Shaped detergent body without adhesive effect

Abstract

The invention relates to a self-adhesive shaped detergent body (10) comprising: a shaped body having a planar lower face (21) and an upper face (22); and an adhesive layer (31) which is provided at least on the planar lower face (21) of the shaped body, wherein the adhesive layer (31) is made of a water-soluble material and becomes self-adhesive only upon coming into contact with a moistened surface (40), characterised in that the shaped body cannot independently adhere to a surface.

Description

[0001] 2024PF00295

[0002] Cleaning agent molds without adhesive effect

[0003] Conventional toilets with a rim have a specific design where the rim is attached to the upper edge of the toilet bowl. The rim is a horizontal band that extends along the upper inner edge of the toilet bowl and is positioned above the water level.

[0004] The flushing mechanism of these toilets ensures that the flushing water is directed through the toilet rim to efficiently clean the inner surface of the toilet bowl. The rim helps to distribute the water evenly, thus guaranteeing thorough cleaning.

[0005] Toilet cleaning blocks, also known as toilet blocks, have long been used for cleaning, disinfecting, and fragrance toilets, both under the rim (so-called rim blocks) and in the cistern (in-tank blocks or cistern blocks). In recent years, aesthetics and performance have become increasingly important. This has led, for example, to the development of solid, gel, or liquid toilet bowl fresheners, some of which are offered in multi-chamber containers, thus combining a cleaning agent dispensed when the toilet is flushed with continuous room fragrance.

[0006] Solutions are known from the prior art in which a cleaning product is applied to the surface of the toilet bowl.

[0007] EP 2 141 221 A1 discloses an adhesive cleaning product comprising a substantially flat adhesive surface for adhesion to a surface, such as the wall of the toilet bowl, and an opposing active surface, preferably rounded, facing outwards and exposed to the action of water flow, for example the flushing water of the toilet.

[0008] The cleaning product is packaged as a single-use applicator. The product is contained in a tray. The applicator includes handle sections that are attached to the tray. Finally, the device has a sealing element. This element is, for example, a peelable film that is firmly attached to the outer ring or to the tray itself. 2024PF00295

[0009] The prior art cleaning product is packaged as a single-use applicator. The cleaning product is contained in a tray. The applicator includes handle sections that are connected to the tray. The cleaning product has a substantially flat adhesive layer. Finally, the single-use applicator is equipped with a sealing element to prevent the products from sticking together before use. This sealing element is, for example, in the form of a peelable film that is firmly attached to the outer ring or to the tray itself.

[0010] Newer rimless toilets, also known as "rim-free toilets" or "rimless toilets," differ in their design from conventional toilets with a rim. These modern toilets are characterized by the absence of a horizontal rim on the upper inner edge of the toilet bowl.

[0011] The rimless design offers several advantages. Firstly, it makes cleaning easier, as there is no rim where deposits and bacteria can accumulate. This contributes to a more hygienic environment and reduces cleaning effort.

[0012] The flushing technology in rimless toilets is designed so that the flushing water effectively and evenly reaches the entire inner surface of the toilet bowl. This enables thorough cleaning and helps to minimize unpleasant odors.

[0013] The familiar toilet cleaning blocks, also known as toilet blocks, are designed for toilets with a rim. Due to their different construction and, in particular, the different flushing water flow, these solutions are not suitable for rimless toilets.

[0014] Furthermore, existing solutions are not ecologically sustainable due to the need for elaborate packaging. Therefore, there is a need for cleaning products that overcome these disadvantages.

[0015] These disadvantages are overcome by the invention according to the aspects described below.

[0016] According to a first aspect, a first self-adhesive cleaning agent molded body is described comprising: a molded body having a planar underside and a top side; and 2024PF00295 an adhesion layer which is arranged at least on the planar underside of the molded body, wherein the adhesion layer is formed from a water-soluble material and only becomes self-adhesive upon contact with a moistened surface, characterized in that the molded body is not independently adhesive on a surface.

[0017] Preferably, no adhesion promoter is present in the composition of the molded body and / or the molded body has no further adhesive layers or adhesive coatings.

[0018] The solution according to the invention is more ecologically sustainable than solutions known from the prior art, since elaborate packaging can be dispensed with. This is because the adhesive layer, which is formed from a water-soluble material, preferably only becomes self-adhesive upon contact with a moistened surface.

[0019] Sealing agents to prevent the products from sticking together before use are therefore unnecessary. It was surprisingly found that the cleaning agent mold adheres sufficiently well to the surface even without an additional adhesive layer or any additional adhesive compound within the mold itself. Since no additional adhesives, and in particular no further adhesive layers, are required, particularly efficient manufacturing is possible.

[0020] Preferably, the self-adhesive cleaning agent molded body is essentially free of fatty alcohol ethoxylates. The self-adhesive cleaning agent molded body therefore contains no fatty alcohol ethoxylates whatsoever, regardless of the chain cut. Even more preferably, the self-adhesive cleaning agent molded body is essentially free of fatty alcohol alkoxylates. The self-adhesive cleaning agent molded body therefore contains no fatty alcohol alkoxylates whatsoever, regardless of the chain cut, and no alkoxylation whatsoever.

[0021] According to a preferred embodiment, the cleaning agent body is described, wherein the adhesive layer has a thickness in the range of 1 pm to 1 mm, preferably between 10 pm and 50 pm. A film of this thickness enables good adhesion to the toilet surface even in the absence of an additional adhesive layer and / or an adhesive compound contained within the body.

[0022] According to a preferred embodiment, the cleaning agent mold is described in which the adhesive layer, made of a water-soluble material, only becomes sticky upon contact with a moistened surface. 2024PF00295

[0023] According to another preferred embodiment, the body is completely free of adhesion promoters and adhesives.

[0024] According to a preferred embodiment, the cleaning agent mold body is described, wherein the adhesion layer is formed from PVOH (polyvinyl alcohol).

[0025] According to a preferred embodiment, in addition to the water-soluble adhesive layer on the planar underside, which may be formed in particular from PVOH, the body does not have a further adhesive layer on the planar underside of the body. It has been found that an adhesive layer made of PVOH with a thickness in the range of 1 pm to 1 mm, preferably 10 pm to 50 pm, and more preferably 10 to 30 pm, exhibits sufficiently good adhesive properties to adhere to the surface. An additional adhesive layer, which is either permanently adhesive or develops adhesive properties through contact with moisture, is therefore not required. This enables more efficient production of the self-adhesive cleaning agent mold, as the provision of an additional adhesive layer can be dispensed with.

[0026] According to a preferred embodiment, the body is essentially free of adhesives and adhesion promoters such as fatty alcohol ethoxylates. It has been found that, in particular, an adhesion layer of PVOH with a thickness in the range of 1 pm to 1 mm, preferably 10 pm to 50 pm, exhibits sufficiently good adhesive properties to adhere to the surface. This enables more efficient production of the self-adhesive cleaning agent body, as the inclusion of adhesion promoters in the cleaning agent body can be dispensed with.

[0027] According to a preferred embodiment, in addition to the water-soluble adhesive layer on the planar underside, which may in particular be formed from PVOH, the body has no further adhesive layer on the planar underside of the body, and furthermore, the body is essentially free of adhesives and adhesion promoters such as fatty alcohol ethoxylates. This enables particularly efficient production of the self-adhesive cleaning agent mold.

[0028] According to a preferred embodiment, the cleaning agent molded body comprises at least one alkyl polyglycoside (APG) as a surfactant. These are nonionic surfactants and belong to the sugar surfactants. Surprisingly, the use of APG imparts plastic deformability to the body. This allows the body to be easily shaped during the 2024PF00295 process.

[0029] The manufacturing process makes it easier to shape and it conforms appropriately to the toilet surface during use. This allows the APG to adhere to the toilet surface without the need for additional adhesives.

[0030] Preferably, at least one APG is present in an amount of at least 5 wt.% in the composition of the cleaning agent molded body, preferably in an amount of 5 wt.% to 20 wt.%.

[0031] According to a preferred embodiment, the cleaning agent mold body is described, wherein the top surface of the mold body is non-planar.

[0032] According to a preferred embodiment, the cleaning agent mold body is described, wherein the top of the mold body has at least one vertex.

[0033] Furthermore, the use of a self-adhesive cleaning agent molded body (10) in a rimless toilet is described in general terms. The cleaning agent molded body (10) comprises: a molded body having a planar underside (21) and an upper side (22); and an adhesive layer (31) which is arranged at least on the planar underside (21) of the molded body (20). The adhesive layer (31) is made of a water-soluble material and only becomes self-adhesive upon contact with a moistened surface (40). Such a cleaning agent molded body is particularly suitable for rimless toilets with regard to its flushing behavior. Solutions based on solid gels, in particular, are less suitable. This is because, in rimless toilets, the water flows laterally at higher pressure over the surface of the toilet, whereas in toilets with a rim, the water is flushed into the toilet "from above" over the rim.Solid gels are quickly deformed by the increased water pressure. Furthermore, due to the increased wetting of the toilet surface with water, the use of a water-soluble film as an adhesive layer is particularly suitable for rimless toilets. This film is preferably free of other adhesives.

[0034] This describes the use of the cleaning agent mold, whereby the cleaning agent mold is applied with its planar underside to a moistened surface, in particular a sanitary surface of a rimless toilet. 2024PF00295

[0035] According to a second aspect, a self-adhesive cleaning agent molded body is described comprising: a molded body having a planar underside and a top side; a first water-soluble adhesion layer arranged on the planar underside of the molded body, and a second water-soluble adhesion layer arranged on the top side of the molded body.

[0036] According to a preferred embodiment, the cleaning agent mold body is described, wherein the first adhesion layer is formed from PVOH and / or PVA.

[0037] According to a preferred embodiment, the cleaning agent mold body is described, wherein the second adhesion layer is formed from PVOH and / or PVA.

[0038] According to a preferred embodiment, the cleaning agent mold body is described, wherein the top surface of the mold body is non-planar.

[0039] According to a preferred embodiment, the cleaning agent mold body is described, wherein the top of the mold body has at least one vertex.

[0040] Furthermore, a use of the cleaning agent mold is described, wherein the cleaning agent mold is applied with the planar underside to a moistened surface, in particular a sanitary surface.

[0041] According to a third aspect, a self-adhesive cleaning agent molded body is described comprising: a molded body having a planar underside and a non-planar top side; an adhesion layer which is arranged on the planar underside of the molded body; characterized in that the molded body has a first inflection point.

[0042] According to a preferred embodiment, the cleaning agent mold body is described, wherein the mold body further comprises a vertex.

[0043] According to a preferred embodiment, the cleaning agent mold body is described, wherein the mold body further comprises a second inflection point and the vertex is located between the first inflection point and the second inflection point. 2024PF00295

[0044] Furthermore, a use of the cleaning agent mold is described, wherein the cleaning agent mold is applied with the planar underside to a moistened surface, in particular a sanitary surface.

[0045] According to a fourth aspect, a self-adhesive cleaning agent molded body is described comprising: a molded body having a planar bottom and a top; and an adhesion layer which substantially completely encloses the molded body.

[0046] According to a preferred embodiment, the cleaning agent mold body is described, wherein the mold body further comprises a vertex.

[0047] Furthermore, a use of the cleaning agent mold is described, wherein the cleaning agent mold is applied with the planar underside to a moistened surface, in particular a sanitary surface.

[0048] According to a fifth aspect, a self-adhesive cleaning agent molded body is described comprising: a molded body having a planar underside which forms a plane in the xy direction and a top side; and an adhesion layer which is arranged at least on the planar underside of the molded body, characterized in that the underside of the molded body has an n-fold axis of symmetry along the z-axis, where n > 3.

[0049] According to a preferred embodiment, the cleaning agent mold body is described, wherein the underside of the mold body has a substantially circular shape when viewed along the z-axis in the xy plane.

[0050] According to a preferred embodiment, the cleaning agent mold body is described, wherein the top of the mold body has at least one vertex in the z-direction.

[0051] According to a preferred embodiment, the cleaning agent mold body is described, wherein the adhesion layer is formed from PVA and / or PVOH. 2024PF00295

[0052] Furthermore, a use of the cleaning agent mold is described, wherein the cleaning agent mold is applied with the planar underside to a moistened surface, in particular a sanitary surface.

[0053] According to a sixth aspect, a self-adhesive cleaning agent molded body is described comprising: a molded body having a planar underside which forms a plane in the xy direction and a top side; and an adhesion layer which is arranged at least on the planar underside of the molded body, characterized in that the molded body has a first plane of symmetry perpendicular to the planar underside in the yz direction.

[0054] According to a preferred embodiment, the cleaning agent mold body is described, wherein the mold body has a second plane of symmetry perpendicular to the planar underside in the xz direction.

[0055] According to a preferred embodiment, the cleaning agent mold body is described, wherein the top of the mold body has at least one vertex (26) in the z-direction.

[0056] According to a preferred embodiment, the cleaning agent mold body is described, wherein the underside of the mold body has an n-fold axis of symmetry along the z-axis, where n > 3.

[0057] According to a preferred embodiment, the cleaning agent mold body is described, wherein the underside of the mold body has a substantially circular shape when viewed along the z-axis in the xy plane.

[0058] Furthermore, a use of the cleaning agent mold is described, wherein the cleaning agent mold is applied with the planar underside to a moistened surface, in particular a sanitary surface.

[0059] According to a seventh aspect, a packaging unit is described comprising: a plurality of cleaning agent molded bodies; and a packaging body; wherein the at least one cleaning agent molded body comprises: 2024PF00295 a water-soluble molded body having a planar underside and a non-planar topside; and a water-soluble first adhesion layer which is arranged at least on the planar underside of the molded body.

[0060] According to a preferred embodiment, the packaging unit is described, wherein the packaging body consists essentially of a recyclable material.

[0061] According to a preferred embodiment, the packaging unit is described, wherein the packaging body consists essentially of a recyclable fibrous material.

[0062] According to a preferred embodiment, the packaging unit is described in which the entire packaging unit is essentially free of fossil synthetic polymer materials.

[0063] According to a preferred embodiment, the packaging unit is described wherein the cleaning agent mold body has a water-soluble second adhesion layer which is arranged on the non-planar top surface of the mold body.

[0064] According to a preferred embodiment, the packaging unit is described in which the entire packaging unit is essentially free of fossil synthetic polymer materials.

[0065] According to a preferred embodiment, the packaging unit is described wherein the water-soluble molded body has a vertex (26).

[0066] According to a preferred embodiment, the packaging unit is described in which a first cleaning agent mold body is arranged with its underside substantially centered on the apex of the top of a second cleaning agent mold body.

[0067] According to a preferred embodiment, the packaging unit is described in which the first adhesive layer and / or a second adhesive layer only becomes self-adhesive upon contact with a moistened surface. 2024PF00295

[0068] According to a preferred embodiment, the packaging unit is described in which the cleaning agent mold body is applied with its planar underside to a moistened surface, in particular a sanitary surface.

[0069] According to a preferred embodiment, the packaging unit is described in which the cleaning agent mold body is applied with its planar underside to a moistened surface, in particular a sanitary surface.

[0070] The features of the respective aspects are not limited to these, but can be combined with one another according to the invention. In particular, any cleaning agent mold described in the aspects can be used in the packaging unit according to the seventh aspect of the invention.

[0071] The invention according to various embodiments is explained below with reference to the figures. In detail, the figures show:

[0072] Figure 1: The self-adhesive cleaning agent mold body according to a first embodiment.

[0073] Figure 2: The use of the self-adhesive cleaning agent mold according to the first embodiment.

[0074] Figure 3: The self-adhesive cleaning agent mold body according to a second embodiment.

[0075] Figure 4a: The use of the self-adhesive cleaning agent mold according to a second embodiment before rinsing.

[0076] Figure 4b: The use of the self-adhesive cleaning agent mold body according to a second embodiment after rinsing.

[0077] Figure 5a: The use of the self-adhesive cleaning agent mold according to a third embodiment before rinsing.

[0078] Figure 5b: The use of the self-adhesive cleaning agent mold body according to the third embodiment during rinsing.

[0079] Figure 6: The self-adhesive cleaning agent mold body according to a fourth embodiment

[0080] Figure 7a: Top view of a self-adhesive cleaning agent mold body according to a fifth embodiment.

[0081] Figure 7b: Top view of a self-adhesive cleaning agent mold body according to the fifth embodiment during rinsing. 2024PF00295

[0082] Figure 8: The self-adhesive cleaning agent mold body according to the fifth embodiment in side view.

[0083] Figure 9: Top view of a self-adhesive cleaning agent mold body according to a sixth embodiment.

[0084] Figure 10a: The self-adhesive cleaning agent mold body according to the sixth embodiment in side view.

[0085] Figure 10b: The self-adhesive cleaning agent mold body according to the sixth

[0086] embodiment with flushing water flow

[0087] Figure 11a: Packaging unit with a cleaning agent molded body according to the first

[0088] embodiment

[0089] Figure 11b: Packaging unit with a cleaning agent molded body according to the second embodiment.

[0090] 2024PF00295

[0091] Figure 1 shows the self-adhesive cleaning agent mold 10 according to a first embodiment comprising: a mold 20 having a planar underside 21 and a top side 22; and an adhesion layer 31 which is arranged at least on the planar underside 21 of the mold 20, wherein the adhesion layer 31 is formed from a water-soluble material and only becomes self-adhesive upon contact with a moistened surface 40, wherein the adhesion layer 31 has a thickness in a range between 10 pm and 3 mm.

[0092] Preferably, the molded body is free of adhesion promoters, so that the adhesive effect is achieved primarily by the water-soluble film. In particular, the composition of the body does not contain fatty alcohol ethoxylate. The planar underside was then covered with a water-soluble film approximately 25 pm thick. No further adhesive layers were placed between the body 21 and the water-soluble film, i.e., the adhesion layer 31. This applies accordingly to all other figures.

[0093] Figure 2 shows an application of the self-adhesive cleaning agent mold 10, in which the cleaning agent mold 10 is applied with its planar underside 21 to a moistened sanitary surface 40. The adhesion layer 31 is formed from a water-soluble material and only becomes self-adhesive upon contact with a moistened surface 40. This eliminates the need for an additional adhesive within the mold and / or additional adhesion layers on the planar underside 21. The water-soluble film, labeled as the adhesion layer 31 in the figure, is entirely sufficient for adhesion.

[0094] The adhesive layer is not necessarily limited to the underside 21. The solution according to the invention is more ecologically sustainable than solutions known from the prior art, as it eliminates the need for complex packaging. This is because the adhesive layer, which is formed from a water-soluble material, only becomes self-adhesive upon contact with a moistened surface. Sealing agents to prevent the products from sticking together before use are therefore unnecessary. Since no additional adhesives, either as an additional adhesive layer and / or adhesion promoters, in particular fatty alcohol ethoxylates, are required, particularly efficient production is possible. 2024PF00295

[0095] In contrast, the product according to the invention has an adhesion layer that is formed from a water-soluble material and only becomes self-adhesive upon contact with a moistened surface.

[0096] The adhesive layer has a thickness in the range of 1 pm to 1 mm, preferably 1 pm to 80 pm, more preferably 1 pm to 50 pm, more preferably 10 pm to 50 pm, and particularly preferably 10 pm to 30 pm. Within the specified range, it has preferably been found that the self-adherence of the surface can be reduced, especially if the products are stored in a dry environment. Upon contact with a moistened surface, however, the adhesive layer, whose thickness lies within the specified range, preferably becomes sticky and leaves no residue after rinsing the cleaning agent.

[0097] In particular, it was found that an adhesion layer thinner than the lower limit of the specified range does not become sufficiently self-adhesive on a moistened surface.

[0098] Furthermore, it was found that an adhesion layer thicker than the upper limit of the specified area leaves aesthetically unsightly residues on the surface of the sanitary object.

[0099] Figure 3 shows the self-adhesive cleaning agent mold according to a second embodiment. The first adhesive layer 31 is made of a water-soluble material and only becomes self-adhesive upon contact with a moistened surface 40. A second water-soluble adhesive layer 32 is arranged on the top surface 22 of the mold 20 and serves as a protective film. The first adhesive layer 31 and the second adhesive layer 32 are at least partially unbonded, so that a certain distance exists between them.

[0100] Figure 4a shows the cleaning agent mold 10 according to the second embodiment on the moistened sanitary surface 40 before rinsing. The second adhesion layer 32 is still arranged on the top surface 22 of the mold 20 before rinsing.

[0101] Figure 4b shows the cleaning agent mold 10 on the moistened sanitary surface 40 after rinsing. The second adhesion layer 32 is dissolved from the top 22 of the mold 20 by the rinsing, while the first adhesion layer 31 ensures adhesion to the surface 40. 2024PF00295

[0102] Figure 5a shows a use of the self-adhesive cleaning agent mold 10 according to a third embodiment, wherein the cleaning agent mold 10 is applied with its planar underside 21 to a moistened sanitary surface 40. The adhesion layer 31 is preferably made of a water-soluble material and only becomes self-adhesive upon contact with a moistened surface 40. One adhesion layer 31 is arranged on the planar underside 21 of the mold 20. However, the adhesion layer is not necessarily limited to the underside 21. The mold 30 has a first turning point 25.

[0103] Figure 5b shows the cleaning agent mold 10 according to the third embodiment on the moistened sanitary surface 40 during rinsing. The water is advantageously guided over the surface of the mold 20. This is achieved by the mold 30 having a first inflection point 25. Furthermore, the mold 30 has a second inflection point 27 and a vertex 26, which is arranged between the first inflection point 25 and the second inflection point 27. During rinsing, the water flow is initially directed over the first inflection point 25 and then flows over a vertex and finally over the second inflection point 27. It has been found that such water flow guidance improves the rinsing performance. The fragrances and cleaning agents contained in the mold 30 can preferably be released into the rinse water.

[0104] Figure 7a: Top view of a self-adhesive cleaning agent mold body according to a fourth embodiment.

[0105] The molded body (20) has a planar underside (21) which forms a plane in the xy direction and an upper side (22); and an adhesion layer (31) which is arranged at least on the planar underside (21) of the molded body (20), characterized in that the underside (21) of the molded body (20) has an n-fold axis of symmetry along the z-axis, where n > 3.

[0106] Figure 7b: Top view of a self-adhesive cleaning agent mold body according to the fourth embodiment during rinsing.

[0107] The solution according to the invention, unlike prior art solutions, takes into account the special characteristics of rimless toilets. Rimless toilets are toilets designed without a traditional flushing rim. These toilets have a smooth, rimless inner bowl, which facilitates cleaning because less dirt and germs can accumulate in hard-to-reach areas. 2024PF00295

[0108] The absence of a rim also allows for a more effective flush, as the water flows directly into the drain without being interrupted by a rim. Rimless toilets have become popular in some countries because they are considered more hygienic and easier to clean.

[0109] In a rimless toilet, the water flow differs from that of conventional toilets with a rim. A rimless toilet has no rim, meaning the water flows directly from one or more jets into the toilet bowl. This design is intended to help distribute the water more effectively across the entire inner surface of the toilet bowl.

[0110] The inventive shape of the self-adhesive cleaning agent body takes into account the different flow pattern, such that the design of rimless toilets is geared towards effectively directing the water flow across the entire inner surface of the toilet bowl. The inventive symmetry exhibits a preferred flow pattern over the cleaning agent body and thus improved flushing performance and adhesion, which will be explained in more detail below:

[0111] The symmetrical shaped body according to the invention, with a rounded underside, exhibits efficient flow dynamics that allow the water to flow evenly around the body. This is shown in the following figure:

[0112] Due to the higher rotational symmetry of the underside of the cleaning agent mold body, a lateral water flow can help to distribute the rinsing water evenly around the entire body, resulting in even cleaning.

[0113] In particular, this will help create efficient flow dynamics as the water flows around the body. This can improve cleaning efficiency, as the water is guided evenly through the entire shape. In this way, "dead zones" where the water doesn't circulate well can be minimized in a rotationally symmetrical body, since the shape doesn't change when rotated. A lateral water flow helps to break through these dead zones and ensure that all areas of the body are reached.

[0114] Furthermore, turbulence is minimized because the flow around the body is more even. Turbulence can prevent dirt particles from being effectively rinsed away, especially in the case of a lateral water flow as is the case with rimless toilets.

[0115] Even rinsing of the body also improves its adhesion to the surface, preventing uneven removal of the adhesive layer. Uniform rinsing ensures that pressure is applied evenly across the surface. Uneven water flow can lead to local pressure differences that could cause uneven removal of the adhesive layer. Uniform rinsing reduces the likelihood of the adhesive layer adhering more strongly in certain areas than others, thus helping to ensure consistent removal across the entire surface.

[0116] Overall, the symmetry according to the invention thus shows a preferred flow pattern over the cleaning agent mold body and therefore improved rinsing behavior and adhesion.

[0117] Figure 8: The self-adhesive cleaning agent mold body according to the fifth embodiment in side view. The mold body 20 has a planar underside 21, which forms a plane in the xy direction, and a top surface 22; and an adhesion layer 31, which is arranged at least on the planar underside 21 of the mold body 20, characterized in that the underside 21 of the mold body 20 has an n-fold axis of symmetry along the z-axis, where n > 3. 3. The top surface 22 of the mold body 20 has at least one vertex 26 in the z-direction.

[0118] Figure 9: Top view of a self-adhesive cleaning agent mold body according to a sixth embodiment. The mold body (20) has a first plane of symmetry (71) perpendicular to the planar underside (21) in the yz direction. Furthermore, the mold body (20) has a second plane of symmetry (72) perpendicular to the planar underside (21) in the xz direction.

[0119] Figure 10a: The self-adhesive cleaning agent mold body according to the sixth embodiment in a side view. This shows a mold body (20) comprising a planar underside (21) which forms a plane in the xy direction and an upper side (22); and an adhesion layer (31) which is arranged at least on the planar underside (21) of the mold body (20). The mold body (20) has a first plane of symmetry (71) perpendicular to the planar underside (21) in the yz direction. Furthermore, the mold body (20) has a second plane of symmetry (72) perpendicular to the planar underside (21) in the xz direction. 2024PF00295

[0120] Figure 10b: The self-adhesive cleaning agent mold according to the sixth embodiment, showing the flushing water flow. In contrast to prior art solutions, the inventive solution of this embodiment takes into account the specific characteristics of rimless toilets. Rimless toilets are toilets designed without a traditional flushing rim. These toilets have a smooth, rimless inner bowl, which facilitates cleaning because less dirt and germs can accumulate in hard-to-reach areas.

[0121] The absence of a rim also allows for a more effective flush, as the water flows directly into the drain without being interrupted by a rim. Rimless toilets have become popular in some countries because they are considered more hygienic and easier to clean.

[0122] In a rimless toilet, the water flow differs from that of conventional toilets with a rim. A rimless toilet has no rim, meaning the water flows directly from one or more jets into the toilet bowl. This design is intended to help distribute the water more effectively across the entire inner surface of the toilet bowl.

[0123] The inventive form of the self-adhesive cleaning agent mold takes into account the different flow pattern in such a way that the design of Rimfree toilets is geared towards effectively directing the water flow over the entire inner surface of the toilet bowl.

[0124] The symmetry according to the invention exhibits a preferred flow pattern across the cleaning agent mold, resulting in improved rinsing behavior and adhesion. Due to the higher rotational symmetry of the underside of the cleaning agent mold, a lateral water flow can contribute to distributing the rinse water evenly around the entire body, leading to uniform cleaning. In particular, this contributes to creating efficient flow dynamics when the water flows across the entire body. This uniform flow pattern is favored by the mirror-symmetrical geometry of the body. This can improve cleaning efficiency because the water is guided evenly across the entire mold. In particular, turbulence is minimized because the flow around the body is more uniform.Turbulence can prevent dirt particles from being effectively rinsed away, especially in the case of a lateral water flow as is the case with Rimfree toilets. 2024PF00295.

[0125] Overall, the mirror-symmetrical geometry according to the invention thus shows a preferred flow pattern over the cleaning agent mold.

[0126] Figure 11a: Packaging unit with a cleaning agent molded body according to the first embodiment. Figure 11b: Packaging unit with a cleaning agent molded body according to the second embodiment.

[0127] The solution according to the invention is more ecologically sustainable than solutions known from the prior art, since elaborate packaging can be dispensed with. The first and second adhesion layers are at least partially unbonded, so that a certain distance exists between them. This allows the second adhesion layer to be detached from the top of the molded body shortly after rinsing, and the fragrances and cleaning agents contained in the molded body to be released.

[0128] Unlike in the prior art, outer packaging for the individual cleaning agent components 10, 12 can be completely dispensed with. In particular, the entire packaging unit 5 can be manufactured essentially free of fossil-based synthetic polymer materials.

[0129] The design of the cleaning agent mold (consisting of a molded body and an adhesive layer) and the shape of the body with a planar bottom and a non-planar top are particularly well-suited for the packaging unit described here, which contains multiple molded bodies and requires no outer packaging. A body with a flat bottom and a non-planar top, especially one with a vertex, improves stackability. The flat bottom of the body provides a stable contact surface on another surface. This enables reliable and stable stacking of multiple bodies without them easily slipping or tipping over. The flat bottom also optimizes the use of available stacking space. There are no irregular bulges or unevenness that could inefficiently utilize the space between stacked bodies.

[0130] The apex on the top surface helps the uppermost bodies adhere better to each other in a stack. This reduces the risk of the upper bodies slipping or shifting. 2024PF00295

[0131] Advantages have been particularly evident in packaging units containing cleaning agent molded bodies, which feature a water-soluble second adhesive layer applied to the non-planar upper surface of the molded body. This reduces the risk of the upper bodies slipping or shifting.

[0132] The characteristics of the aspects described above are not limited to these, but can be combined with each other in a meaningful way.

[0133] In connection with the various aspects of the invention described above, where an adhesive layer is described which is arranged at least on the planar underside of the molded body, this means that it covers the planar underside at least partially, preferably substantially completely. This does not preclude the adhesive layer from also projecting beyond the edge of the underside or from other parts, such as the top side of the molded body, being covered with the same or a further adhesive layer.

[0134] In connection with the various aspects of the invention described above, where an adhesive layer is described which is arranged at least on the top surface of the molded body, this means that it covers the top surface at least partially, preferably substantially completely. This does not preclude the adhesive layer from also projecting beyond the edge of the top surface or from other parts, such as the underside of the molded body, being covered with the same or a further adhesive layer.

[0135] The following compositions were used for the cleaning agent mold body:

[0136] 2024PF00295

[0137] The compositions were coated with a water-soluble film as required.

[0138] Compositions E1, E2, E3, and C1 were formed into bodies with a planar underside. Unlike C1, E1, E2, and E3 did not require an additional adhesive layer (coating the underside with an epoxy adhesive). Instead, the planar underside was covered with a water-soluble film approximately 25 µm thick.

[0139] However, it has now been surprisingly discovered that the cleaning agent mold adheres sufficiently well to the toilet surface even without an additional adhesive layer, even if the mold is designed to be non-adhesive. 2024PF00295

[0140] Reference numeral list for the first embodiment:

[0141] 10 Self-adhesive cleaning agent mold bodies

[0142] 20 molded bodies

[0143] 21 Underside of molded body

[0144] 22 Top side of molded body

[0145] 26 Vertex Shape Body

[0146] 31. Adhesive layer

[0147] 40 wet surface of sanitary fixture

[0148] Reference numeral list for the second embodiment:

[0149] 10 Self-adhesive cleaning agent mold bodies

[0150] 20 molded bodies

[0151] 21 Underside of molded body

[0152] 22 Top side of molded body

[0153] 26 Vertex Shape Body

[0154] 31. Adhesive layer

[0155] 40 wet surface of sanitary fixture

[0156] Reference numeral list for the third embodiment:

[0157] 10 Self-adhesive cleaning agent mold bodies

[0158] 20 molded bodies

[0159] 21 Underside of molded body

[0160] 22 Top side of molded body

[0161] 25 first turning point

[0162] 26 Vertex Shape Body

[0163] 26 second turning point

[0164] 31. Adhesive layer

[0165] 40 wet surface of sanitary fixture

[0166] Reference numeral list for the fourth embodiment:

[0167] 10 Self-adhesive cleaning agent mold bodies

[0168] 20 molded bodies

[0169] 21 Underside of molded body

[0170] 22 Top side of molded body

[0171] 31. Adhesive layer that essentially completely surrounds the mold body

[0172] 40 sanitary surface 2024PF00295

[0173] Reference numeral list for the fifth embodiment:

[0174] Reference numeral list for the fifth embodiment:

[0175] 10 Self-adhesive cleaning agent mold bodies

[0176] 20 molded bodies

[0177] 21 Underside of molded body

[0178] 22 Top side of molded body

[0179] 31. Adhesive layer

[0180] 40 sanitary surfaces

[0181] 70 n-fold rotary axis

[0182] Reference numeral list for the sixth embodiment:

[0183] 10 Self-adhesive cleaning agent mold bodies

[0184] 20 molded bodies

[0185] 21 Underside of molded body

[0186] 22 Top side of molded body

[0187] 31. Adhesive layer

[0188] 40 sanitary surfaces

[0189] 71 Plane of symmetry in the yz direction

[0190] 72 Plane of symmetry in the xz direction

[0191] Reference numeral list for the seventh embodiment:

[0192] 5 packaging units

[0193] 10 Self-adhesive cleaning agent mold body according to one embodiment

[0194] 12 Self-adhesive cleaning agent mold body according to a further embodiment

[0195] 50 packaging units

[0196] 55 lids

Claims

2024PF00295 Patent claims 1. Self-adhesive cleaning agent mold body (10) comprising: a mold body having a planar underside (21) and a top side (22); and an adhesion layer (31) which is arranged at least on the planar underside (21) of the mold body (20), wherein the adhesion layer (31) is formed from a water-soluble material and only becomes self-adhesive upon contact with a moistened surface (40), characterized in that the mold body is not independently adhesive on a surface.

2. Self-adhesive cleaning agent mold body (10) according to claim 1 wherein the mold body does not contain an adhesion promoter in its composition and / or does not contain any further adhesion layers or adhesive coatings.

3. Self-adhesive cleaning agent mold body (10) according to claims 1 to 2, wherein the adhesion layer (31) is formed from PVOH and / or PVA.

4. Self-adhesive cleaning agent mold body (10) according to claims 1 to 4, wherein the top surface (22) of the mold body is non-planar.

5. Self-adhesive cleaning agent mold body (10) according to claim 5, wherein the top surface (22) of the mold body has at least one vertex (26).

6. Use of the self-adhesive cleaning agent mold (10), wherein the cleaning agent mold (10) is applied with the planar underside (21) to a moistened surface (40), in particular a sanitary surface.

7. Use of the self-adhesive cleaning agent mold body (10) in a rimless toilet.

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