• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a sanitary installation product with a base body (1) made of sheet metal and with an enamel coating (2) applied in sections to the base body (1). According to the invention, there is a metallic cover coating (5) which is only applied to at least one section of the base body (1) that is not provided with the enamel (2). The invention also relates to a method for producing the sanitary installation product.
    公开号:CH717743A2
    申请号:CH00750/21
    申请日:2021-06-28
    公开日:2022-02-15
    发明作者:
    申请人:Kaldewei Franz Gmbh & Co；
    IPC主号:
    专利说明:

    The invention relates to a sanitary installation product with a base body made of sheet metal and with an enamel applied in sections on the base body.
    Sanitary installation products in the form of bathtubs, shower trays, shower surfaces and washbasins made of steel enamel are known from practice and are characterized by exceptional durability, resilience and a high-quality appearance.
    Components of shower trays, shower areas, bathtubs and sinks such as drain and overflow covers can be made of steel enamel, so that it can then also be sanitary installation products within the meaning of the present invention.
    [0004] Sanitary installation products made of steel enamel are characterized by high scratch, abrasion and impact resistance. Steel enamel is also hygienic and dirt-repellent and can be easily cleaned. After all, the high-quality appearance of steel enamel is retained over the long term, with no color or surface changes occurring even under the influence of chemical substances and heat.
    Usually, all sections of the base body of the sanitary installation product that are visible when installed are provided with a high-quality, visually appealing enamel coating. At least one basic enamel coating can be expedient on sections of the base body that are not visible in the assembled state, in order to protect the sheet metal forming the base body in particular from corrosion, even if certain optical impairments can be tolerated there.
    At least in the visible areas, the enamel forms a closed surface and thus ensures optimal protection of the sheet metal.
    Sanitary installation products made of steel enamel have proven themselves in practice and are valued for their advantageous properties. Nevertheless, there is a need to improve sanitary installation products made of steel enamel with regard to the production costs, the flexibility in production and their usage properties.
    [0008] For example, there is a risk of the edges of an enamelled sheet metal flaking off. For example, DE 10 2011 000 275 C5 deals with the problem that, in the case of a cover for a sanitary tub, a bent and otherwise exposed edge can be damaged by severe mechanical stress, for example if the cover falls down. It also plays a role that the surface geometry of the lateral edges of the metal sheet in particular results in a thickening of the enamelling, so that in addition to the exposed position at one edge, the risk of the vitreous material bursting can be increased. According to DE 10 2011 000 275 C5, various measures for protecting such an edge are described, although at least a slightly increased effort in sheet metal forming during production has to be accepted.
    As previously described, the enamel forms a protection of the underlying metal sheet. Against this background, openings in the base body, such as drain holes, overflow holes, tap holes or holes for fittings, are usually produced in the base body before it is provided with the enamel. The edges of corresponding breakthroughs are then also provided with the enamel and protected.
    In principle, however, it may also be desirable to provide the base body with openings after the application of the enamel and/or to trim the edges, for example in order to make the manufacturing process more flexible or to make modifications later. When openings are produced in this way or when an edge is trimmed, the metal sheet is also exposed at the cut edge, which is then initially not protected against corrosion or other impairments.
    [0011] For example, a cutting of the edge of an already enamelled base body made of sheet metal, which has been known for a long time from DE 26 56 434 B2, is taken up again in DE 10 2018 132 073 A1. So that the sheet metal does not corrode at the cut edge, an enamel, for example a dry enamel, can be applied subsequently. Alternatively, a paint, a sealant or an adhesive can also be considered. Sealants or adhesives are possible if the cut edge is not visible when installed. A varnish or a dry enamel can represent weak points in comparison to the baked enamel that adheres to the surface.
    Against this background, the present invention is based on the object of achieving improved protection for a sanitary installation product of the generic type on at least one section of the base body that is not provided with the enamel coating, with a particularly high-quality and visually appealing surface also being formed in addition to the protection . Furthermore, a method for producing a corresponding sanitary installation product is to be specified.
    The object of the invention and the solution to the problem is a sanitary installation product with a base body made of sheet metal and with enamel applied in sections to the base body, which is characterized in that a metallic top coating is provided which is only provided on at least one of the parts that is not provided with the enamel Section of the body is applied.
    The base body is preferably deformed to form, for example, a sanitary installation product in the form of a shower tray, a shower surface, a bathtub, a washbasin, a urinal or a component thereof. Components are, in particular, covers for drains and overflows, inspection flaps or the like.
    The present invention is based on the finding that the metal sheet of the base body can be advantageously protected by a metallic top coating at points which are still exposed or exposed after the actual enamelling. The metallic top coating is then only present in places that are not provided with the enamelling.
    As also known in principle from the prior art, the enamel can be formed in one layer in one firing process or in multiple layers in one firing process or several firing processes, which is of secondary importance for the present invention.
    In a particularly advantageous manner, the top coat can be electroplated, d. H. be applied electrochemically. By selecting a suitable electrolyte liquid, exposure time, voltage and current, the thickness and quality of the metallic top coating can be varied and adjusted according to specifications.
    However, the invention is not limited to the preferred galvanic formation of the top coating with an electrolytic liquid. In principle, other types of deposition are not excluded, whereby, for example, in the case of deposition from a gas phase or a plasma, metal ions or charged metal particles can be applied in a targeted manner to the at least one usually electrically conductive section not provided with the enamel and form a durable top coat.
    The metallic top coating can in particular be formed from chromium, so that the corresponding section not provided with the enamel is chromium-plated. The metallic top coating usually has a thickness of at least 0.1 μm. A high-quality, appealing, shiny surface and good protection can, for example, be produced with a comparatively thin bright chrome plating with a typical thickness of 0.2 µm to 0.5 µm. However, larger layer thicknesses can also be deposited without further ado.
    In principle, however, other metals can also be used for the top coating.
    A steel sheet is usually used as sheet metal for the formation of the sanitary installation product, which on the one hand can be easily formed and on the other hand can be easily provided with an enamel coating. In order to improve the corrosion resistance, an undercoating, particularly a metallic undercoating, may be applied to the respective portions not provided with the enamel coating before the topcoating is applied. For example, corresponding points can also be provided with a nickel layer, in particular using electrochemical methods, which on the one hand forms a closed and preferably crack-free surface and on the other hand can contribute to improved adhesion of chromium.
    If such a metallic base coating is also preferably applied after the actual enamelling of the base body, it is particularly preferably within the scope of the invention only on the at least one section of the base body not provided with the enamelling.
    Depending on the combination of materials, the base coating described is only optional, so that direct application of the metallic top coating to the metallic base body is also possible.
    Furthermore, additional intermediate layers can also be provided between the base coating and the top coating on the one hand and/or between the base coating and the metal sheet of the base body. For example, an intermediate layer of copper can be provided between the metal sheet of the base body and the base coating, in particular also nickel, in order to provide a surface that is as evenly conductive and flat as possible for the application of the base coating and the top coating.
    In principle, the metallic top coating can be provided at different points of the sanitary installation product.
    According to a first variant, the metallic cover coating is arranged on an edge of the metal sheet. This can be an end side edge of the metal sheet or the edge can be an opening, an incision or the like.
    During manufacture, the metal sheet to form the base body is typically first provided in the appropriate size and then optionally formed and trimmed before the enamel is applied. Usually, the enamel is then also on the side edges of the sheet metal, regardless of whether the corresponding side edges run straight out, are folded over or are angled or shaped in some other way. If the base body is then trimmed after the enamelling, for example according to DE 26 56 434 B2, a side edge is then formed after the trimming, at which the metal sheet is exposed on the front side. The corresponding edge or face of the metal sheet can then be provided with the metallic coating in the manner described and, in particular, with the metallic top coating in the form of chromium by electrochemical deposition.
    Instead of trimming using, for example, an angle grinder, a water jet, a laser or the like, the applied enamel can also be ground down on the corresponding side edge in order to expose the metal sheet there. If an undesired accumulation of the enamel is to be expected there due to the geometry, the metal sheet itself can also be ground off by, for example, 0.5 mm to 10 mm or otherwise removed with the enamel arranged on it.
    The side edge can also be located at an opening within the metal sheet, the opening being formed before the enamelling process and thus usually initially being provided with the enamelling. Even with such an opening, there can be an increased risk of mechanical damage to the enamelling, in particular if an angled area in the manner of a collar is provided at the opening. This applies in particular when the edges of the opening protrude from the adjacent areas and are therefore unprotected.
    Thus, in the case of a sanitary installation product in the form of a washbasin, the area around the opening can be drawn out conically or in the manner of a cylindrical pipe socket in the formation of an opening for the drain. In the case of a cone shape, conventional siphons or comparable processes can be easily attached using a suitable clamping arrangement. In the case of a cylindrical pipe socket, a drain pipe or a siphon can be connected directly, it being possible for the elements to be connected to be sealed radially on the outside.
    If the edge of the opening is exposed in the manner described, there is a risk of damage if the enamel is present there both during assembly and during use, so that according to the invention the enamel is removed there and instead the metallic top coating is used as protection is upset. As already described above, removal can also be carried out by machining methods, so that a particularly even and uniform edge of the top coating that has been applied uniformly then results. The corresponding edge is therefore also suitable as a contact surface for a seal when connecting with other elements. According to an alternative embodiment of the invention, an opening is produced in the metal sheet after the enamelling. Such an opening can be provided, for example, in order to subsequently form tap holes, overflow holes or the like. In the case of overflow holes, the position can also be freely varied afterwards.
    In the case of tap holes, it should be noted that, in practice, sinks must be provided without corresponding holes if the fittings are mounted on the wall. Furthermore, depending on the type of faucet with faucet and controls, between one and three holes may typically be necessary if the faucet is intended to be mounted on the washbasin itself.
    Corresponding considerations can also be transferred in the same way to other sanitary installation products such as bathtubs, for example, if functional elements are to be attached to openings in the base body there.
    Within the scope of the invention, the edge around such an opening can also be of high quality and protected by the metallic cover coating. It should be noted here that an electrochemical coating can be formed in a relatively simple manner both in an immersion operation and by brushing on using appropriate tools. The only important thing is that the base body can be contacted in a suitable manner in order to enable the necessary current flow for the electrolytic coating, with the metal sheet for contacting not being provided with the enamel or the enamel being removed at a non-visible point on the base body, for example will.
    [0035] For the enameling process, for example, tabs are often fastened to hidden places, on which the base body can be held or hung during the enameling process. Depending on how such tabs are clamped, they themselves are not provided with an enamel coating over their entire surface and can therefore be contacted conductively. Even if corresponding holding means in the form of tabs or the like, which are often fastened by spot welds, are subsequently removed, for example simply broken off, there are then bare spots on the metal sheet that can be used for contacting.
    In order to allow the necessary flow of current for the preferred galvanic generation of the metallic top coating, connection points for the electrical contact in the form of bolts, tabs or the like can also be deliberately arranged in the vicinity of the top coating to be applied, in particular on a rear side of the sanitary installation product.
    Additionally or alternatively, such points or elements for contacting can also be formed or coated from a conductive, in particular metallic material, with which the enamelling does not permanently bond during the firing process. After the firing process, these areas or elements are bare or the enamel can at least be easily removed there.
    According to a further variant of the invention, the metallic cover coating is arranged on one side of the metal sheet. A corresponding area of the sheet metal is then either not coated with the enamel or is subsequently uncovered.
    [0039] For example, the enamel can subsequently be precisely ground off on a visible surface of the metal sheet in order to expose the metal sheet and then to provide it with at least the metallic top coating and preferably before that with the metallic base coating. By means of the measures described, for example, an aesthetic design of the base body, the incorporation of logos, the marking of control surfaces, etc. is possible.
    In this context, it is pointed out that, despite the electrically conductive properties of the sheet metal, suitable sensors can be operated through the base body. Corresponding concepts are described in DE 10 2014 102 135 A1. Within the scope of the invention, control surfaces for corresponding sensor elements can thus also be emphasized by the metallic cover coating.
    [0041] According to a further aspect, the metallic cover coating can also be used to optically accentuate the base body. For example, the enamel coating initially present on a circumferential fold of the base body can be removed, for example ground off, with the metallic top coating then being applied there in the manner described.
    The invention also relates to a method for producing a sanitary installation product, which is designed in particular as described above, with a metallic base body made of preferably formed sheet metal being provided one after the other and provided with an enamel slip, with the An enamel coating is formed on the base body provided with a slip, and at least one section left out or exposed by the enamel coating is provided with a metallic top coating by electrochemical deposition.
    As already described above, after the enamelling has been produced, the base body can be trimmed at an area provided with the enamelling, as a result of which the base body is exposed at the cut edge and the cut edge as an exposed section is subsequently provided with the metallic top coating.
    [0044] It is also possible for the enamel to be removed from a side edge of the base body that is initially provided with the enamel, in particular by machining processes. However, removal by machining is not only possible very easily on side edges, but also on bends, protruding ribs and beads or the like. With suitable tools, however, sections in the surface can also be exposed by machining.
    [0045] If the sanitary product has a protruding embossing, particularly in an otherwise flat area, the initially applied enamel can also easily be removed there. The embossing can be implemented, for example, in the form of beads, ribs, geometric figures or the like. Other design elements such as ornaments and logos can also be created. According to a preferred development, starting from a surrounding flat area, the lines and surfaces forming the embossing can be embossed out of the surface by a uniform or approximately uniform amount, so that these lines and surfaces can then also be easily removed together, for example by a flat, flat machining tool, can be exposed. As also previously described, the metallic topcoat is then placed at the exposed locations on one side of the metal sheet.
    However, other methods are also possible in order to expose the metal sheet initially provided with the enamel coating. For example, a local removal of the enamel with a laser is also possible, in which case a very free form design is then also possible, for example for the production of letters and numbers, patterns, logos and other decorations. The sections thus formed that are no longer provided with the enamel coating are then provided with the top coating. Since a relatively high energy density is necessary for such a removal, it may also be expedient to locally preheat the corresponding part of the metal sheet in order to avoid excessive flaking off of enamel particles. Corresponding local heating can take place, for example, through contact heat and/or directed thermal radiation.
    As already described above, the corresponding section can already be left out during the enamelling. For example, it is possible to provide the base body with a covering mask when applying the enamel slip and optionally also during the firing process, which mask is then removed. Masks which are removed, for example decomposed, by the firing process also come into consideration.
    According to another embodiment it is provided that the metal cover coating is arranged on an edge and at least one adjoining side of the metal sheet. Accordingly, the metal top coating extends away from the corresponding edge on one side and preferably on both sides, so that overall a larger area is provided with the metal top coating. Such a configuration can be expedient, for example, when—as described above in connection with the metallic cover coating on only one edge—a cylindrical pipe socket is formed, which in particular extends downwards away from the adjoining areas. In the case of the pipe socket, not only the end face, but also the adjoining cylinder section on the inside and outside is not provided with the enamel, but instead with the metallic top coating, as a result of which various specific advantages can be achieved. Thus, the metallic top coating has a smaller thickness and, in particular, a smaller variation in thickness than the enamel, so that better dimensional accuracy can be achieved. If the cylinder section is used for a clamping fixation, no enamel can flake off there under the influence of force. Functional formations such as bores, corrugations, a thread or the like can also be formed on the cylinder section not provided with the enamelling, in which the comparatively thin metallic top coating can be easily applied over the entire surface and does not impair the function.
    Within the scope of all variants, it can be useful to grind, smooth and/or clean the omitted or exposed section before the metallic top coating is applied.
    As already described in connection with the sanitary installation product itself, after the enamelling has been produced, the metallic base layer can be applied, in particular in the form of nickel, to the section left out or exposed by the enamelling, before the metallic top coating is then applied to the metallic base layer will.
    The invention is explained below with reference to a drawing that merely represents an exemplary embodiment. It shows: Fig. 1A A sanitary installation product with a base body made of sheet metal and an enamel coating arranged thereon, Fig. 1B the sanitary installation product according to Fig. 1A after removing the enamel coating on an edge of the metal sheet, with a metallic top coating being applied there, Fig. 2A and 2B an alternative embodiment of the sanitary installation product in views corresponding to Fig. 1A and Fig. 1B, Fig. 3 a sanitary installation product in the form of a bathtub with openings in the base body, Fig. 4 a sanitary installation product in the form of a simple drain cover, Fig. 5 a sanitary installation product with the metallic top coating on one side of the base body, Fig. 6 a sanitary installation product in the form of a shower tray with a metallic top coating in the form of a peripheral decorative border, Fig. 7A and Fig. 7B each a sanitary installation product with an opening in a collar-shaped area, Fig .7C e A further embodiment as a variant of FIG. 7B.
    Figures 1A and 1B show a sanitary installation product in a schematic manner, with only an edge area being shown. The sanitary installation product according to FIGS. 1A and 1B can be, for example, an element or a component for an element from the group of shower trays, shower surfaces, bathtubs, wash basins or urinals. For example, covers such as drain covers, screens or the like can be provided as components of corresponding elements.
    The sanitary installation product comprises a base body 1 made of sheet metal, which is provided with an enamel 2 . In the usual enamelling process, the enamelling extends over the surface of the base body 1 and also encompasses a side edge 3 of the sheet metal. Due to the side edge 3, the enamel 2 can have a greater thickness, which is shown disproportionately in FIG. 1A for clarity. Depending on the materials, the geometry and the way the process is carried out, the thickness of the enamelling can also be reduced in an undesirable manner at the corresponding points.
    [0054] Especially on the side edge 3 of the sheet metal, a mechanical load can lead to the enamel 2 flaking off, so that the base body 1 made of sheet metal is then exposed there and can corrode. In principle, there may also be a need to subsequently trim the base body 1 .
    According to FIG. 1B, the enamelling 2 on the side edge 3 shown in FIG. 1A has been removed, with the base body 1 also being shortened to a certain extent. Accordingly, the thickening of the enamel 2 is removed. The removal of the enamel 2 and the shortening of the base body 1 can be done by trimming or, in an embodiment according to FIGS. 1A and 1B, preferably by grinding.
    In order to protect the side edge 3 of the base body 1 thus exposed, the side edge 3 is provided as a section not provided with the enamel 2 with a metallic base coating 4 made of nickel and a metallic top coating 5 made of chromium. Both the base coat 4 and the top coat 5 can be applied by electrochemical methods. The initially exposed side edge 3 is thus chrome-plated in a particularly advantageous manner. The side edge 3 is thus protected against corrosion and has an attractive appearance. Also, no enamelling 2 is provided directly on the side edge 3, which can flake off under mechanical stress.
    Figures 2A and 2B show a variant of the sanitary installation product according to Figures 1A and 1B, wherein the metal sheet forming the base body 1 is folded onto itself. The outer end of the sheet metal itself is thus internalized and protected to some extent. While according to Figure 2A the metal sheet folded on itself is without or substantially without a gap, in practice there may also be intentionally or unintentionally a gap between the layers of metal sheet formed by folding. In the case of a gap or in other areas after forming, it is possible that there is no enamel in the enamelling due to shading effects, so that these covered areas can then also be effectively protected against corrosion by the metallic top coating 5 within the scope of the invention. This also results in the advantage that during the electrochemical coating, the flow of current enables a uniform layer application even on covered sections that are relatively difficult to access.
    A side edge 3 of the base body is then formed by an outer bending radius, which is provided with an enamel coating according to FIG. 2A. Compared to an arrangement according to FIG. 1A, there is the advantage with regard to the enamelling 2 that the enamelling 2 is distributed more evenly there and can accumulate to a lesser extent. However, in order to enable a concise, appealing and resilient design there as well, the metal sheet forming the base body 1 is exposed according to FIG the top coating 5 made of chrome can be applied.
    In FIG. 2A, the top coating 5 runs exactly vertically. Of course, the corresponding section can also run obliquely and/or in an arc by suitable removal.
    Corresponding coatings are also possible at other points of the sanitary installation product additionally or alternatively. 3 shows an example of a bathtub with openings 6a, 6b, which are introduced into the base body after the enamelling. According to the detailed view of the opening 6a provided as a drain, the sheet metal of the base body 1 is exposed at a cut edge of the opening 6a. This edge 7 is provided with the base coating 4 and top coating 5 in the manner described.
    4 shows that, within the scope of the invention, a drain cover can also be designed to be visually appealing in a particularly simple manner. The base body 1 made of sheet metal is not reshaped in this embodiment but simply cut to a circular shape and provided with the enamel 2 . The obliquely ground side edge 3 of the base body 1 is provided with the base coating 4 and the top coating 5 . The base body 1 is arranged on a support 8, which enables it to be fixed in a drain of a washbasin, a bathtub or the like.
    5 shows a further embodiment, in which the base body 1 made of sheet metal is not provided with the base coating 4 and the top coating 5 on a side edge 3 or an edge 7 but on one surface. The enamel 2 is recessed there, the enamel 2 either not being applied or being removed after a firing process. The metallic top coating 5 shown in FIG. 5 allows the sanitary installation product to be designed in which control surfaces, logos or the like can be formed.
    Finally, FIG. 6 shows a sanitary installation product in the form of a shower tray. In the case of the base body 1 made of sheet metal, the enamel 2 has been removed on a circumferential fold, with the sheet metal being exposed underneath. The metallic base coating 4 made of nickel and the metallic top coating 5 made of chromium are applied to the circumferential section not provided with the enamel coating 2 . The result is a visually very attractive and high-quality decorative edge, which runs around the edge of the sanitary installation product in the form of a shower tray. With regard to the metal sheet constituting the main body 1, the metal coating is formed on a side which is exposed and visible to a user.
    7A and 7B show further possible configurations of the sanitary installation product according to the invention, with an opening being located in an area pulled out downwards as a collar. The extracted portion runs obliquely (Fig. 7A) or approximately perpendicularly (Fig. 7B) to the adjacent part of the body. In order to optimally protect the edge of the opening that is exposed in this way, the enamel coating 2 that is also present directly on the edge is removed, with the base coating 4 and the top coating 5 being applied there instead. Even if water is permanently or regularly present during use, there is good protection. There is also no risk of the enamel 2 flaking off directly at the edge. Finally, the edge is permanently smooth and even, so that it can be used as a contact surface for a seal.
    7C shows a modification of the embodiment according to FIG. 7B, the base coating 4 and the top coating 5 instead of the enamel 2 being present not only on the edge but also on the adjoining sides of the metal sheet. A cylindrical pipe socket formed in this way thus has a cylinder section which is not provided with the enamel 2 on the inside and outside, but instead with the metallic top coating 5 and underneath with the base coating 4 . Together with the base coating 4, the metallic top coating 5 also has a smaller thickness and in particular a smaller variation in thickness than the enamel 2, so that better dimensional accuracy can be achieved. If the cylinder section is used for a clamping fixation, no enamel can flake off there under the influence of force.
    Functional formations can also be formed on the cylinder section that is not provided with the enamel 2, with a bore 9 on the left side of FIG. 7C and a corrugation 10 (usually running around the entire circumference) on the right side of the 7C are shown.
    There is then also the advantage that the comparatively thin metallic top coating 5 and the optional base coating 4 can also be easily applied to such functional shapes, adapt well to the contours and - unlike the thicker enamel coating - the functionality provided in each case not or at least less affected.
    权利要求:
    Claims (16)
    [1]
    1. Sanitary installation product with a base body (1) made of sheet metal and with an enamel coating (2) applied in sections to the base body (1), characterized in that a metallic top coating (5) is provided which is only on at least one not covered with the enamel coating ( 2) provided portion of the base body (1) is applied.
    [2]
    2. Sanitary installation product according to claim 1, characterized in that the metallic top coating (5) is formed from chromium.
    [3]
    3. Sanitary installation product according to claim 1 or 2, characterized in that the metallic top coating (5) is arranged on a metallic base coating (4) of the metal sheet, in particular made of nickel.
    [4]
    4. Sanitary installation product according to claim 3, characterized in that the metallic base coating (4) is applied only to the at least one section of the base body (1) not provided with the enamel (2).
    [5]
    5. Sanitary installation product according to one of claims 1 to 4, characterized in that the metallic top coating (5) is arranged on an edge of the metal sheet.
    [6]
    6. Sanitary installation product according to one of claims 1 to 4, characterized in that the metallic top coating (5) is arranged on one side of the metal sheet.
    [7]
    7. Sanitary installation product according to one of claims 1 to 4, characterized in that the metallic top coating (4) is arranged on an edge and at least one adjoining side of the metal sheet.
    [8]
    8. Sanitary installation product according to one of claims 1 to 7, characterized in that the base body (1) is an element or a component for an element from the group shower tray, shower surface, bathtub, sink and urinal.
    [9]
    9. A method for producing a sanitary installation product, in particular according to one of claims 1 to 8, wherein successivelya. a metallic base body (1) made of sheet metal is provided and provided with an enamel slip,b. an enamel coating (2) is formed by firing the base body (1) provided with the enamel slip andc. at least one section left out or exposed by the enamel (2) is provided with a metallic cover layer (5) by electrochemical deposition.
    [10]
    10. The method according to claim 9, wherein the base body (1) is trimmed after the production of the enamel (2) in an area provided with the enamel (2), whereby the base body (1) is exposed at a cut edge and the cut edge as a exposed section is subsequently provided with the metallic cover layer (5).
    [11]
    11. The method according to claim 9, wherein the enamel (2) is removed from a side edge (3) of the base body (1) initially provided with the enamel.
    [12]
    12. The method according to claim 9, wherein the enamel (2) is removed from an edge of an internal opening of the base body (1) initially provided with the enamel (2).
    [13]
    13. The method according to claim 9, wherein the section omitted from the enamel (2) is produced by a mask covering the base body (1) during the application of the enamel slip and optionally also during the firing.
    [14]
    14. The method according to claim 9 to 13, wherein the omitted or exposed section is ground before the application of the metallic cover layer (5).
    [15]
    15. The method according to any one of claims 9 to 14, wherein after the production of the enamel (2), a metallic base layer (4) is applied to the section left out or exposed by the enamel (2) before the metallic top layer (5) is subsequently applied the metallic base layer (4) is applied.
    [16]
    16. The method according to any one of claims 9 to 15, wherein at a distance from the of the enamel (2) left out or exposed section, which is provided with the metallic cover layer (5), on a covered area of the base body (1) an electrical Contacting takes place at a contact section that is also not provided with the enamel (2).
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    同族专利:
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    DE102020004888A1|2022-02-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2656434C3|1976-12-14|1980-04-30|Erich 4630 Bochum Ahrensmeier|
    DE102011000275C5|2011-01-21|2020-03-19|Franz Kaldewei Gmbh & Co. Kg|Sanitary tub|
    DE102014102135A1|2014-02-19|2015-08-20|Franz Kaldewei Gmbh & Co. Kg|Sanitary bath arrangement|
    DE102018132073A1|2018-10-01|2020-04-02|Bette Gmbh & Co. Kg|Sanitary tub and method of making a sanitary tub|
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