EP3363339B1 - Preformed sanitary sealing corner and sanitary assembly - Google Patents

Description

The invention relates to a preformed sanitary sealing corner to integrate a sanitary object in a sanitary room, in particular a bathroom. The sanitary object is preferably a bath or shower tray or a tray support system for such a sanitary tub.

At the sealing of such a sanitary object very high demands are made to permanently and reliably avoid water leakage. Absolute watertightness must be guaranteed not only immediately after installation, but also over the long term. A particular challenge is precisely in corners to allow an exact structural adaptation to radii of curvature and unevenness and on the other hand to avoid leaks in subsequent shifts, for example due to a setting behavior.

To seal sanitary objects against wall corners, a simple sealing tape can be used, as can be seen from the DE 100 31 214 A1 is known. However, precise adaptation to different building geometries is difficult, so that correspondingly a reliable sealing is difficult and results in a complex handling. In particular, there is a risk that at corners and transitions only an insufficient seal.

From the DE 299 05 152 U1 preformed sanitary sealing corners are known with which a sanitary object in the form of a bath or shower tray can be connected to an adjacent floor and wall surface.

However, the present invention relates specifically to a preformed sanitary sealing corner having a first wall portion, a second wall portion angled relative to the first wall portion, and a lower connecting portion, the connecting portion having a first leg below the first wall portion and a second leg below the second Wall portion is arranged, wherein the first wall portion and the first leg on the one hand and the second wall portion and the second leg on the other hand each aligned with an offset on a shoulder portion parallel to each other and wherein the wall portions and the connecting portion have a cover material.

A generic preformed sanitary sealing corner, from which the present invention proceeds, is made EP 2 774 516 A2 ( Fig. 1 ) known. The sealing corner has a shoulder portion to bridge a distance between an edge of a sanitary tub and the adjacent wall corner can.

More preformed, largely rigid sanitary sealing corners are made WO 2010/129043 A2 . CH 704 155 B1 and EP 0 281 403 A2 known. In the known embodiments, there is the disadvantage that the shape is precisely predetermined and can be adapted only to a limited extent, whereby a subsequent setting behavior due to the limited mobility can lead to leaks.

GB 2 445 917 A discloses a preformed sanitary sealing corner according to the preamble of claim 1.

Against this background, the present invention has the object, at least partially overcome the disadvantages of the prior art and to provide a preformed sanitary sealing corner, which is characterized on the one hand by a very good handling and on the other hand, a very reliable seal.

The object of the invention and solution of the problem is a preformed sanitary sealing corner according to claim 1.

Starting from a generic embodiment, it is accordingly provided according to the invention that expansion zones are formed at the shoulder sections and at the bend between the wall sections, at which zones the cover material is interrupted at least in sections.

The subject of the invention is also a sanitary arrangement with a sanitary object in the form of a sanitary tub or a tub support system, with a wall corner and with a preformed sanitary sealing corner, which is designed as described above. The sanitary sealing corner is sealingly attached to the connecting portion at a corner of the sanitary object and with the wall portions at the wall corner.

At the lateral edges of the sealing corner conventional sealing tapes can be attached, which then seal the sanitary object against the respectively adjacent wall outside the corner. A closed frame of sealing material is usually formed around the circumference of the sanitary object, which comprises at least one preformed sanitary sealing corner according to the invention.

Due to the inventive design of the preformed sanitary sealing corner can be bridged on the one hand by means of the paragraph section, a lateral gap between the sanitary object and the adjacent wall corner. On the other hand, can be made by the expansion zones during assembly even shape adjustments without a secure seal is compromised. If, for example, the corner of the sanitary object is provided with a radius, then the resulting dimensional deviations can be effectively balanced by the expansion zones. The same applies to uneven or not exactly right-angled wall surfaces. Due to the mobility of the expansion zones can be ensured that the wall sections of the preformed sanitary sealing corner can be applied without kinks flat against the wall corner and especially glued to the wall corner, in which case compensatory movements or displacement after assembly can be absorbed by the expansion zones.

Preferably, a layer of extensible plastic is provided at least at the expansion zones. In particular, the expansion zones have a lower expansion stiffness than the connecting section and the wall sections of the sanitary sealing corner.

The stretchable plastic can be provided in particular as a film or produced by injection molding.

Layers of plastic always exhibit an elastic and a plastic portion when stretched in practice, whereby the plastic can then return to the elastic portion after stretching.

In principle, it may be sufficient in the context of the invention if the expansion zones are readily stretchable, but have only low elastic properties.

Suitable, for example, a layer of foamed plastic, which preferably has closed cells. By a foam structure is achieved by the lattice-like arrangement of the pores in the broadest sense, a certain extensibility and elasticity, which also comparatively only with respect to a plastic deformation by the foaming low tensile forces are necessary. In particular, a foamed polyolefin such as polyethylene or polypropylene may be provided. The density may be, for example, between 0.3 and 0.8 g / cm ³ .

Additionally or alternatively, however, the plastic may also have elastic properties, with thermoplastic elastomers being particularly preferably used. Suitable are, for example, thermoplastic elastomers based on olefins (TPO), thermoplastic elastomers based on styrene (TPS), thermoplastic elastomers based on polyurethane (TPU) and thermoplastic elastomers based on crosslinked rubber (TPV) Mixtures of the materials mentioned come into consideration. Corresponding materials are for example in the " Saechtling Plastic Paperback ", 31st Edition, 2013 described.

For the detailed design of the preformed sanitary sealing corner arise within the scope of the invention, various possibilities.

Thus, the layer of stretchable plastic, for example, be formed by an at least stretchable and optionally elastically stretchable film. Such a film may also extend over the entire surface of the wall sections and the connecting portion and be there at least on one side with the cover material. The film then forms a continuous carrier material, wherein then portions of the cover material are placed on the film such that there are at least partially interruptions at the expansion zones.

According to an alternative embodiment of the invention, the wall sections and the connecting section are formed from separate material blanks, which are then connected by the stretchable plastic. The elastic Plastic, for example, be molded onto the material blanks. The two wall sections and the connecting section are then cut to the desired size and inserted at a distance from one another into a mold, in which case the plastic forming the expansion zones is injected and materially bonded to the material blanks. By means of such an injection molding process, the elastic expansion zones are simultaneously formed and the structure of the preformed sanitary sealing corner is determined. In the case of injection molding, the plastic can optionally also be foamed.

In an alternative embodiment of the expandable plastic is not molded onto the material blanks, but provided in the form of a film blank of strips or as otherwise foil blank. The film blank is then pressed with the material blanks, in particular hot pressed. Particularly preferably, the sheet of thermoplastic material is at least partially melted, resulting in an intimate cohesive connection with the material blanks by the action of pressure and temperature during the pressing. Alternatively, film strips or a different type of film blank to form the stretchable plastic can also be glued to the material blanks.

The material blanks can be formed independently of the exact manufacturing method and the further embodiment of the sanitary sealing corner of conventional sealing materials and strips.

According to a first variant, the covering material is completely interrupted at the expansion zones. In principle, it may be sufficient if sections of the cover material are arranged at the expansion zones with a small distance or even on impact. In the exercise of traction For example, the expansion zone may then expand, forming a compensating gap even upon initial placement on impact.

Preferably, however, a range of, for example, between 2 and 20 mm is released even before a first elongation at the expansion zones in order to be able to provide sufficient material for expansion.

According to an alternative variant of the invention, the covering material is not completely interrupted at the expansion zones or at at least one of the expansion zones, but provided with a perforation. The perforation causes the covering material in the expansion zones to be more easily deformed and possibly even torn. However, it is important to ensure that the stretchable plastic provided there is always maintained at the usually expected strains.

As a cover material, a textile is particularly preferably provided, suitable as textile nonwovens, fabrics and knitted fabrics into consideration. In practice, nonwovens are particularly preferred because, on the one hand, they cause reinforcement and, on the other hand, they can be bonded well due to the fibrous structure.

If the expansion zone is formed by a film which also extends over the entire surface of the edge sections and the connecting section, then this film is then at least on one side, preferably on both sides, covered with the cover material, ie in particular nonwoven fabric. The connection can be made in different ways, in particular by adhesive.

If the expansion zone forming stretchable plastic is provided only in some areas and in particular molded or pressed as a foil strip or glued, the two wall sections and the connecting portion usually have a separate carrier layer on which at least on one side the cover material is arranged. As a carrier layer, for example, a laminated or extruded onto the outer layer film comes into consideration. The carrier layer can also be arranged as a core layer between two cover layers.

The preformed sanitary sealing corner is connected, on the one hand, to the corner of the sanitary object and, on the other hand, to the wall corner, with bonding preferably taking place. A corresponding adhesive can be applied to the cover material only during assembly, with straight nonwoven fabric forms a good basis for the inclusion of adhesive. Alternatively, the cover material may be at least partially already provided with an adhesive. The adhesive may be provided, for example, as a coating, adhesive bead, adhesive strip or double-sided adhesive tape. Conveniently, in the preformed sanitary sealing corner of the adhesive is first covered with a release paper or the like, wherein such a release paper is removed only immediately during assembly.

For connection to a wall corner, the adhesive is expediently arranged on the outside at the two wall sections of the preformed sanitary sealing corner, whereby, for example, a connection with tile adhesive or the like can take place internally when the wall sections of the sanitary sealing corner are subsequently tiled.

The two legs of the lower connecting portion of the sanitary sealing corner can be provided both in the direction of the inside and in the direction of the outside with adhesive. An adhesion of the inside, for example, when the connecting portion directly on the outer Scope of a sanitary object is attached in the form of a sanitary tub. If, in contrast, the sealing with the sanitary sealing corner takes place in relation to a bath support system, the legs can, for example, also be glued on their outer side to a gutter extending below the accommodated sanitary bath.

The offset at the shoulder portions may be, for example, between 2 mm and 12 mm in order to bridge a correspondingly large gap between the sanitary object and the adjacent wall corner can. According to the invention, a good adaptation is possible on the basis of a given offset due to the extensibility of the corresponding expansion zone. The offset preferably forms a horizontal or approximately horizontal step, which bridges the parallel offset between the wall sections and the respectively associated legs of the connecting section. While the paragraph sections extend horizontally or approximately horizontally, in the preformed sanitary sealing corner in the usual mounting situation, the two wall sections and the two legs of the connecting portion are vertically aligned and arranged in two mutually perpendicular horizontal directions over the corner.

The expansion zone formed at the bend between the wall sections typically has a width between 1 mm and 20 mm. With an increasing size of the expansion zone, a better mobility and extensibility is achieved, so that correspondingly large deviations can be compensated even with an increasingly large expansion zone. On the other hand, the material is less likely to stick to the expansion zones, which is why they should not be too large.

The expansion zones formed between the connecting portion and the wall portions may extend beyond the heel portion, ie, the horizontal or substantially horizontal area, and thus each also extend in part in the plane of the associated wall portion or the associated leg of the connecting portion, thereby also a weitreichender Strain compensation in the vertical direction is possible.

The expansion zone may in the context of the invention, for example, have a thickness between 150 microns and 1 mm, in particular between 200 microns and 800 microns. At the wall sections and at the connecting section, the thickness is, for example, between 200 μm and 1.2 mm, in particular between 300 μm and 1 mm.

Fig. 1

eine vorgeformte Sanitärdichtecke,

Fig. 2

eine Sanitäranordnung mit einem Sanitärobjekt in Form einer Duschwanne, einer Wandecke und der Sanitärdichtecke gemäß der Fig. 1 in einem Schnitt,

Fig. 3 und 4

alternative Ausgestaltungen der Sanitärdichtecke in einer Schnittdarstellung entsprechend der Fig. 2,

Fig. 5

eine alternative Ausgestaltung der vorgeformten Sanitärdichtecke.

The invention will be explained in the following with reference to a drawing showing only one exemplary embodiment. Show it:

Fig. 1

a preformed sanitary sealing corner,

Fig. 2

a sanitary arrangement with a sanitary object in the form of a shower tray, a wall corner and the sanitary sealing corner according to the Fig. 1 in a cut,

3 and 4

Alternative embodiments of the sanitary sealing corner in a sectional view according to the Fig. 2 .

Fig. 5

an alternative embodiment of the preformed sanitary sealing corner.

The Fig. 1 shows a sanitary sealing corner according to the invention for the connection of a corner of a sanitary object to a wall corner. The preformed sanitary sealing corner has a first wall portion 1, a relative to the first wall portion 1 angled second wall portion 2 and a lower connecting portion 3.

The lower connecting portion 3 extends with a first leg 3a below the first connecting portion 1 and with a second leg 3b below the second connecting portion 2. Between the first wall portion 1 and the first leg 3a and the second wall portion 2 and the second leg 3b is in each case one Section 4 provided, which runs horizontally. The first wall section 1 and the first leg 3a on the one hand and the second wall section 2 and the second leg 3b on the other hand are each aligned parallel to each other, but offset by the offset on the shoulder portion 4 to each other. The offset may for example be between 2 mm and 12 mm.

As below in relation to the Fig. 2 explained further, can be bridged with the paragraph section 4, a distance between an edge of the sanitary object and an adjacent wall surface 5 of the wall corner.

The two wall sections 1, 2 and the lower connecting section 3 are stretch-resistant and each have a covering material 6. The cover material 6 is preferably a textile selected from the group nonwoven fabric, woven fabric and knitted fabric, wherein a nonwoven fabric is preferred as the cover material 6. Due to the structure of the cover material 6, the preformed sanitary sealing corner is stabilized, whereby a good bonding through the fiber structure of the textile is made possible.

According to the invention, expansion zones 7a, 7b are formed on the shoulder sections 4 and on the bend between the wall sections, on which the Cover material 6 at least in sections, in the embodiment of Fig. 1 is completely interrupted. Due to the expansion zones 7a, 7b, a far-reaching adaptation to varying gap dimensions, unevenness or the like is possible despite the predetermined shape of the preformed sanitary sealing corner.

In the context of the invention, the expansion zones 7a, 7b are at least extensible, wherein a certain elastic recovery is preferred.

At the expansion zones 7a, 7b, a layer of stretchable plastic is provided, which according to the Fig. 2 to 4 can be formed in different ways.

The Fig. 2 shows a section through the preformed sanitary sealing corner according to the Fig. 1 in a possible installation situation. The Indian Fig. 2 shown first wall portion 1 is connected with adhesive 8 on the outside of the sanitary sealing corner with the adjacent wall surface 5, while connected via the paragraph section 4 below subsequent first leg 3a toward the inside of the sanitary sealing corner also by adhesive 8 with a sanitary tub in the form of a shower tray is.

In the embodiment according to the Fig. 2 the layer of extensible plastic, which also forms the expansion zone, consists of a film 10. The film 10 may be formed and / or foamed, for example, from a thermoplastic elastomer. According to the embodiment of the Fig. 2 the film 10 is also the entire surface of the wall portion 1, 2 and the connecting portion 3 is present and there at least on one side, in the embodiment on both sides with the cover material 6 occupied.

The per se stretchable, preferably elastically extensible film is then stabilized at the wall sections 1, 2 and at the connecting portion 3 by the cover material 6, so that only at the expansion zones 7a, 7b results in a substantial extensibility of the entire preformed sanitary sealing corner.

The adhesive 8 can either be applied during assembly or be arranged on the cover material 6 as a coating, adhesive bead, adhesive strip or double-sided adhesive tape. If the adhesive 8 is already kept ready at the sanitary sealing corner, then first a cover by a release paper or the like is expedient.

The Fig. 3 shows an alternative embodiment, for better representation, only the sanitary sealing corner is shown in a section. The attachment to the associated wall surface 5 and the shower tray 9 can be effected by means of adhesive 8 as described above.

The embodiment according to the Fig. 3 differs from the variant described above in that the plastic forming the expansion zones 7a, 7b is provided only directly in the region of the respective expansion zone 7a, 7b. While the wall sections 1, 2 and the lower connecting section 3 is formed from a conventional, planar sealing strip with a core layer 11 and cover material applied on both sides, the stretchable plastic forming the expansion zones 7a, 7b is attached to the two wall sections 1, 2 and the lower connecting section 3 molded, wherein the two wall sections 1, 2 and the connecting portion 3 are provided as separate material blanks. These separate material blanks can for example be introduced in the desired orientation in a mold, in which case the stretchable plastic is injected. The Expansion zones 7a, 7b then also form the structural connection between the individual material blanks.

The Fig. 4 shows a further modification in which the expansion zone 7a. 7b of film strips 12 are formed. The film strips 12 may be placed in the desired shape and arrangement between the separate material blanks and then pressed under the action of pressure and temperature. This results in spite of the multi-piece design a reliable cohesive connection when the foil strips 12 and / or the associated portions of the cover material 6 are at least melted.

According to the Fig. 1 all expansion zones 7a, 7b have a width between 1 mm and 20 mm, wherein no covering material is present at the expansion zones 7a, 7b.

The Fig. 5 starting from this, an alternative embodiment in which, by way of example, the expansion zone 7b formed at the bend between the wall sections 1, 2 is only partially interrupted by the covering material 6. This results in a perforation with individual webs 13 of the cover material 6, but also this expansion zone 7b is due to the thin webs in comparison to the delimiting wall sections 1, 2 is well stretchable.

In the figures, it is shown by way of example that the expansion zones 7a formed between the connecting section 3 and the wall sections 1, 2 may extend beyond the horizontally extending step section 4, wherein the expansion zone also immediately following the first wall section 1 and the second wall section 2 in the vertical direction runs. As a result, a particularly good adaptation along the vertical direction can be achieved.

At the expansion zones 7a, 7b, the thickness can be, for example, between 200 μm and 800 μm. At the wall portions 1, 2 and at the connecting portion 3, the thickness is for example between 300 microns and 1.2 mm.

Claims (17)

1. A preformed sanitary sealing corner, for the connection of a corner of a sanitary object to a wall corner, comprising a first wall section (1), a second wall section (2) set at an angle with respect to the first section (1) and a lower connecting section (3), which is arranged with a first leg (3a) below the first wall section (1) and with a second leg (3b) below the second wall section (2), wherein the first wall section (1) and the first leg (3a) on the one hand and the second wall section (2) and the second leg (3b) on the other hand are aligned parallel to one another in each case with an offset at a stepped section (4) and wherein the wall sections (1, 2) and the connecting section (3) comprising a covering material (6), wherein stretching zones (7a, 7b) are formed at the stepped sections (4), at which stretching zones the covering material (6) is interrupted at least in sections, characterised in that
   stretching zones (7a, 7b) are formed at the angled portion between the wall sections (1, 2), at which stretching zones the covering material (6) is interrupted at least in sections.
2. The preformed sanitary sealing corner according to claim 1, characterised in that a layer of a stretchable plastic is provided at least at the stretching zones (7a, 7b).
3. The preformed sanitary sealing corner according to claim 2, characterised in that the layer of stretchable plastic material comprises a film (10), wherein the material of the film (10) is formed from thermoplastic elastomer and/or foamed.
4. The preformed sanitary sealing corner according to claim 3, characterised in that the film (10) extends over the entire surface of the wall sections (1, 2) and the connecting section (3) and is covered there with the covering material (6) at least on one side.
5. The preformed sanitary sealing corner according to claim 2 or 3, characterised in that the wall sections (1, 2) and the connecting section (3) are formed from separate material blanks, which are connected by the stretchable plastics material.
6. The preformed sanitary sealing corner according to claim 5, characterised in that the stretchable plastic material is injection moulded onto the material blanks.
7. The preformed sanitary sealing corner according to claim 3 and 5, characterised in that the film is present as a film blank and is pressed together with the material blanks.
8. The preformed sanitary sealing corner according to any one of claims 1 to 7, characterised in that the covering material (6) is completely interrupted at the stretching zone (7a, 7b).
9. The preformed sanitary sealing corner according to any one of claims 1 to 4, characterised in that the covering material (6) is perforated at the stretching zones (7a, 7b).
10. The preformed sanitary sealing corner according to any one of claims 1 to 9, characterised in that the covering material (6) is formed from a textile selected from the group non-woven, woven and knitted fabrics.
11. The preformed sanitary sealing corner according to any one of claims 1 to 10, characterised in that the covering material (6) is provided at least in sections with an adhesive (8).
12. The preformed sanitary sealing corner according to any one of claims 1 to 11, characterised in that the covering material (6) on the wall sections (1, 2) and the connecting section (3) is provided on both surfaces lying opposite one another.
13. The preformed sanitary sealing corner according to any one of claims 1 to 12, characterised in that the offset at the stepped sections (4) amounts to between 2 mm and 12 mm.
14. The preformed sanitary sealing corner according to any one of claims 1 to 13, characterised in that the stretching zone (7b) formed at the angled portion between the wall sections (1, 2) has a width between 1 mm and 20 mm.
15. The preformed sanitary sealing corner according to any one of claims 1 to 14, characterised in that the stretching zone (7a) formed between the connecting section (3) and the wall sections (1, 2) extends beyond the stepped section (4).
16. The preformed sanitary sealing corner according to any one of claims 1 to 15, characterised in that the stretching zones (7a, 7b) each have a thickness between 200 µm and 800 µm and/or the wall sections (1, 2) and the connecting section (3) have a thickness between 300 µm and 1.2 mm.
17. A sanitary arrangement with a sanitary object in the form of a sanitary bathtub or bathtub support, with a wall corner and a preformed sanitary sealing corner according to any one of claims 1 to 16, wherein the sanitary sealing corner is fastened to the connecting section (3) at a corner of the sanitary object and to the wall sections (1, 2) at the wall corner in a sealing manner.

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