Method for producing an aluminum can and forming tool

Abstract

The invention relates to a method for manufacturing an aluminum can designed for storing a filling material, wherein the method comprises the steps of: a) providing an aluminum can blank (2) having an unpainted inner surface (3); b) providing a forming tool (4) having at least one ceramic and / or hard-coated forming section (5, 5A, 5B); and c) forming the provided aluminum can blank (2) using the provided forming tool (4), wherein during the forming process at least one surface area (6, 6A, 6B) of the aluminum can blank (2) slides along the forming section (5, 5A, 5B) of the forming tool (4).

Description

SCOPE OF APPLICATION AND STATE OF THE ART

[0001] The invention relates to a method for manufacturing an aluminum can designed for storing a contents. The invention also relates to a forming tool designed for such a method. TASK AND SOLUTION

[0002] It is an object of the present invention to provide a method for manufacturing an aluminum can designed for storing a contents, and a forming tool designed for such a method, each of which, in particular, has special and / or improved properties. In particular, the invention aims to enable a particularly material-friendly, and especially damage-free, forming process for manufacturing an aluminum can without an internal coating.

[0003] This problem is solved by the subject matter of the independent patent claims. Preferred embodiments are the subject matter of the dependent patent claims. The wording of all claims is incorporated by express reference into the present description.

[0004] A method according to the invention is provided for the production of an aluminum can. The aluminum can produced according to the method serves to store a contents. In particular, the aluminum can is produced to be used for storing the contents. In particular, the aluminum can can be used to store a contents that are inert with respect to the can material.

[0005] The method comprises step a) in which an aluminum can is provided, wherein the aluminum can has an unpainted interior. The aluminum can has, in particular, a substantially cylindrical, especially circular, basic shape. The aluminum can has, in particular, a closed bottom end and a further end opposite the bottom end with a can opening.

[0006] The method also includes a step b) in which a forming tool is provided, wherein the forming tool has at least one ceramic and / or hard-coated forming section. A "forming section" can be understood, in particular, as a section of the forming tool designed to contact the aluminum can for forming. The forming tool can have several forming sections, of which at least one, some, several, or all are ceramic and / or hard-coated to reduce forming friction.

[0007] Furthermore, the method includes a step c) according to which the provided aluminum can is formed using the provided forming tool, wherein during the forming process at least one surface area of ​​the aluminum can slides along the at least one forming section of the forming tool, in particular in contact, more specifically with low friction.

[0008] Due to the ceramic and / or hard-coated design of at least one forming section or several or all forming sections, a particularly low-friction sliding along the surface area of ​​the aluminum can is made possible, which enables a particularly material- and / or surface-friendly forming of the aluminum can.

[0009] In particular, the invention makes it possible to dispense with the internal coating conventionally applied to the inside of aluminum cans that are formed during forming. Such an internal coating can be used in conventional methods for manufacturing aluminum cans to reduce forming friction. In other words, the invention enables the forming of an aluminum can without internal coating, thus conserving material and / or preventing damage.

[0010] Furthermore, omitting the interior coating eliminates work steps such as interior coating and drying, thereby saving material and energy. Along with saving the drying time for the interior coating, the associated heat input into the can material is avoided, which improves the stability of the aluminum can. Accordingly, an aluminum can manufactured according to the invention can exhibit the same pressure resistance as conventional aluminum cans, but with a thinner wall and thus requiring less can material.

[0011] In particular, the terms "exhibits" and / or "has" can be used synonymously with the terms "includes" and / or "has". Additionally or alternatively, the term "is trained" can be used synonymously with the term "configured". Furthermore, additionally or alternatively, the term "directly" can be used synonymously with the term "immediately". Additionally or alternatively, the term "indirectly" can be used synonymously with the term "indirectly".

[0012] The phrase "as well as - alternatively or additionally =" can be replaced in the present context by the phrase "and / or", and vice versa.

[0013] The aluminum can blank can be referred to synonymously as aluminum can blank.

[0014] The aluminum can can be an aerosol can and / or a spray can. Specifically, it can be either a pressurized aerosol can or a non-pressurized aerosol can, particularly for a pump spray.

[0015] Advantageously, the aluminum can can be produced before or during the provision according to step a) by forming an aluminum slug into the aluminum can by flow forming, in particular by cold flow forming, or by extrusion.

[0016] The aluminum can can be cut to length or trimmed as needed.

[0017] The process expediently includes a final step in which the aluminium raw can, reshaped according to step c), is further processed into the aluminium can to be produced.

[0018] Advantageously, the can material of the aluminum can can be pure aluminum with an aluminum content of at least 99.5%, preferably at least 99.7%, such as EN AW-1050A. Alternatively, the can material can consist of an aluminum alloy, preferably from the 3XXX alloy group, such as EN AW-3102 or EN AW-3207A.

[0019] It is advantageous for the can material to be present in a bare state, in particular at least or only on the inside of the aluminum can, when providing the aluminum can according to step a).

[0020] Advantageously, at least one ceramic forming section of the forming tool may comprise or consist of a ceramic, in particular a ceramic material. It is conceivable that the entire forming tool consists of a ceramic or a ceramic material. For example, a zinc oxide ceramic, in particular a zinc oxide ceramic material, or an aluminum oxide ceramic, in particular an aluminum oxide ceramic material, may be used as the ceramic material for at least one ceramic forming section.

[0021] Advantageously, at least one hard-coated forming section of the forming tool has a surface hard coating. It is also conceivable to provide the entire forming tool with a surface hard coating.

[0022] In the present context, a hard coating specifically contains or consists of a hard material. "Hard materials" can be understood as materials characterized by a particular, especially high, hardness.

[0023] Hard materials are primarily formations of intermetallic phases, often metal carbides, and less frequently ceramics, in which a high proportion of metallic bonding character is present. Hard materials can be used in composite materials as aggregates in a metallic matrix, frequently cobalt. Such composite materials can be classified as "hard metals" or "cermets." It is conceivable that the hard material coating incorporates or consists of such a composite material.

[0024] In particular, hard materials often have good tribological properties, which can benefit the present process.

[0025] Advantageously, at least one hard material within the meaning of the present disclosure may be selected from the group consisting of diamond, nitrides - in particular boron nitride, silicon nitride, titanium nitride -, carbides - in particular silicon carbide, tungsten carbide, boron carbide, titanium carbide -, and tantalum oxide.

[0026] Advantageously, at least one hard-coated forming section of the forming tool may have a surface hard coating consisting of diamond-like carbon (DLC). Such a DLC coating is characterized in particular by high surface hardness and a high abrasion coefficient combined with a low coefficient of friction.

[0027] DLC hard coatings can be advantageously applied to a substrate, especially a metallic one, of the forming tool, particularly the forming section, using various technologies such as PVD ("Physical Vapor Deposition") or PACVD ("Plasma Assisted Chemical Vapor Deposition").

[0028] In an embodiment of the invention, during step c), at least one surface area of ​​the inside of the aluminum can slides along at least one forming section of the forming tool. The inside of the aluminum can, which is particularly bare, and the ceramic and / or hard-coated forming section can form a tribological system that utilizes the aforementioned advantageous properties of the ceramic and / or hard-coated forming section with regard to a desirablely low forming friction.

[0029] In a further embodiment of the invention, during step c), at least one surface area of ​​the outer surface of the aluminum can slides along at least one forming section of the forming tool. The outer surface of the aluminum can can be decorated and / or painted.

[0030] Advantageously, during forming, one surface area of ​​the inside of the aluminum can can slide along one forming section of the forming tool, while another surface area of ​​the outside of the aluminum can slides along another forming section of the forming tool. In other words, a circumferential wall of the aluminum can, with both an outside and an inside, can be positioned between one forming section of the forming tool and the other forming section of the forming tool such that one surface area of ​​the inside slides along one forming section and another surface area of ​​the outside slides along the other forming section to form the aluminum can.

[0031] It is advisable that at least the forming section which comes into contact with the inside of the aluminum can during forming be ceramic and / or hard-coated. In particular, the other forming section, which comes into contact with the outside of the aluminum can during forming, may also be ceramic and / or hard-coated, especially to protect any decoration and / or exterior paintwork of the aluminum can during forming, and more specifically to prevent damage, scratching, and / or smearing.

[0032] It is conceivable that only the forming section which comes into contact with the inside during the forming of the aluminum raw can is ceramic and / or hard-coated.

[0033] In a further embodiment of the invention, the forming process according to step c) includes a necking of the aluminum can, in particular wherein the necking creates a can shape and / or a can shoulder and / or a can neck of the aluminum can. Alternatively or additionally, the forming process according to step c) includes a crimping of the aluminum can to create a crimped edge, in particular a rolled edge. The crimped edge can in particular be created opposite a can bottom of the aluminum can, in particular such that the crimped edge borders a can opening of the aluminum can.

[0034] Advantageously, during the necking process in step c), the aluminum can is narrowed or tapered in diameter in the area of ​​its open end compared to the rest of the aluminum can, which is not deformed in the process, so that the can neck is created.

[0035] The "can shape" created during the necking process can be a narrowing of the aluminum can between its base and shoulder. This narrowing might, for example, be a concave shape.

[0036] A can shoulder created during the necking process can be formed between the can neck and a waistline of the aluminum can.

[0037] In a further embodiment of the invention, the surface area of ​​the aluminum can, in particular the respective surface area, is lubricated to reduce friction before and / or during the forming process according to step c). Alternatively or additionally, the forming section of the forming tool, in particular the section corresponding to the respective surface area, is lubricated to reduce friction before and / or during the forming process according to step c).

[0038] For friction-reducing lubrication, it is advantageous to apply lubricant at least, and in particular exclusively, to the inside. In particular, friction-reducing lubrication can be achieved without applying lubricant to the outside. Lubrication can be carried out in such a way that no lubricant, or at most only unintentionally, reaches the outside.

[0039] Friction-reducing lubrication, particularly the application of lubricant, is expediently achieved through minimum quantity lubrication. With minimum quantity lubrication, a particularly small quantity of a lubricant, especially in aerosol form as a mixture with compressed air, can be delivered to the relevant point of action, for example by means of nozzles.

[0040] It is advantageous to apply at least or exclusively to lubricate at least one surface area of ​​the inside of the aluminum can and / or the forming section of the forming tool designed to contact this surface area in a friction-reducing manner.

[0041] In a further embodiment of the invention, a lubricant that is volatile, particularly under normal conditions, is used to lubricate the surface area of ​​the aluminum can and / or the forming section of the forming tool. The volatile, and in particular highly volatile, lubricant can evaporate at least partially or completely before the aluminum can is filled with its contents. For example, a stamping and / or drawing oil can be used as such a volatile lubricant.

[0042] In a further embodiment of the invention, a lubricant that is inert, particularly with respect to the filling material, is used to lubricate the surface area of ​​the aluminum can and / or the forming section of the forming tool. In particular, the inert lubricant can be selected such that it does not chemically react with the filling material. In this way, it is advantageously avoided that the filling material is not impaired with regard to its intended properties by the lubricant used.

[0043] It is advisable to use a lubricant that is safe from a health and / or environmental perspective. Such a lubricant can be a synthetic lubricant or a vegetable-based lubricant. The use of vegetable-based lubricants, which may have lower thermal stability compared to synthetic lubricants, can be advantageous because the reduced friction resulting from the ceramic and / or hard-coated surface of the forming section may lead to less heat generation during forming. This can help counteract thermal decomposition of the lubricant due to frictional heat.

[0044] In a further embodiment of the invention, at least part of a lubricant used to lubricate the surface area of ​​the aluminum can is not removed after step c), in particular from the inside.

[0045] In a further embodiment of the invention, at least a portion of a lubricant used to lubricate the surface area of ​​the aluminum can, which is not removed after step c), particularly from the inside, is used as a component of the filling material. In particular, the portion of the lubricant that is not removed can be a functional component of the filling material composition or be used as a functional component of the filling material composition.

[0046] Polypropylene glycol monobutyl ether ("Fluid AP") is a lubricant that can be used as a component of the filler material. Polypropylene glycol monobutyl ether can advantageously provide lubrication and, as a component of cosmetics such as antiperspirants, can improve the consistency of the antiperspirant and / or the skin feel by preventing stickiness.

[0047] The lubricant, at least part of which is not removed from the inside, can be advantageously neutral with respect to the contents, so that the neutral lubricant does not become a functional component of the contents' composition, but also does not impair the contents' function. Such a neutral lubricant could, for example, be a medical-grade white oil. In particular, such a white oil would be a paraffin oil, which should be of medical and / or food-grade quality for the intended application.

[0048] In a further embodiment of the invention, the aluminum can produced according to the method is an aerosol can. The aluminum can can be a pressureless aerosol can, in particular in the form of a pump spray aerosol can, or a pressurized aerosol can.

[0049] A forming tool according to the invention is designed for a method according to the invention as described above. In particular, the forming tool is designed for use in the method according to the invention described above. In particular, the forming tool is used to carry out the method according to the invention as described above. The advantages of the method according to the invention mentioned above also apply to the forming tool according to the invention or can be achieved by means of the forming tool according to the invention. At least one forming section of the forming tool has a ceramic or consists of such a ceramic. In particular, the ceramic can be a zirconia ceramic and / or an aluminum oxide ceramic. Alternatively or additionally, at least one forming section of the forming tool has a surface hard coating.In particular, the surface hard coating contains or consists of diamond-like carbon.

[0050] The forming tool is essentially a conizing device for necking the aluminum can blank to create a can shape and / or a can shoulder and / or a can neck. The conizing device can also be referred to synonymously as a "conification unit".

[0051] Alternatively or additionally, the forming tool can be a flanging device for flanging the aluminum can to create a, in particular rolled, flanged edge of the aluminum can.

[0052] Advantageously, the forming tool, in particular the butting device, can comprise a die and a pilot, each with a forming section. Specifically, the forming section of the pilot is the section that comes into contact with the inside of the aluminum can during forming. The forming section of the die can be a different section that comes into contact with the outside of the aluminum can. The forming process according to step c) of the method can be carried out as follows: First, a can shoulder and a can neck can be produced from the essentially cylindrical basic shape of the aluminum can. The can shoulder can be formed in several steps using the die and supporting pilot. Subsequently, an opening edge on the can neck can be crimped outwards.It is advantageous for the surfaces of both the pilot and the die facing the aluminum raw can during forming to be ceramic and / or hard-coated, especially with Diamond-Like Carbon.

[0053] Under certain circumstances, the forming tool, especially for flanging, may be or have a rotary flanging tool or a broaching tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Further advantages and features of the invention will become apparent from the claims and from the following description of preferred embodiments of the invention, which are illustrated with reference to the drawings. In this context, identical reference numerals refer to identical, similar, or functionally equivalent components.

[0055] It is understood that the features mentioned above and those to be explained below can be used not only in the combinations specified, but also in other combinations or on their own, without leaving the scope of the present invention. Fig. 1 shows a rough schematic of the process of an embodiment of a method according to the invention for manufacturing an aluminum can, Fig. 2 shows a schematic sectional view of an embodiment of a forming tool according to the invention, which is used to carry out the method according to Fig. 1 Fig. 3 shows an enlarged detail of the schematic sectional view according to Fig. 2 , Fig. 4 shows a further embodiment of a forming tool according to the invention, which is used for the method according to Fig. 1 Fig. 5 shows a roughly schematic sectional view of a process carried out according to Fig. 1 reshaped aluminum raw can and Fig. 6 in a rough schematic sectional view, starting from the representation according to Fig. 5 Further reshaped aluminum raw can. DETAILED DESCRIPTION OF THE EXECUTION EXAMPLES

[0056] A process is used to manufacture an aluminum can designed for storing a contents. Specifically, the aluminum can is manufactured during the execution of the process.

[0057] The process includes a step a) in which an aluminum can 2 is provided. The aluminum can 2 has an unpainted inner surface 3. The unpainted inner surface 3 is intended to define the interior space of the can, within which the contents are stored after the aluminum can has been manufactured.

[0058] The method includes a step b) according to which a forming tool 4 is provided. The forming tool 4 is designed for the method of manufacturing the aluminum can. The forming tool 4 can therefore be used in carrying out the method and / or be configured for such use.

[0059] The forming tool 4 has at least one ceramic and / or hard-coated forming section 5, 5A, 5B. The forming tool 4 can have several forming sections 5, 5A, 5B, of which at least one or more or all are ceramic and / or hard-coated.

[0060] The process has a step c), according to which the provided aluminum can 2 is formed using the provided forming tool 4. During the forming process, at least a surface area 6, 6A, 6B of the aluminum can 2 slides along the forming section 5, 5A, 5B of the forming tool 4.

[0061] A forming section 5, 5A, 5B is in particular to be understood as a respective area of ​​the forming tool 4 which comes into sliding contact with the inside 3 and / or with an outside 7 of the aluminum can 2 during the forming of the aluminum can 2.

[0062] For example, at least one forming section 5, 5A, 5B of the forming tool 4 has or consists of a ceramic K. The ceramic K can be a zinc oxide ceramic and / or an aluminum oxide ceramic. Alternatively or additionally, at least one forming section 5, 5A, 5B of the forming tool 4, for example, another or the same, has a surface hard coating H. The surface hard coating H can have or consist of diamond-like carbon.

[0063] For example, during step c), i.e., during forming, at least one surface area 6, 6A of the inner surface 3 of the aluminum can 2 slides along at least one forming section 5, 5A of the forming tool 4. The ceramic and / or hard-coated design of the forming section 5, 5A can advantageously influence forming friction, so that the surface area 6, 6A of the inner surface 3 of the aluminum can 2 can slide along the forming section 5, 5A particularly gently.

[0064] For example, when performing step c), i.e., during the forming process, at least one surface area 6, 6B of the outer surface 7 of the aluminum can 2 – in this case different from the surface area 6, 6A of the inner surface 3 – slides along at least one forming section 5, 5B of the forming tool 4 – in this case different from the forming section 5, 5A.

[0065] The outer surface 7 can be decorated, for example, with a design. Alternatively or additionally, the outer surface 7 can be painted, i.e., provided with an exterior coating. The forming section 5, 5B, intended for sliding along the outer surface 7, does not necessarily have to be ceramic and / or hard-coated. However, to protect the decoration and / or the exterior coating of the outer surface 7, it may be advantageous if the forming section 5, 5B is ceramic and / or hard-coated.

[0066] For example, the forming process according to step c) involves necking the aluminum can 2. Necking creates a can shape, specifically a waist, of the aluminum can 2. Alternatively or additionally, necking creates a can shoulder 11 of the aluminum can 2. Alternatively or additionally, necking also creates a can neck 8 of the aluminum can 2.

[0067] Advantageously, during the necking process in step c), a can shape, a can shoulder 11, and a can neck 8 can be produced such that the can shoulder 11 is formed along an opening direction of the aluminum can 2, pointing away from a can base, between the can shape and the can neck 8. The can shoulder 11 can project relative to the can shape and the can neck 8 perpendicular to the opening direction of the aluminum can 2. In other words, the aluminum can 2 can be reduced in diameter and / or constricted and / or tapered in the area of ​​the can shape and the can neck 8 relative to the can shoulder 11.

[0068] Alternatively or additionally, the forming process according to step c) includes, for example, a crimping process. Crimping creates, for example, a crimped edge 9 on the aluminum can 2. The crimped edge 9 can be rolled over, particularly outwards. Specifically, the crimped edge 9 can be created at an opening edge of the aluminum can 2. In this case, the can neck 8 terminates along the opening direction at the crimped edge 9 on one side and at the can shoulder 11 on the other.

[0069] The forming tool 4 can – as in the case of the Fig. 2 and 3 - be equipped with a verification system. In this case, the verification system includes a clamping device for securely fixing the aluminum can 2, particularly in the area of ​​its can base. The forming tool 4 is, in the case of the Fig. 2 and 3The forming tool 4 is designed as a conizing device for conizing the fixed aluminum can 2. It can be configured for conizing a section, particularly an open end section opposite the base of the aluminum can 2, of a circumferential wall of the fixed aluminum can 2, especially if the section is not fixed.

[0070] For example, before forming according to step c), the surface area 6, 6A, 6B of the aluminum can 2 is lubricated to reduce friction, in particular by means of minimum quantity lubrication. Alternatively or additionally, the surface area 6, 6A, 6B of the aluminum can 2 can be lubricated to reduce friction during forming according to step c), for example by means of minimum quantity lubrication. Furthermore, additionally or alternatively, before forming according to step c), the forming section 5, 5A, 5B of the forming tool 4 can be lubricated to reduce friction, for example by means of minimum quantity lubrication. Furthermore, additionally or alternatively, during forming according to step c), the forming section 5, 5A, 5B of the forming tool 4 can be lubricated to reduce friction, in particular by means of minimum quantity lubrication.

[0071] It is understood that it may be advantageous if only one or individual surface areas 6, 6A, 6B and / or only one or individual forming sections 5, 5A, 5B can be lubricated to reduce friction. However, it is also conceivable that all surface areas 6, 6A, 6B and / or all forming sections 5, 5A, 5B are lubricated to reduce friction.

[0072] It can be particularly advantageous, for example, if the friction-reducing lubrication is applied exclusively to the inner surface area 6, 6A by means of lubricant application. Lubrication can also occur without, in particular without, direct and / or intentional lubricant application to the outer surface 7. It may be possible, under certain circumstances, that lubricant 10 applied directly only to the inner surface 3 reaches the outer surface 7, especially unintentionally or as a side effect. Such a side effect may, in some cases, be intentional and / or advantageous.

[0073] For example, a volatile lubricant 10 is used to lubricate the relevant surface area 6, 6A, 6B of the aluminum can 2 and / or the relevant forming section 5, 5A, 5B of the forming tool 4. In particular, the volatile lubricant 10 is highly volatile under normal conditions. The volatile lubricant 10 can evaporate at least partially or even completely before the aluminum can is filled with the contents. Therefore, any interaction between the volatile lubricant 10 and the contents can be minimized or even completely avoided.

[0074] For example, an inert lubricant 10 is used to lubricate the surface area 6, 6A, 6B of the aluminum can 2 and / or the forming section 5, 5A, 5B of the forming tool 4. In particular, the inert lubricant 10 is inert with respect to the filling material. This can additionally or alternatively counteract any negative influence of the lubricant 10 on the properties of the filling material.

[0075] For example, at least a portion of the lubricant 10 used to lubricate the surface areas 6, 6A, 6B of the aluminum can 2 is not removed after step c). In this case, at least a portion of the lubricant 10 used to lubricate the inner surface areas 6, 6A of the aluminum can 2 that is not removed after step c) can be used as a component of the filling material. Therefore, a desired interaction between the lubricant 10 and the other components of the filling material can occur, such that the lubricant 10 and the other components together form a desired composition of the filling material.

[0076] Alternatively or additionally, it is conceivable that the lubricant 10, in particular an unremoved and / or different part of the lubricant 10, is neutral with respect to the filler material. In this case, the lubricant 10 used does not become at least partially a functional component of the filler material's composition, but also does not impair the desired properties of the filler material.

[0077] The aluminum can produced according to the process is, for example, an aerosol can. The aluminum can can be a pressureless aerosol can, particularly in the form of a pump-spray aerosol can. "Pressureless" can mean that the internal pressure, especially between pump strokes, essentially corresponds to the ambient air pressure. Alternatively, the aluminum can be a pressurized aerosol can, particularly where the internal pressure is greater than the ambient air pressure and / or serves to propel the contents as an aerosol into the environment.

Claims

1. A method for manufacturing an aluminum can designed for storing a filling material, comprising the steps of: a) providing an aluminum can blank (2) having an unpainted inner surface (3); b) providing a forming tool (4) having at least one ceramic and / or hard-coated forming section (5, 5A, 5B); and c) forming the provided aluminum can blank (2) using the provided forming tool (4), wherein during the forming process at least one surface area (6, 6A, 6B) of the aluminum can blank (2) slides along the forming section (5, 5A, 5B) of the forming tool (4).

2. Method according to the preceding claim, - wherein, during the execution of step c), at least a surface area (6, 6A) of the inside (3) of the aluminium raw can (2) slides along at least one forming section (5, 5A) of the forming tool (4).

3. Method according to one of the preceding claims, - wherein, in carrying out step c), at least one, in particular another, surface area (6, 6B) of an outer surface (7) of the aluminum can (2) that is decorated and / or painted, slides along at least one, in particular another, forming section (5, 5B) of the forming tool (4).

4. Method according to one of the preceding claims, - wherein the forming according to step c) comprises a necking to produce a can shape and / or a can shoulder (11) and / or a can neck (8) of the aluminium raw can (2); and / or - wherein the forming according to step c) comprises a flanging to produce a, in particular rolled, flanged edge (9) of the aluminium raw can (2).

5. Method according to one of the preceding claims, - wherein before and / or during the forming according to step c) the surface area (6, 6A, 6B) of the aluminium raw can (2) and / or the forming section (5, 5A, 5B) of the forming tool (4) is lubricated to reduce friction, in particular by minimum quantity lubrication, - in particular wherein a lubricant application for the friction-reducing lubrication takes place at least or exclusively on the inside.

6. Method according to one of the preceding claims, - wherein a lubricant (10) that is volatile, particularly under normal conditions, is used to lubricate the surface area (6, 6A, 6B) of the aluminium raw can (2) and / or the forming section (5, 5A, 5B) of the forming tool (4), - particularly wherein the volatile lubricant (10) evaporates at least partially or completely before the aluminium can is filled with filling material.

7. Method according to one of the preceding claims, - wherein a lubricant (10) that is inert, in particular with respect to the filling material, is used to lubricate the surface area (6, 6A, 6B) of the aluminium raw can (2) and / or the forming section (5, 5A, 5B) of the forming tool (4).

8. Method according to one of the preceding claims, - wherein at least a part of a lubricant (10) used to lubricate the surface area (6, 6A, 6B) of the aluminium raw can (2) is not removed after step c) has been carried out.

9. Method according to one of the preceding claims, - wherein at least a part of a lubricant (10) used to lubricate the surface area (6, 6A) of the aluminium can (2) which is not removed after step c) has been carried out is used as a, in particular functional, component of the filling material.

10. Method according to any of the preceding claims, wherein the aluminium can produced according to the method is an aerosol can, in particular a non-pressurized aerosol can or a pressurized aerosol can.

11. Forming tool (4), designed for a method according to one of the preceding claims, - wherein at least one forming section (5, 5A, 5B) of the forming tool (4) has a ceramic (K), in particular a zirconia ceramic and / or an aluminum oxide ceramic, or consists of such a ceramic (K); and / or - wherein at least one forming section (5, 5A, 5B) of the forming tool (4) has a surface hard coating (H), in particular having or consisting of diamond-like carbon.

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