Metal bottle for filling craft beer

Abstract

The utility model discloses a metal bottle for filling craft beer, and relates to the technical field of beverage filling containers. The metal bottle can for filling craft beer comprises a can body, the can body is of an integrally-formed structure and comprises a can bottom, a can body part, a spherical necking part and a can opening part which are sequentially connected from bottom to top, and the wall thickness of the spherical necking part and the wall thickness of the can bottom are both larger than the wall thickness of the can body part; one end, far away from the spherical necking part, of the tank opening part is obliquely bent downwards from inside to outside to form a flanging part; the packaging part is arranged above the can body and comprises a pull ring cover and a sealing gasket, the sealing gasket is arranged on the side, close to the can body, of the pull ring cover, the pull ring cover covers the opening of the can opening part and is connected with the lower portion of the turnup part in a buckled mode, and the sealing gasket makes contact with the upper portion of the turnup part in an attached mode to form a sealing structure. The filling device is strong in pressure resistance and high in sealing performance, and can meet the filling requirement of craft beer.

Description

Technical Field

[0001] The utility model relates to the technical field of beverage filling containers, and particularly relates to a metal bottle can for filling craft beer. Background Art

[0002] Beer is not only a beverage that provides energy for people, but also a popular social drink. With the development of the economy and the improvement of living standards, consumers' demand for beer has gradually changed from low price to high quality. Therefore, the beer market shows a trend of rapid development of high-end products, namely craft beer.

[0003] Since the production process of craft beer has the following characteristics: no dilution, no filtration, no sterilization and pure raw pulp, and moreover, craft beer needs to be fermented again in the tank, the inside of the tank for filling craft beer needs to withstand higher pressure. Based on these characteristics of craft beer, there is an urgent need to develop a matching filling container with high pressure resistance and sealing performance to meet the demand for batch filling of craft beer. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a metal bottle can for filling craft beer, which has strong pressure resistance and high sealing performance and can meet the filling requirements of craft beer.

[0005] An embodiment of the utility model provides a metal bottle can for filling craft beer, which comprises:

[0006] A tank body, which is an integrally formed structure. The tank body comprises a tank bottom, a tank body part, a spherical necking part and a tank mouth part connected in sequence from bottom to top. The wall thickness of the spherical necking part and the wall thickness of the tank bottom are both greater than the wall thickness of the tank body part. One end of the tank mouth part far away from the spherical necking part bends obliquely downward from inside to outside to form a flanging part;

[0007] An encapsulation part, which is arranged above the tank body. The encapsulation part comprises a pull-ring cover and a sealing gasket. The sealing gasket is arranged on the side of the pull-ring cover close to the tank body. The pull-ring cover covers the opening of the tank mouth part and is snap-connected with the lower part of the flanging part. The sealing gasket is in close contact with the upper part of the flanging part to form a sealing structure.

[0008] The metal bottle can for filling craft beer according to the embodiment of the utility model has at least the following beneficial effects: the can body adopts an integrally formed structure without welds, which makes the metal bottle can more beautiful and hygienic, and the internal pressure bearing capacity is strong, allowing the craft beer to be fermented again in the can body, so that the metal bottle can is suitable for filling craft beer; in the can body structure, the spherical neck and the bottom of the can are both larger than the can body in terms of wall thickness, which can improve the internal pressure bearing capacity of the can body and meet the required capping force when the can body is capped; the can mouth is provided with a flange portion, which can meet the packaging and sealing requirements of the pull ring cover, and after the pull ring cover is assembled on the can body, the sealing gasket on the pull ring cover can fit and contact the upper part of the flange portion, so that a sealing structure is formed between the sealing gasket and the flange portion, and when the craft beer is fermented again in the metal bottle can, the pull ring cover will be subjected to a certain upward pressure, at this time, the sealing gasket can always maintain a state of contact with the flange portion, thereby improving the sealing performance and meeting the packaging requirements of craft beer.

[0009] In some embodiments of the present invention, the spherical neck portion is a multi-stage necking structure, the diameter of the spherical neck portion decreases from bottom to top, and the wall thickness of the spherical neck portion increases from bottom to top.

[0010] In some embodiments of the present invention, a spherical convex portion is formed by protruding upward from the middle portion of the bottom of the tank.

[0011] In some embodiments of the utility model, the flange portion includes a first bend portion, a second bend portion, an extension portion and a third bend portion, the upper end of the can mouth portion is bent outward 90° to form the first bend portion, the outer end of the first bend portion is bent downward 90° to form the second bend portion, the lower end of the second bend portion extends linearly downward to form the extension portion, the lower end of the extension portion is bent inward 90° to form the third bend portion, the sealing gasket abuts against the second bend portion, and the pull ring cover is snap-connected with the third bend portion.

[0012] In some embodiments of the present invention, the bending radius of the first curved portion is smaller than the bending radius of the second curved portion, and larger than the bending radius of the third curved portion.

[0013] In some embodiments of the present invention, the peripheral side wall of the sealing gasket is inclined outward and protrudes downward to form a circular ring-shaped sealing protrusion, and the inner peripheral surface of the sealing protrusion is a concave arc surface and can be in contact with the upper part of the second curved portion.

[0014] In some embodiments of the present invention, a groove with an opening facing downward is provided in the middle of the sealing gasket.

[0015] In some embodiments of the present utility model, the pull-ring cap includes a cap body and a pull ring. The mouth of the cap body is arranged downward, the sealing gasket is arranged on the inner upper wall surface of the cap body, a connecting portion is formed by the side wall of the cap body extending downward, and the lower end of the connecting portion is fixedly connected to the pull ring.

[0016] In some embodiments of the present utility model, the lower end of the cap body bends inward to form a fourth bending portion. A plurality of serrated portions are arranged on the peripheral side wall of the fourth bending portion, and the fourth bending portion is snap-connected to the lower part of the flanging portion.

[0017] In some embodiments of the present utility model, the can body is an aluminum workpiece.

[0018] Other features and advantages of the present utility model will be described in the subsequent description. Moreover, some of them will become obvious from the description, or be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be realized and obtained by the structures specifically pointed out in the description, the claims, and the drawings. Description of the Drawings

[0019] Figure 1 is a three-dimensional structural schematic diagram of a metal bottle can for filling craft beer in a sealed state according to an embodiment of the present utility model;

[0020] Figure 2 is a three-dimensional structural schematic diagram of a metal bottle can for filling craft beer in an opened state according to an embodiment of the present utility model;

[0021] Figure 3 is a cross-sectional schematic diagram of the can body in a metal bottle can for filling craft beer according to an embodiment of the present utility model;

[0022] Figure 4 is a cross-sectional schematic diagram of the pull-ring cap in a metal bottle can for filling craft beer according to an embodiment of the present utility model;

[0023] Figure 5 is a cross-sectional schematic diagram of a metal bottle can for filling craft beer according to an embodiment of the present utility model;

[0024] Figure 6 is Figure 5 an enlarged schematic diagram of part A in

[0025] Figure 7 is a cross-sectional schematic diagram of the flanging portion in a metal bottle can for filling craft beer according to an embodiment of the present utility model;

[0026] Figure 8 is a front view of a metal bottle can for filling craft beer according to another embodiment of the present utility model.

[0027] Reference numerals: 100, tank body; 110, tank body part; 120, spherical necking part; 130, tank bottom; 131, spherical convex part; 140, tank mouth part; 150, flanging part; 151, first bending part; 152, second bending part; 153, extension part; 154, third bending part; 200, encapsulation part; 210, cover body; 211, fourth bending part; 220, pull ring; 230, connecting part; 240, sealing gasket; 241, sealing convex part; 242, groove. Detailed implementation manners

[0028] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0029] In the description of the present utility model, it should be understood that the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] Next, refer to Figures 1 to 8 Describe a metal bottle can for filling craft beer according to an embodiment of the present utility model.

[0032] As Figures 1 to 8 shown, the metal bottle can for filling craft beer according to an embodiment of the present utility model has the advantages of strong pressure resistance, high sealing performance, convenient opening, and easy transportation, and can be used as a beer container, especially as a packaging for craft beer, and can meet the filling requirements of craft beer.

[0033] The structure of the metal bottle can for filling craft beer includes a tank body 100 and an encapsulation part 200.

[0034] The tank body 100 is of an integrally formed structure. Moreover, in this embodiment, the tank body 100 is made of aluminum, that is, the tank body 100 is an aluminum can, making the tank body 100 have the advantages of light weight, corrosion resistance, durability, environmental protection and recyclability, as well as good economy and sealing performance. Of course, it is not excluded that the tank body 100 is made of other metal materials. The cross-sectional shape of the tank body 100 is circular. The structure of the tank body 100 includes a tank body part 110, a spherical necking part 120, a tank bottom part 130 and a tank mouth part 140.

[0035] Among them, the tank bottom part 130, the tank body part 110, the spherical necking part 120 and the tank mouth part 140 are arranged and connected in sequence from bottom to top, thus forming the tank body 100 with the tank mouth facing upwards and open. The tank body 100 has an inner cavity with a certain volume and can hold beverages such as craft beer. In this embodiment, the spherical necking part 120 is a multi-stage necking structure, that is, the spherical necking part 120 is formed by multi-stage necking treatment. The part with a larger diameter of the spherical necking part 120 is arranged close to the tank body part 110, and the part with a smaller diameter of the spherical necking part 120 is arranged close to the tank mouth part 140, that is, the diameter of the spherical necking part 120 shows a trend of increasing from top to bottom.

[0036] Moreover, the wall thickness of the spherical necking part 120 is greater than that of the tank body part 110, and the wall thickness of the tank bottom part 130 is greater than that of the tank body part 110. Therefore, the spherical necking part 120 can withstand greater axial pressure and meet the capping force requirements during the capping process of the tank body 100. The tank bottom part 130 also has stronger pressure-bearing capacity, promoting higher internal pressure resistance of the tank body 100, so as to meet the requirement that craft beer can be fermented again in the tank body 100 after being filled into the metal bottle can, enabling the craft beer to brew charming aromas and flavors with rich, complex and lingering aftertastes.

[0037] It can be understood that during the processing and production of the tank body 100, the rolled aluminum is first processed by a cup punching machine to form a cup body, and then the cup body is processed by a stretching machine for stretching and thinning to form a barrel body. The mouth part of the barrel body is completed through processes such as trimming, cutting, cleaning, drying, printing, drying, internal coating, drying, multi-stage necking, and visual inspection, thus manufacturing the tank body 100. Among them, the spherical necking part 120 can be formed by a multi-stage necking machine (or necking diameter machine). Since the tank body 100 is integrally formed and basically consistent with the forming principle of traditional pull tabs, it can avoid the existence of seams in three-piece cans, making the tank body 100 more beautiful and hygienic, and can meet the packaging requirements of craft beer.

[0038] In addition, the tank body 100 further includes a flange portion 150, and the flange portion 150 is connected to the tank mouth portion 140. Specifically, one end of the tank mouth portion 140 away from the spherical neck portion 120 (i.e., the upper end of the tank mouth portion 140) is bent obliquely downward from the inner side of the tank mouth portion 140 to the outer side of the tank mouth portion 140 to form the flange portion 150. When viewed from the top and bottom, the flange portion 150 is in a circular ring shape. It is understood that the tank mouth portion 140 can be flanged by a crimping machine, so that the flange portion 150 is manufactured on the tank mouth portion 140. The upward surface of the flange portion 150 is a convex arc surface, and the downward surface of the flange portion 150 is a concave arc surface.

[0039] The packaging member 200 is arranged above the can body 100. The structure of the packaging member 200 includes a pull ring cover and a sealing gasket 240. Among them, the sealing gasket 240 is arranged on the side of the pull ring cover close to the can body 100, and the sealing gasket 240 is fixed to the pull ring cover. The sealing gasket 240 can be made of non-metallic materials such as PVC (polyvinyl chloride) and PE (polyethylene), and assembled on the pull ring cover by hot pressing. The pull ring cover covers the opening of the can mouth part 140, and the pull ring cover is snap-connected with the lower part of the flange part 150, so that the pull ring cover is fixed relative to the can body 100, and at the same time, the sealing gasket 240 is in contact with the upper part of the flange part 150, so that a sealing structure is formed between the sealing gasket 240 and the flange part 150.

[0040] It is understandable that the diameter of the pull ring cover can be but not limited to 38 mm, and the size design of the can mouth 140 and the flange 150 can meet the packaging and sealing requirements of the pull ring cover. The pull ring cover has a beautiful and novel appearance, and is easy to open. The use of the pull ring cover to package the can body 100 not only allows the metal bottle can to meet the pressure resistance and sealing requirements of craft beer, but also makes the metal bottle can environmentally friendly, novel and fashionable, beautiful in appearance and easy to open, which is more attractive to consumers. For consumers, the pull ring cover can be opened without the help of tools, which reduces the difficulty of opening. In addition, the filling plant uses the metal bottle can of this embodiment, which is convenient for filling, with less equipment changes, less investment, and convenient for conversion.

[0041] In some embodiments, Figure 3 and Figure 5 As shown, the spherical necking portion 120 is a multi-stage necking structure, the diameter of the spherical necking portion 120 decreases from bottom to top, and the wall thickness of the spherical necking portion 120 increases from bottom to top.

[0042] It is understandable that the spherical neck portion 120 undergoes multi-stage necking processing, and each time the neck diameter is shrunk, the material of the spherical neck portion 120 will be correspondingly thickened, causing the wall thickness of the spherical neck portion 120 to be much thicker than the wall thickness of the can body 110, further improving the axial pressure-bearing capacity of the can body 100, and well meeting the requirements of the capping force required for capping.

[0043] In some embodiments, Figure 3 and Figure 5 As shown, the middle portion of the tank bottom 130 protrudes upward to form a spherical protrusion 131, that is, the bottom surface of the tank body 100 is in a concave state.

[0044] It is understandable that the tank bottom 130 is made by stretching, and the wall thickness of the tank bottom 130 is the thickness of the rolled aluminum raw material, while the wall thickness of the tank bottom 130 is greater than the wall thickness of the tank body 110, so the tank body 110 is subjected to a stretching and thinning process. Since the tank bottom 130 is provided with a spherical protrusion 131, during the secondary fermentation of the craft beer in the tank body 100, the tank bottom 130 will be subjected to a certain downward pressure. At this time, the upwardly protruding spherical protrusion 131 can effectively offset the downward pressure, so that the tank bottom 130 is not easy to deform, and the pressure bearing performance of the tank bottom 130 is further improved. The wall thickness of the spherical neck 120, the tank bottom 130 and the tank body 110 can be set according to actual needs, and no specific limitation is made here.

[0045] In addition, the can body 110 is thicker than that of a traditional can, so that the thickness and strength of the can body 110 are increased, making the internal pressure resistance of the can body 100 stronger.

[0046] In this embodiment, if Figures 5 to 7 As shown, the structure of the flange portion 150 includes a first bent portion 151 , a second bent portion 152 , an extending portion 153 and a third bent portion 154 .

[0047] Among them, the circular upper end of the can mouth portion 140 bends outward by 90° to form a first bending portion 151. When viewed in the vertical direction, the first bending portion 151 is circular. The inner end of the first bending portion 151 (i.e., the inner circle of the first bending portion 151) is integrally formed with the can mouth portion 140. The outer end of the first bending portion 151 (i.e., the outer circle of the first bending portion 151) bends downward by 90° to form a second bending portion 152. When viewed in the vertical direction, the second bending portion 152 is circular. The upper end of the second bending portion 152 (i.e., the inner circle of the second bending portion 152) is integrally formed with the first bending portion 151. The lower end of the second bending portion 152 (i.e., the outer circle of the second bending portion 152) extends linearly downward to form an extension portion 153. When viewed in the vertical direction, the extension portion 153 is circular. The upper end of the extension portion 153 is integrally formed with the second bending portion 152. The lower end of the extension portion 153 bends inward by 90° to form a third bending portion 154. When viewed in the vertical direction, the third bending portion 154 is circular.

[0048] As Figure 7 shown, in this embodiment, the outer diameter D1 of the flanging portion 150 is 37.85 mm, the inner diameter D2 of the flanging portion 150 is 30.7 mm, and the height H of the flanging portion 150 is 4 mm. In addition, the capping limit diameter D3 of the can body 100 is less than D1 but greater than D2.

[0049] When the pull-tab lid is encapsulated on the can body 100, the sealing gasket 240 abuts against the second bending portion 152, so that a sealing structure is formed between the sealing gasket 240 and the second bending portion 152, preventing external gas from entering the can body 100 and preventing the craft beer in the can body 100 from leaking outwards. Moreover, the pull-tab lid is snap-connected to the third bending portion 154, so that the pull-tab lid is firmly fixed on the can body 100 and ensures that the sealing gasket 240 is always in close contact with the second bending portion 152.

[0050] Furthermore, as Figure 7 shown, the bending radius (i.e., the radius of curvature) R1 of the first bending portion 151 is less than the bending radius R2 of the second bending portion 152, and the bending radius R1 of the first bending portion 151 is greater than the bending radius R3 of the third bending portion 154. With such a design, the contact area between the second bending portion 152 and the sealing gasket 240 can be increased.

[0051] In this embodiment, the bending radius R1 of the first bending portion 151 is 1 mm, the bending radius R2 of the second bending portion 152 is 2.4 mm, and the bending radius R3 of the third bending portion 154 is 0.65 mm. Of course, the specific values of the bending radii of the first bending portion 151, the second bending portion 152, and the third bending portion 154 can be selected according to actual needs.

[0052] In this embodiment, asFigures 4 to 6 As shown, the sealing gasket 240 is provided with a sealing protrusion 241. Specifically, the peripheral side wall of the sealing gasket 240 is inclined outward and protrudes downward, thereby forming a sealing protrusion 241. When viewed from the top to the bottom, the sealing protrusion 241 is designed in a circular ring shape, and the sealing protrusion 241 is integrally formed with the sealing gasket 240. The inner peripheral surface of the sealing protrusion 241 is a concave arc surface. Specifically, the sealing protrusion 241 and the sealing gasket 240 jointly define a circular groove with an opening facing downward, and the opening of the circular groove is a bell mouth that gradually expands downward.

[0053] Furthermore, after the pull ring cover is assembled on the can body 100, the inner peripheral surface of the sealing protrusion 241 can be in contact with the upper portion of the second curved portion 152, such as Figure 6 As shown, when the craft beer in the can body 100 undergoes secondary fermentation, the internal pressure of the can body 100 rises, causing the pull ring cover to be subjected to upward pressure, and may cause the pull ring cover to have a tendency to bulge upward. At this time, since the inner circumferential surface of the sealing convex portion 241 on the sealing gasket 240 is a concave arc surface, the upper part of the second curved portion 152 in the flange portion 150 is a convex arc surface, the concave arc surface and the convex arc surface can cooperate and contact, thereby ensuring that the sealing gasket 240 and the flange portion 150 always maintain good contact, exerting an excellent sealing effect, and being able to meet the sealing requirements of craft beer.

[0054] Further, such as Figure 4 and Figure 6 As shown, a groove 242 is provided in the middle of the sealing gasket 240 , and the opening of the groove 242 is open downward. When viewed from the top and bottom directions, the groove 242 is circular.

[0055] In this embodiment, if Figure 2 , Figure 4 and Figure 8 As shown, the structure of the pull ring cover includes a cover body 210 and a pull ring 220. The cover body 210 is open downward, and the cover body 210 is made of a metal material such as aluminum. A sealing gasket 240 is arranged on the inner upper wall surface of the cover body 210, for example, the sealing gasket 240 is fixed on the cover body 210 by hot pressing. Moreover, any side wall of the cover body 210 extends downward to form a connecting portion 230, the connecting portion 230 is integrally formed with the cover body 210, and the lower end of the connecting portion 230 is fixedly connected to the pull ring 220. The pull ring 220 can be made of a plastic material.

[0056] Further, such as Figure 2 , Figure 4 and Figure 6As shown, the lower end of the cover body 210 is bent from the outside to the inside to form a fourth bending part 211. Moreover, a plurality of serrated parts are provided on the circumferential side wall of the fourth bending part 211, and the plurality of serrated parts are uniformly arranged around the circumference of the fourth bending part 211. The fourth bending part 211 is snap-connected to the lower part of the flanging part 150. Specifically, the inner circumferential surface of the fourth bending part 211 is in contact with the outer circumferential surface of the third bending part 154.

[0057] In other embodiments, as Figure 8 shown, in the structure of the pull-ring lid, the cover body 210 is only provided with the fourth bending part 211, but the fourth bending part 211 is not provided with serrated parts.

[0058] In the metal bottle can for filling craft beer provided by the embodiment of the present utility model, since the can body 100 adopts an integrally formed structure without weld seams, the metal bottle can is more beautiful and hygienic. Moreover, the metal bottle can has a strong internal pressure-bearing capacity, and can allow the craft beer to undergo secondary fermentation in the can body 100, making the metal bottle can suitable for filling craft beer.

[0059] In the unique structure of the can body 100, the spherical necking part 120 and the can bottom part 130 are both designed to have a larger wall thickness dimension than the can body part 110, so as to improve the internal pressure-bearing capacity of the can body 100 and meet the requirements of the capping force required for capping the can body 100.

[0060] Moreover, the can mouth part 140 is provided with a flanging part 150, so as to meet the packaging and sealing requirements of the pull-ring lid. In addition, after the pull-ring lid is assembled on the can body 100, the sealing gasket 240 on the pull-ring lid can abut against the flanging part 150, so that the sealing gasket 240 can be in close contact with the upper part of the flanging part 150, forming a sealing structure between the sealing gasket 240 and the flanging part 150. Then, when the craft beer undergoes secondary fermentation in the metal bottle can, the pull-ring lid will be subjected to a certain upward pressure. At this time, the sealing gasket 240 can always maintain the state of being in contact with the flanging part 150, improving the sealing performance, so as to meet the packaging requirements of the craft beer.

[0061] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0062] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A metal bottle or can for filling craft beer, characterized in that, Comprising: A tank body, which is an integrally formed structure. The tank body includes a tank bottom, a tank body part, a spherical necking part, and a tank mouth part that are connected in sequence from bottom to top. The wall thickness of the spherical necking part and the wall thickness of the tank bottom are both greater than the wall thickness of the tank body part. One end of the tank mouth part away from the spherical necking part is bent obliquely downward from the inside to the outside to form a flanging part. A sealing member, which is arranged above the tank body. The sealing member includes a pull-ring cover and a sealing gasket. The sealing gasket is arranged on the side of the pull-ring cover close to the tank body. The pull-ring cover covers the opening of the tank mouth part and is snap-connected to the lower part of the flanging part. The sealing gasket is in close contact with the upper part of the flanging part to form a sealing structure.

2. The metal bottle or can for filling craft beer according to claim 1, wherein The spherical necking part is a multi-stage necking structure. The diameter size of the spherical necking part decreases from bottom to top, and the wall thickness of the spherical necking part increases from bottom to top.

3. The metal bottle or can for filling craft beer according to claim 1, characterized in that, A spherical convex part protrudes upward at the middle position of the tank bottom.

4. The metal bottle or can for filling craft beer according to claim 1, characterized in that The flanging part includes a first bending part, a second bending part, an extension part, and a third bending part. The upper end of the tank mouth part is bent outward by 90° to form the first bending part. The outer end of the first bending part is bent downward by 90° to form the second bending part. The lower end of the second bending part extends linearly downward to form the extension part. The lower end of the extension part is bent inward by 90° to form the third bending part. The sealing gasket abuts against the second bending part, and the pull-ring cover is snap-connected to the third bending part.

5. The metal bottle or can for filling craft beer according to claim 4, characterized in that, The bending radius of the first bending part is smaller than the bending radius of the second bending part and larger than the bending radius of the third bending part.

6. The metal bottle or can for filling craft beer according to claim 5, wherein, The peripheral side wall of the sealing gasket is inclined outward and protrudes downward to form an annular sealing convex part. The inner peripheral surface of the sealing convex part is a concave arc surface and can be in close contact with the upper part of the second bending part.

7. The metal bottle or can for filling craft beer according to claim 6, characterized in that, A groove with an opening facing downward is provided at the middle position of the sealing gasket.

8. The metal bottle or can for filling craft beer according to claim 1, characterized in that, The pull-ring cover includes a cover body and a pull ring. The cover opening of the cover body faces downward. The sealing gasket is arranged on the inner upper wall surface of the cover body. The side wall of the cover body extends downward to form a connecting part. The lower end of the connecting part is fixedly connected to the pull ring.

9. The metal bottle or can for filling craft beer according to claim 8, wherein, The lower end of the cover body is bent inward to form a fourth bending part. A plurality of serrated parts are provided on the peripheral side wall of the fourth bending part. The fourth bending part is snap-connected to the lower part of the flanging part.

10. The metal bottle or can for filling craft beer according to claim 1, characterized in that, The tank body is an aluminum component.

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