge according to the invention is preferably carried out in such a way that a polyurethane binder, cleaning particles and optionally a coloring substance and / or other auxiliaries are mixed in the respectively desired amounts to form a coating composition, then the coating composition is applied to a main surface of a carrier body made of a foam material is applied and then cured in air.
  • the coating compositions preferably contain, in the case of abrasive cleaning particles, 60 to 80% by weight polyurethane binder, balance abrasive particles and up to 4% by weight coloring substance, i.e. 16 to 40% by weight abrasive cleaning particles.
  • the compositions particularly preferably contain 65 to 70% by weight of polyurethane binder, 27.5 to 34.7% by weight of abrasive particles and 0.3 to 2.5% by weight of inorganic and/or organic pigments.
  • Pumice particles are preferably used as the abrasive particles, and a 1-component polyurethane resin is preferably used as the polyurethane binder.
  • the coating compositions preferably contain 75 to 95% by weight polyurethane binder, the balance non-abrasive particles and up to 4% by weight coloring substance, i.e. 1 to 25% by weight non-abrasive particles.
  • the coating compositions particularly preferably contain 82.5 to 89.5% by weight of polyurethane binder, 8 to 17.2% by weight of non-abrasive particles and 0.3 to 2.5% by weight of inorganic and/or organic pigments .
  • Silica particles are preferably used as the non-abrasive particles, and a one-component polyurethane resin is preferably used as the binder.
  • the coating composition is preferably applied to a surface of the carrier body by roller application.
  • Roller application processes are preferred insofar as they lead to particularly good anchoring of the cleaning particles in the polyurethane film and the coating result is very homogeneous and visually attractive.
  • a polyurethane resin is preferred selected which gives a coating composition with a viscosity in the range from 5,000 to 12,000 mPas, preferably from 7,000 to 10,000 mPas.
  • Such polyurethane resins have a viscosity in the range from 1500 to 7000 mPas.
  • the coating composition is then cured, ie the polyurethane resin is crosslinked.
  • the curing conditions depend on the type of polyurethane resin used.
  • a 1-component polyurethane resin which cures in air by reaction with atmospheric moisture at 20 to 25° C. within 2 to 8 hours is preferred.
  • At low atmospheric humidity (less than about 40%) it may be necessary to moisten the substrate surface to be coated with water before applying the coating composition.
  • the polyurethane resin can also first be applied to a surface of the carrier body, for example by roller application or by spraying, and then the abrasive or non-abrasive particles are scattered onto the polyurethane resin film, which is still wet.
  • roller application preference is given to using a polyurethane resin with a viscosity in the range from 5,000 to 12,000 mPas, preferably from 7,000 to 10,000 mPas, and in the case of spraying on the polyurethane resin, preference is given to a polyurethane resin with a viscosity in the range from 1,000 to 5,000 mPas from 1,500 to 3,000 mPas.
  • the polyurethane resin is crosslinked.
  • the crosslinking conditions depend in turn on the type of polyurethane resin used, preference being given to a 1-component polyurethane resin which cures in air by reaction with atmospheric moisture at 20 to 25° C. within 2 to 8 hours.
  • the coating composition or the polyurethane resin can be applied to a "finished" carrier body or composite carrier body, i.e. to a carrier body with the dimensions of the cleaning sponge to be produced, but alternatively a carrier body panel or composite carrier body panel can also be coated, from which, after the coating has cured, the cleaning sponges can be produced in be cut or punched out to the desired dimensions and shapes.
  • a carrier body panel or composite carrier body panel can also be coated, from which, after the coating has cured, the cleaning sponges can be produced in be cut or punched out to the desired dimensions and shapes.
  • the opposite surface of the (composite) carrier body can also be provided with a coating according to the invention or another coating. It is also possible to first coat one of the layers (carrier) of a composite carrier body and then to bond this coated carrier body to one or more further layers (for example made of cellulose or melamine resin) on its uncoated surface.
  • Preferred coating thicknesses are in the range from 0.5 to 4 mm, particularly preferably in the range from 1 to 3 mm.
  • Preferred coating weights are in the range from 200 to 500 g/m 2 , more preferably in the range from 250 to 400 g/m 2 .
  • the cleaning sponge 1 shown has a carrier body 2 made of polyurethane foam material with a first main surface 2' and a second main surface 2".
  • the first main surface 2' is covered by a coating 3 made of polyurethane with it distributed abrasive or non-abrasive particles 4.
  • the surface 3' of the coating 3 forms the cleaning surface of the cleaning sponge 1.
  • the particles 4 are in the 1 embodiment shown is randomly distributed in the coating 3, as is the case when a coating composition of polyurethane resin having particles 4 dispersed therein is applied to the support body 2.
  • the polyurethane resin is used first applied to the carrier body 2 and then the particles 4 scattered onto the not yet crosslinked polyurethane resin, the particles 4 are more localized on the surface 3 ′ of the coating 3 .
  • the particles 4 are more localized on the surface 3 ′ of the coating 3.
  • fewer particles 4 are needed than with a statistical distribution of the particles 4 throughout the volume of the coating 3.
  • cleaning sponges with a statistical distribution of the particles 4 throughout the volume of the coating 3 have a longer service life, since the particles 4 are more permanently anchored in the coating 3.
  • the carrier body is a composite body made of a foam layer 5 made of polyurethane and a foam layer 7 made of viscose, which are connected by means of an adhesive layer 6 .
  • the surface of the polyurethane foam layer that is not bonded to the viscose foam layer is equipped with a coating 3 in which abrasive or non-abrasive particles 4 are randomly distributed.
  • the surface 3' of the coating 3 represents the cleaning surface of the cleaning sponge 1.
  • the illustrated embodiment of the cleaning sponge 1 essentially has the shape of a cuboid, while the 1 illustrated embodiment is more cubic.
  • the shape of the cleaning sponges is basically arbitrary, with shapes being preferred that are simple (and therefore inexpensive) to produce. shapes like them in 1 and 2 may be die cut from foam sheet without waste, but the present invention is not limited to such shapes.
  • the cleaning sponges according to the invention can also have any desired curved contours, for example contours which make it easier to reach places that are difficult to access.
  • opposite side faces of a cleaning sponge can have indentations that make it possible to better and more securely hold the cleaning sponge during a cleaning process.
  • only one surface of the carrier body 2 is equipped with a coating 3.
  • the second main surface 2" could also be equipped with a coating according to the invention or another coating. It is also possible to provide a coating 3 according to the invention with abrasive particles on one main surface of the carrier body 2 and a coating 3 according to the invention on the other main surface of the carrier body 2 Coating 3 provided with non-abrasive particles.
  • a carrier body 2 can also be a composite body made up of more than 2 layers that are connected by means of an adhesive (as in 2 shown), be.
  • an adhesive as in 2 shown
  • the in 2 shown composite body on the main surface 2 "of the foam layer 7 made of viscose can be connected by means of a further adhesive layer to a further foam layer made of polyurethane, which in turn could have a coating 3 according to the present invention.
  • the cleaning sponges 1 shown each have unstructured surfaces or main surfaces.
  • the coating 3 according to the invention can be applied not only to flat surfaces, but also to surfaces with a largely random structure.
  • An example of a cleaning sponge 1 with a structured surface is in the Figures 3 and 4 shown.
  • FIG. 3 shows a plan view of the cleaning surface 3 'of a cleaning sponge 1 according to the invention, and 4 shows the in 3 illustrated cleaning sponge in cross section along the line AA '.
  • the surface 3' has a three-dimensional structure with elevations 8 and depressions 9 arranged alternately in a regular grid 3 the maxima of the elevations 8 are shown as solid circles, while the minima of the depressions 9 are shown as dotted circles.
  • the particles 4 are in 3 not shown. Viewed in cross section ( 4 ) such a raster forms a waveform.
  • the cleaning sponges according to the invention can also have any other three-dimensional surface structures, for example grooves, which can contribute to improving the cleaning effect.
  • the cleaning sponges according to the invention have a long service life. This also means that they pollute the environment less with waste plastic than less resistant and therefore short-lived cleaning sponges. At the end of their useful life, the cleaning sponges according to the invention can be decomposed under the influence of daylight (UV light) and moisture, and ultimately also by microorganisms. Alternatively, thermal recycling is also possible.

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  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
EP21201018.5A 2020-10-13 2021-10-05 Éponge de nettoyage et son procédé de fabrication Pending EP3988004A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020126904.8A DE102020126904A1 (de) 2020-10-13 2020-10-13 Reinigungsschwamm und verfahren zu seiner herstellung

Publications (1)

Publication Number Publication Date
EP3988004A1 true EP3988004A1 (fr) 2022-04-27

Family

ID=80810163

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Application Number Title Priority Date Filing Date
EP21201018.5A Pending EP3988004A1 (fr) 2020-10-13 2021-10-05 Éponge de nettoyage et son procédé de fabrication

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EP (1) EP3988004A1 (fr)
DE (1) DE102020126904A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6352567B1 (en) * 2000-02-25 2002-03-05 3M Innovative Properties Company Nonwoven abrasive articles and methods
WO2002090483A2 (fr) * 2001-05-08 2002-11-14 Unilever Plc Chiffon de nettoyage
DE102006005160A1 (de) * 2006-02-04 2007-08-09 Carl Freudenberg Kg Scheuerkörper
US20180028036A1 (en) * 2015-02-27 2018-02-01 3M Innovative Properties Company Consumer scrubbing articles with ceramic microparticles and method of making same
EP3424642A1 (fr) * 2016-02-29 2019-01-09 Xebec Technology Co., Ltd. Outil de polissage poreux et outil de polissage comprenant celui-ci

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20109652U1 (de) 2001-06-09 2001-09-13 Matsumoto, Keiko, Jyoto, Osaka Reinigungsschwamm
CA2828029C (fr) 2011-02-24 2016-09-13 The Procter & Gamble Company Instrument de nettoyage a base de mousse de melamine-formaldehyde comportant des particules abrasives
DE202015101364U1 (de) 2015-03-17 2015-03-20 Kalle Gmbh Cellulose-Schwammtuch mit abrasiven Eigenschaften

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6352567B1 (en) * 2000-02-25 2002-03-05 3M Innovative Properties Company Nonwoven abrasive articles and methods
WO2002090483A2 (fr) * 2001-05-08 2002-11-14 Unilever Plc Chiffon de nettoyage
DE102006005160A1 (de) * 2006-02-04 2007-08-09 Carl Freudenberg Kg Scheuerkörper
US20180028036A1 (en) * 2015-02-27 2018-02-01 3M Innovative Properties Company Consumer scrubbing articles with ceramic microparticles and method of making same
EP3424642A1 (fr) * 2016-02-29 2019-01-09 Xebec Technology Co., Ltd. Outil de polissage poreux et outil de polissage comprenant celui-ci

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