WO2023194775A1

WO2023194775A1 - Article of daily use for use during the consumption of meals

Info

Publication number: WO2023194775A1
Application number: PCT/IB2022/053222
Authority: WO
Inventors: Tanja Mader
Original assignee: Tanja Mader
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2023-10-12

Abstract

The invention relates to an article of daily use (2) for use during the consumption of meals, comprising a sheet metal body (10) with a first flat face (12) on which a functional surface (16) is arranged for supporting food and/or a container containing a food, a second flat face (14) lying opposite the first flat face (12), and an edge face (18) which connects the two flat faces (12, 14) together at an edge (20) that delimits the sheet metal body (10) and peripherally surrounds the functional surface (16), wherein the edge (20) is folded so as to form a bead (22), which surrounds the edge face (18) over an angle of more than 360°, about the periphery of the functional surface (16), one flat face (12) of the two flat faces (12, 14) sitting against the other flat face (14) of the two flat faces (12, 14) in said bead.

Description

Commodity item for use when taking meals

Description

The present invention relates to an article of use for use in taking meals, a method for sealing an edge side in the article of use and a method of producing the article of use.

The US 2006/0210683 Al shows a party tray which comprises a carrier tray and on the carrier tray a sealed packaging which consists of a transparent container body and a polymer which is sealed with the edge of the container body. The sealed packaging contains food, especially breathing foods, such as fresh fruits and vegetables. The sealed packaging contains food, especially breathing food such as fresh fruits and vegetables, resting on the sealing film; the sealing film is in turn carried by the carrier shell. The sealed package may contain an atmosphere control element. When the party bowl is on display, its contents can be seen through the plain thickness of the container body.

Commodities used at large public events for eating meals, also known as tableware, must be inexpensive to produce. Although paper tableware meets this requirement, it is not only expensive to dispose of, but in the long term paper tableware is also very expensive to purchase because new paper tableware has to be used for every major event. Plastic tableware is also unusable for large events. Although there are inexpensive plastic materials to procure and process that allow the tableware to be recycled, such as melamine, melamine in particular causes harmful formaldehyde to evaporate when the plastic tableware comes into contact with hot food or drinks. The use of inexpensive plastic materials therefore fails due to food safety.

Ultimately, ceramic is also not suitable as tableware for large events due to its fragility and high production costs. There are also various metals that can be used for tableware for large events, such as aluminum tableware. However, such dishes are easily bendable and therefore cannot be reused. Higher quality metal tableware, for example made of enamel, is too expensive to produce.

The object of the invention is to provide a cost-effective commodity for use when taking meals, which is reusable and suitable for use at large events and does not have any harmful effects on health, even at high temperatures of the meal to be eaten.

The task is solved by the features of the independent claims. Preferred further training is the subject of the dependent claims.

According to one aspect of the invention, an article of use for use when taking meals comprises a sheet metal body with a first surface side on which a functional surface for carrying a food and / or container with a food is arranged, a second surface side opposite the first surface side and a The edge side connecting the two surface sides to one another on an edge that delimits the sheet metal body and surrounds the functional surface. The edge around the functionality Onssurface folded around to form a bead enclosing the edge side with an angle of greater than 360 °, in which one of the two surface sides is applied to the other of the two surface sides.

The specified item of use, also known as tableware, is based on the idea that sheet metal basically meets all of the requirements mentioned above so that it can be provided and reused cost-effectively at major events. However, conventional biscuit tins have a significant disadvantage if they are washed several times in a dishwasher. Sheet metal is usually cut on its edge sides and is therefore unsealed, so that rust sets in there, making the item unusable for use when taking meals.

A conventional sealing of the edge side of the everyday item with a protective coating is unsuitable for use at large events, since in an emergency the everyday items can be exposed to frequent vibrations, which destroy the protective coating and expose the rust-prone sheet metal material.

For this reason, it is proposed with the specified commodity to roll up the edge of the sheet metal body over the entire circumference of the commodity and to form a closed receiving space for the edge side of the sheet metal body by placing the two surface sides on top of each other. In this receiving space, the rust-prone edge side is protected from water and other materials that promote weathering, so that it cannot rust even if it is washed several times in a dishwasher. In principle, no further protective measures are required for the edge side, so that the specified consumer item can be manufactured cost-effectively from a single sheet of metal without any additional materials. Since metal is stable in the temperature range of food preparation, there is no risk of evaporation of substances that are harmful to health. In a further development of the specified article of use, a bead radius of the bead towards the edge side is smaller than towards the functional surface. In this way, the edge can be easily rolled up when forming the bead without the risk of tilting.

In an additional development of the specified article of use, the bead is designed as a hollow bead with a circular cross section. In this way, the protective measure described above for the edge side of the sheet metal body can be implemented with little material and space requirements.

In another development of the specified commodity, the sheet metal body is cut from tinplate with a sheet thickness between 0.15 mm and 0.5 mm on the edge side. Tinplate is already known as a packaging material in the food industry, making it an excellent material for a commodity for use when taking meals. Furthermore, tinplate can be easily recycled, so that everyday items of the specified type that are no longer washed and reused can be disposed of in an environmentally friendly manner. Tinplate also offers excellent corrosion protection.

In yet another development of the specified article of use, the area of the functional surface of the sheet metal body is deep-drawn. In this way, plates, trays, cups or the like can be produced inexpensively as everyday items.

In a special development of the specified article of use, reinforcing elements are molded into the deep-drawn area of the sheet metal body to increase the bending strength of the sheet metal body. In this way, a high level of dimensional stability of the specified consumer item can be achieved.

In a preferred development of the specified article of use, the reinforcing elements are beads. These are shaped elements that are molded into the tableware, which at the same time Deep-draw or have it worked in afterwards. At the same time, these beads can be designed in the form of a pattern, with which simple advertising messages can be implemented, for example.

In a particularly preferred development of the specified article of use, the beads are designed in the form of grooves. The grooves can be formed into the dishes directly during deep drawing, which means that increased dimensional stability can be achieved without additional process steps during production.

In a further development of the specified article of use, the edge side is coated with a sealing medium. The sealing medium can further increase corrosion protection if, for example, due to tolerances, a residual gap remains between the surface sides on the bead through which fluids could tunnel into the receiving space formed by the bead.

In an additional development of the specified article of use, the sealing medium can be curable using ultraviolet radiation. In this way, the sealing medium can be applied to the edge side before forming the bead, with little risk of damage when forming the bead.

According to a further aspect of the invention, a method for sealing the edge side in one of the specified articles of use comprises the steps of clamping the article of use between an upper beam and a lower beam, creating a bending groove shaped with a bending radius, which is formed in a lateral surface of a knurling roller rotatable about a knurling roller rotation axis , to the edge side of the sheet metal body in such a way that at the landing point the knurling roller rotation axis is normal to the sheet metal body and the inner surface of the bending groove is aligned at an angle to the knurling roller rotation axis, rotating the bending knurl roller about the knurling roller rotation axis, pressing the rotating bending knurl roller against the edge side, and moving the bending knurl roller against the Edge side pressed bending knurl roller along the edge side around the functional surface. The stated method is based on the idea that beads in the prior art can only be realized if a corresponding counterpart is arranged in the receiving space of the bead, around which the bead can be formed. For example, when forming a bead in the form of a double fold, as is known when closing conventional beverage cans with a lid, a partner sheet is necessary as a counterpart around which the double fold can be bent. However, such a counterpart in the specified article of use would only increase both the material costs and the manufacturing costs when forming the bead, because the counterpart must be provided on the one hand and also fixed. In order to avoid this additional effort, the specified method suggests producing the bead not with known bending processes but with a knurling roller. In this way, the bead can be rolled up through more than 360°, even without a counterpart to be bent around.

In a further development, the specified method includes the steps of applying a post-processing fillet shaped with a post-processing radius, which is formed into a lateral surface of a post-processing roller rotatable about a post-processing roller rotation axis, to the curved edge of the sheet metal body in such a way that the post-processing roller rotation axis is normal to the sheet metal body at the landing point and the inner surface of the finishing fillet is oriented at an angle to the finishing roller rotation axis, rotating the finishing roller about the finishing roller rotation axis, pressing the rotating finishing roller against the curved edge, and moving the finishing roller pressed against the curved edge along the curved edge around the functional surface. With the finishing roller, the edge side can be pushed significantly deeper into the receiving space formed by the bead.

In a special development of the specified method, the post-processing radius is larger than the bending radius. In this way, when the bead is formed, the two sides of the surface are firmly pressed against each other. derpressed, whereby the receiving space formed by the bead is securely sealed and potential remaining gaps are closed.

In a preferred development of the specified method, the post-processing fillet is pivoted around the curved edge when pressed against the curved edge. In this way, the depth with which the edge side is pushed into the receiving space formed by the bead can be increased even further.

According to a further aspect of the invention, a method for producing one of the specified consumer items includes the steps of producing the sheet metal body by punching, producing the functional surface by deep drawing the sheet metal body, and sealing the edge side with one of the specified methods for sealing the edge side in one of the specified consumer items.

In a further development of the specified method, the edge side is coated with a sealing medium before sealing. The coating preferably takes place directly after the punching.

The properties, features and advantages of this invention described above and the manner in which they are achieved will become more understandable in connection with the following description of the exemplary embodiments, which will be explained in more detail in connection with the drawing. Show it:

Fig. la shows a view of a first article of use for use when taking meals from a first perspective,

Fig. lb shows a view of the first article of use for use when taking meals from a second perspective,

2a shows a view of a second everyday item for use when taking meals on a bottom side, 2b shows a view of the second article of use for use when taking meals from one side,

Fig. 3 is a structural view of an edge shaped into a bead of the everyday objects according to Figs. la to 2b.

4a shows a representation of a punching process for producing a sheet metal body for the everyday objects according to FIGS. la to 2b in a first state,

4b shows a representation of the punching process for producing the sheet metal body in a second state,

5 shows a representation of a deep-drawing process for producing a functional surface in the everyday objects according to FIGS. la to 2b in an initial state,

6a shows a representation of a shaping process for producing the bead according to FIG. 3 in the everyday objects according to FIGS. la to 2b in a first state,

6b shows a representation of a shaping process for producing the bead according to FIG. 3 in a second state,

7a shows a representation of a shaping process for producing the bead according to FIG. 3 in a third state,

7b shows a representation of a shaping process for producing the bead according to FIG. 3 in a fourth state,

Fig. 8 shows a device for coating an edge side in the sheet metal body of the everyday objects according to Figs. la to 2b. In the figures, the same technical elements are given the same reference numbers and are described only once. The figures are purely schematic and, above all, do not reflect the actual geometric relationships.

Reference is made to Figs, 1a and 1b, which show a utility article 2 for use in taking meals from two different perspective views. The commodity 2 lies in a space that is spanned by a longitudinal direction 4, a transverse direction 6 and a height direction 8.

The commodity 2 is made from a sheet metal body 10, which has a first surface side 12 and a second surface side 14 opposite the first surface side 12. The first surface side 12 is arranged at the top of the sheet metal body 10 as viewed in the height direction 8 and is therefore referred to below as the sheet metal top 12. The second surface side 14 is arranged at the bottom of the sheet metal body 10 as viewed in the height direction 8 and is therefore referred to below as the bottom side of the sheet metal 14. A functional surface 16 for carrying food is arranged on the top of the sheet metal 12. The food can in particular be a snack dish, which is held in the hand and consumed by the person taking the food, for example at large events.

The two surface sides 12, 14 are connected to one another via an edge side 18 which can only be seen in FIG. The edge side 18 will be discussed in more detail later. The edge side 18 is part of an edge 20 of the sheet metal body 2, which delimits the sheet metal body 10 and surrounds the functional surface 16 all around. The edge side 18 cannot be seen in Figs, 1a and 1b because the edge is folded around the functional surface 16 to form a bead 22 which encloses the edge side 18 at an angle of greater than 360°. This means that the edge side is arranged in a receiving space 24 enclosed by the bead 22, which can be seen in FIG. 3. This receiving space 24 is closed because the top side of the sheet metal 12 is placed against the bottom side of the sheet metal 14 all around the functional surface 16. This means that the receiving space 24 is closed all around the functional surface 16 and the edge side 18 is protected from penetrating fluids, such as washing water.

The sheet metal body 10 is made of tinplate. This is cold-rolled sheet steel that is coated with at least 3 g/m ² of tin to protect against corrosion. This corresponds to a layer thickness of at least 0.3 pm tin on the steel sheet. The sheet metal body 10 in the illustrated commodity 2 should have a sheet thickness 26 referenced in FIG. 3 between 0.15 mm and 0.5 mm. This is sufficient to shape the commodity 2 cost-effectively on the one hand, but to provide sufficient mechanical stability on the other hand.

The functional surface 16 in the commodity 2 shown in FIGS. 1a and 1b is deep-drawn into the sheet metal body 10, which will be discussed in more detail later. In order to increase the mechanical stability in the area of the functional surface 16 of the sheet metal body 10 and thus keep the sheet metal thickness 26 as low as possible, reinforcing elements are formed into the deep-drawn area here in the form of beads. On a wall 32 of the commodity 2, which connects the functional surface 16 with the edge 20, recessed beads 28 are formed, which are drawn into the sheet metal body 10 through a wall of the deep-drawing punch during deep-drawing. In contrast, pressed-in beads 30 on the functional surface 16 are stamped into the sheet metal body 10 by a drawing die and have the shape of grooves which are formed circumferentially around a center point of the functional surface 16 that is not further referenced.

To use the commodity 2 shown in FIGS. 1a and 1b, the food to be consumed is placed on the functional surface 16. The wall 32 between the functional surface 16 and the edge 20 forms, together with the functional surface 16, a holding space 34 so that the food to be consumed cannot fall off the functional surface 16. The commodity 2 can be held on a side of the wall 32 opposite the holding space 34 for consumption of the food. Although the commodity 2 can also hold food with a higher temperature in the holding area 34 due to the material, the commodity 2 must be gripped on the aforementioned wall 34 and/or below the functional surface 16 when viewed in the height direction 8. In order to avoid unintentional burns, a thermally insulating material could be arranged on the side of the wall 32 of the commodity 2 opposite the holding space 34, which, however, involves additional manufacturing effort.

A cheaper alternative for the insulating material is shown in Figs. 2a and 2b indicate a geometrically alternative commodity 2 to the commodity 2 of FIGS. la and lb. Technically speaking, the everyday items 2 of Figs, 1a and 1b as well as Figs. 2a and 2b are the same except for the previously mentioned alternative for the insulating material. Since this alternative can basically also be implemented in the commodity 2 of FIGS. 1a and 1b, both commodities 2 are provided with the same reference number.

In the commodity 2 of Figs. 2a and 2b, a flange 36 is additionally arranged between the wall 32 and the edge 20, on which the item of use 2 can be held, particularly when foods that are too hot are contained in the holding space 34 in order to hold the item of use 2 on the wall 32 and/or or seen in the height direction 8 below the functional surface 16.

With reference to Fig. 3, which shows the bead 22 on the article of use 2 of Figs.

The edge side 18 is created by cutting out the sheet metal body 10 from a sheet of metal. The cutting can be done, for example, using conventional punching processes. Basically, the sheet metal body 10 made of tinplate is protected against corrosion due to the tin layer on the top 12 and the bottom 14. The commodity 2 can therefore be washed and recycled. Especially at large events, where a large number of visitors are usually expected, the everyday item 2 made of tinplate is a real alternative to disposable tableware because it is not only environmentally friendly, it also saves on new purchase costs and disposal costs for the disposable tableware.

However, the tin layer on the sheet metal body 10 made of tinplate is only approx. 5 pm, so that the steel of the tinplate is exposed below the tin layer on the edge side 18 and can basically rust. Although the sheet metal body 10 could be subsequently coated with corrosion protection at this point, this corrosion protection must then also be sufficiently mechanically resistant to withstand vibrations and the like, which are regularly to be expected at such major events because users of such everyday items usually not treat with care.

For this reason, the bead 22 mentioned at the beginning is proposed, into which the edge side 18 is rolled up and which thus forms the receiving space 24 for the edge side 18. If the receiving space 24 is hermetically sealed, that is, if the top 12 closes circumferentially around the surface area 16 in a contact area 38 and thus around the holding space 34 close to the underside 14, then no fluid, such as washing water, can penetrate into the receiving space 24. In this case, there is no need for additional corrosion protection on the edge side 18.

Even if the receiving space 24 cannot be hermetically sealed because, for example, due to tolerances, a residual gap between the top 12 and the bottom 14 remains in the contact area 38, the receiving space 24 protects the edge side 18 at least mechanically from external influences, so that a possible Corrosion coating on it is not directly exposed to mechanical shocks.

For a hermetic sealing of the receiving space, for example, a radius 39 of the bead seen in cross section can be increasingly formed as viewed from the edge side 18, so that the top 12 is pressed elastically against the bottom 14.

A manufacturing process for the specified commodity 2 is described below.

This will first be done using Figs. 4a and 4b describe a punching process with which the edge side 18 can be sealed at the same time.

After the sheet metal from which the sheet metal body 10 is to be punched is placed in a punch, not shown, the sheet metal body 10 is cut from the sheet metal with a cutting knife 40 in a manner known per se, by the cutting knife 40 with a cutting edge 41 in front in one Cutting direction 42 is driven through the sheet. 4a shows the part of the punching process in which the cutting process is completed, but the edge side 18 of the sheet metal body 10 still touches the blade mirror 44 above the cutting edge 41, seen in the cutting direction 42.

Seen in the cutting direction 42, the cutting knife 40 steps back above the blade mirror 44 and forms a receiving space with an imaginary line that continues the blade mirror 44, in which an application means 46 is arranged, which protrudes into the path of the sheet metal body 10 during the cutting process. A sponge or a stamp, for example, can be used as the application medium 46. A channel 48 leads through the cutting knife to the application medium 46 and supplies it with a sealing medium with which the edge side 18 can be sealed in a corrosion-protected manner.

If the cutting knife 40 is moved further in the cutting direction 42 from the state shown in FIG. 4a, this reaches the path of the sheet metal body 10 projecting application means 46 the edge side 18 and thus applies the sealing medium from the channel 48. In this way, the edge side 18 can already be sealed during the punching process.

However, applying sealant during the stamping process is optional and can be done either afterward or not at all.

A varnish that can be hardened using ultraviolet radiation should be used as a sealing medium. In this way, the sealing medium on the edge side can be sufficiently mechanically stabilized for the further manufacturing steps of the consumer item.

The punching process is followed by a deep-drawing process. The deep-drawing process is explained in more detail below with reference to FIG.

For this purpose, the deep-drawing press 50 has a drawing die 52 with an extension space 54, which is covered with its underside 14 by the sheet metal body 10. A hold-down device 56 is pressed onto the top of the sheet metal body 10, through which a drawing punch 58 is guided. For deep drawing, the drawing punch 58 is pressed into the extraction space 54.

The drawing punch 58 inserted into the pull-out space 54 and the pull-out space 54 delimit a mold space, not shown, which contains the shape of the commodity 2 to be deep-drawn, as shown in FIGS. 1a and 1b or in FIGS. 2a and 2b is shown in the negative. In this way, when the drawing die 58 is pressed into the pull-out space 54, the shape of the commodity 2 to be deep-drawn is formed. Since deep drawing is a known manufacturing process, further details will be omitted for the sake of brevity.

The deep drawing is then followed by the formation of the bead 22. This is explained below with reference to Figs. 6a and 6b, which have a first The th shaping step of the bead 22 is shown schematically and the Figs. 7a and 7b, which schematically illustrate a second forming step of the bead 22.

First, the underside 14 of the deep-drawn sheet metal body 10 is placed on a lower beam 60 and fixed with an upper beam 62 pressed onto the top side 12 of the deep-drawn sheet metal body 10. In the Figs. 6a to 7b, the deep-drawn sheet metal body 10 is shown straight for the sake of simplicity. For example, it can be imagined as looking at the flange 32.

Following the fixation between the cheeks 60, 62, a knurling roller 64 is placed on the edge side 18 of the deep-drawn sheet metal body 10. The knurl roller 64 is held on a knurl holder 66 and can be rotated about a knurl roller rotation axis 68. The knurl roller rotation axis 68 in FIG. 6a is arranged perpendicular to the plane which is spanned by the longitudinal direction 4 and the transverse direction 6. However, this arrangement of the knurled roller rotation axis 68 is purely an example and can basically be arbitrary.

The knurled roller 64 has a circumferentially closed lateral surface 70 around the knurled roller axis of rotation 68, which is formed radially with a bending groove 72 with a bending radius 73. The bending groove 72 is delimited by an upper edge 74 formed above the edge side 18 as seen in the height direction 8 and a lower edge 76 formed below the edge side 18 as seen in the height direction 8.

In FIG. The inner surface 78 at the contact point is indicated in Fig. 6a with a dashed line. In this context, angular means that an angle 80 between the knurl roller rotation axis 68 and the inner surface 78 is not equal to 180°. Before or after placing it on the edge side 18 in the manner mentioned above, the knurling roller 64 is rotated about the knurling roller rotation axis 68. The rotating knurled roller 64 is now pressed against the edge side 18 in the longitudinal direction 4 in FIG. 4a. The rotating knurl roller 64, which is pressed against the edge side, is moved along the edge side 18 around the functional surface 16 and thus around the holding space 32, as a result of which the edge side 18 is seen on the edge 20 of the deep-drawn sheet metal body 10 through the bending groove 72 in the height direction 8 pulled down and shaped into a round bead 22.

Depending on whether the bead 22 is as shown in FIGS. 6a and 6b is already sufficiently closed or needs to be closed further, the shaping process can be carried out with a post-shaping step according to FIGS. 7a and 7b are continued.

During the post-forming step, a post-processing roller 82 is first applied to the already formed bead 22. The post-processing roller 80 is pivotally held on a roller holder 83 and can be rotated about a post-processing axis of rotation 84.

Analogous to the knurled roller 64, the post-processing roller 80 has a circumferentially closed lateral surface 70 around the post-processing axis of rotation 80, into which a post-processing groove 86 with a post-processing radius 88 is formed radially. The post-processing radius 88 of the post-processing groove 86 is larger than the bending radius 73 of the bending groove 72.

The ones shown in Figs. 6a and 6b shaped bead is now recorded in the post-processing fillet 86. The post-processing roller 82 is brought into a position so that the post-processing axis of rotation 84 is inclined to the top 12 of the sheet metal body 10. Before or after the post-processing roller 86 is arranged in the manner described above, it is rotated about the post-processing rotation axis 84. The rotating finishing roller 86, in which the preformed bead 22 is received, is now pressed radially against an axis of rotation 90 of the bead 22, around which the bead 22 is formed. During this radial pressing, the finishing roller 86 is moved circumferentially about the axis of rotation 90 of the bead 22 by a rotation path 92. Here, the roll holder 83 is moved and at the same time the post-processing roller 82 is pivoted around the roll holder 83, so that the pivot axis of the post-processing roller 82 lies virtually in or on the post-processing groove 86.

The rotation path 92 can be chosen arbitrarily, depending on how far the edge side 18 should be pushed into the receiving space 24 of the bead. In Figures 7a and 7b, the rotation path 92 is approximately 90°. The rotation of the finishing roller 82 around the rotation path 92 can either be increased step by step after a complete revolution around the functional surface 16. Alternatively, the rotation path 92 can also be traversed, moving stepwise around the functional surface 16. A combination of both approaches is also possible.

As a result, the edge side 18 is pushed further into the receiving space 24. The contact area 38 formed in this way is limited only by the effort required to push the edge side 18 further forward. If this is too high, the sheet metal body 10 can bend. The maximum contact area 38 that can be produced is essentially dependent on the sheet metal thickness 26 and on the force with which the top 12 of the sheet metal body 10 presses against the bottom 14.

Finally, an alternative or additional possibility of sealing the edge side 18 of the sheet metal body is described with reference to FIG. 8. Here, a specially made sealing device 94 is used, which has a not wide referenced trough in which the deep-drawn sheet metal body is accommodated, with the edge side 18 using the forming method according to Figs. 6a and 6b are rotated by approximately 90° towards the bottom. The sealing device 94 has a bath groove 96 all around the trough, in which the sealing medium described above is accommodated. If the deep-drawn and according to the forming process according to Figs. 6a and 6b pre-processed sheet metal body 10 is placed in the trough, the edge side 18 is received in the bath groove 96 and automatically coated with the sealing medium.

The commodity 2 can also be a tray, on the functional surface 16 of which other commodities 2 are carried, which in turn hold food.

Claims

Patent claims

1. Commodity item (2) for use when taking meals, comprising a sheet metal body (10) with a first surface side (12), on which a functional surface (16) for carrying a food and / or container with a food is arranged, one of second surface side (14) opposite the first surface side (12) and an edge side (18) connecting the two surface sides (12, 14) to one another on an edge (20) which delimits the sheet metal body (10) and surrounds the functional surface (16). Edge (20) is folded around the functional surface (16) to form a bead (22) enclosing the edge side (18) at an angle of greater than 360 °, in which one (12) of the two surface sides (12, 14). the other (14) of the two surface sides (12, 14) is created.

2. Commodity item (2) according to claim 1, wherein the bead (22) is circular when viewed in a cross section and a radius (39) of the bead (22) directed towards the edge side (18) is smaller than towards the functional surface (16). directed towards.

3. Object (2) according to one of the preceding claims, wherein the sheet metal body (10) is cut from tinplate with a sheet thickness (26) between 0.15 mm and 0.5 mm on the edge side (18).

4. Commodity item (2) according to one of the preceding claims, wherein the region of the functional surface (16) of the sheet metal body (10) is deep-drawn.

5. Commodity item (2) according to claim 5, wherein reinforcing elements (28, 30) are molded into the deep-drawn region (34) of the sheet metal body (10) to increase the bending strength of the sheet metal body (10).

6. A method for sealing an edge side (18) in a consumer article (2) according to one of the preceding claims, comprising:

- Clamping the sheet metal body (10) between an upper beam (62) and a lower beam (60),

- Applying a bending groove (72) shaped with a bending radius (73), which is formed into a lateral surface (70) of a knurling roller (64) rotatable about a knurling roller rotation axis (68), to the edge side (18) of the sheet metal body (10) in such a way that at the landing point the knurl roller rotation axis (68) is normal to the sheet metal body (10) and the inner surface (78) of the bending groove (72) is aligned at an angle to the knurl roller rotation axis (68),

- Rotating the knurling roller (64) around the knurling roller rotation axis (66),

- Press the rotating knurled roller (64) against the edge side (18), and

- Moving the knurled roller (64) pressed against the edge side (18) along the edge side (18) around the functional surface (16).

7. The method according to claim 6, comprising:

- placing a post-processing fillet (86) shaped with a post-processing radius (88), which is formed in a lateral surface (70) of a post-processing roller (82) rotatable about a post-processing roller rotation axis (84), on the curved edge (20) of the sheet metal body (10),

- rotating the post-processing roller (82) around the post-processing roller rotation axis (84),

- Press the rotating finishing roller (82) against the curved edge (20), and

- Moving the post-processing roller (82) pressed against the curved edge (20) along the curved edge (20) around the functional surface (16).

8. The method according to claim 8, wherein the post-processing radius (88) is larger than the bending radius (73).

9. The method according to claim 7 or 8, wherein the finishing fillet (86) is pivoted about the curved edge (20) when pressed against the curved edge (20).

10. A method for producing a consumer article (2) according to one of claims 1 to 5, comprising:

- producing the sheet metal body (10) by punching,

- Producing the functional surface (16) by deep drawing the sheet metal body (10), and - Sealing the edge side (16) using a method according to one of claims 6 to 9.