Tank body of packaging container and packaging container

Abstract

The embodiment of the utility model provides a tank body of a packaging container and the packaging container, and relates to the technical field of packaging containers. The tank body comprises a tank body; the can mouth comprises a first connecting part, and the first connecting part is connected with the can body; the second connecting part is connected to the end, away from the can body, of the first connecting part, and the second connecting part is used for being connected with a can cover of the packaging container; the sealing part is connected with the second connecting part, and the sealing part extends towards the central axis in the radial direction of the second connecting part. According to the can body of the packaging container, by arranging the sealing part, the contact area between the can cover and the can mouth is increased, and therefore the sealing effect between the can cover and the can mouth is improved.

Description

Technical Field

[0001] The present application relates to the technical field of packaging containers, and in particular to a can body of a packaging container and a packaging container. Background Art

[0002] Packaging containers are commonly used devices for holding solids, liquids, etc. in daily life and industrial production. For example, metal cans are often used to hold food and beverages.

[0003] In the related art, a packaging container usually includes a can body and a can lid. The can body includes an integrally formed can body and can mouth. The can lid is threadedly connected to the can mouth. The end of the can mouth away from the can body is rolled outward along the radial direction of the can mouth to avoid cuts caused by the sharp edge of the can mouth.

[0004] However, the contact area between the can lid and the can mouth is small, resulting in poor sealing between the two. Utility Model Content

[0005] The present application provides a can body and a packaging container for a packaging container, which are used to solve the problem that the contact area between the can lid and the can mouth is small, resulting in poor sealing between the two.

[0006] In a first aspect, an embodiment of the present application provides a can body of a packaging container, comprising:

[0007] Can body;

[0008] Spout, the spout includes:

[0009] a first connecting portion, the first connecting portion being connected to the can body;

[0010] a second connecting portion, the second connecting portion being connected to an end of the first connecting portion facing away from the can body, the second connecting portion being used to connect to a can lid of the packaging container;

[0011] a first curled portion and a sealing portion, wherein the first curled portion connects the second connecting portion and the sealing portion, the first curled portion curls toward the central axis of the can body, the sealing portion extends radially toward the central axis of the can body, the radial direction is perpendicular to the central axis, and the sealing portion is used to abut against the can lid;

[0012] The second curled portion is connected to an end of the sealing portion facing away from the first curled portion, and the second curled portion is curled toward the can body.

[0013] In a possible embodiment, the sealing portion has an abutment surface facing away from the can body, the abutment surface is used to abut against the can cover, and the abutment surface is a flat surface, a serrated surface, or a wavy surface.

[0014] In a possible implementation manner, the sealing portion is annular, and the width of the sealing portion is 0.5 mm to 2 mm.

[0015] In a possible implementation manner, the inner diameter of the sealing portion is 20 mm to 50 mm; and the diameter of the mouth of the can is 28 mm to 58 mm.

[0016] In a possible implementation manner, the thickness of the sealing portion is 0.5 mm-2 mm.

[0017] In a possible embodiment, the sealing portion has an abutting surface facing away from the can body, the abutting surface is used to abut against the can cover, and the surface roughness of the abutting surface is 0.1 μm to 0.8 μm.

[0018] In a possible embodiment, the can spout further includes a third curled portion, the third curled portion is connected to an end of the second curled portion facing away from the sealing portion, and at least one of the second connecting portion and the sealing portion abuts against the third curled portion.

[0019] In a possible implementation manner, a curvature radius of the second curled portion is greater than a curvature radius of the third curled portion.

[0020] In a possible implementation manner, the first curled portion, the sealing portion, the second curled portion, and the third curled portion are integrally formed.

[0021] In a second aspect, an embodiment of the present application provides a packaging container, comprising a can body of any packaging container provided in the first aspect and a can cover connected to the can body.

[0022] The can body and packaging container provided in the embodiments of the present application are provided with a second connecting portion, which is used to connect to the can lid of the packaging container to achieve the connection between the can mouth and the can lid of the packaging container; by providing a first curled portion and a sealing portion, the sealing portion is connected to the second connecting portion through the first curled portion, so that the second connecting portion can stably support the sealing portion; and the sealing portion extends radially toward the central axis of the can body, so that the surface of the sealing portion facing away from the can body forms an additional contact surface. When the can lid is installed, the can lid contacts not only the second connecting portion but also the contact surface on the sealing portion, thereby increasing the contact area between the can lid and the can mouth, thereby improving the sealing effect between the two. Moreover, by arranging the sealing portion to extend radially toward the central axis of the can body, the sealing portion can be arranged without changing the size of the can mouth, so that the volume of the can mouth and the can lid is relatively small. By providing the first curled portion and the second curled portion, the first curled portion is connected between the second connecting portion and the sealing portion, and the second curled portion is connected to the end of the sealing portion facing away from the second connecting portion, so as to avoid cuts caused by the sharp edge of the can mouth. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the description, are used to explain the principles of the embodiments of the present application.

[0024] Figure 1 A schematic diagram of the structure of the packaging container provided in an embodiment of the present application;

[0025] Figure 2 for Figure 1 Schematic diagram of the structure of the middle tank mouth;

[0026] Figure 3 for Figure 2 A magnified view of point A;

[0027] Figure 4 for Figure 2 Schematic diagram of the formation process of the local structure of the middle tank mouth Figure 1 ;

[0028] Figure 5 for Figure 2 Schematic diagram of the formation process of the local structure of the middle tank mouth Figure 2 ;

[0029] Figure 6 for Figure 2 Schematic diagram of the structure of the local structure of the middle tank mouth after forming.

[0030] Description of reference numerals:

[0031] 10-tank body; 20-tank cover; 30-mold;

[0032] 100-can body;

[0033] 200 - can mouth; 210 - first connecting portion; 220 - second connecting portion; 230 - first curled portion; 240 - sealing portion; 241 - abutting surface; 250 - second curled portion; 260 - third curled portion;

[0034] 300-accommodation cavity;

[0035] 400-Tank mouth;

[0036] D1-diameter of the can mouth; D2-caliber of the can mouth; H-thickness of the sealing part; W-width of the sealing part; O-center axis of the can body; Z-radial direction of the can body.

[0037] To facilitate understanding of the solutions of the embodiments of the present application, the spline curves and arrows used in the drawings are explained here: the components indicated by the spline curves without arrows are solid components, that is, components with solid structures; the components indicated by the spline curves with arrows are virtual components, that is, components without solid structures.

[0038] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the embodiments of the present application in any way, but rather to illustrate the concepts of the present application for those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0040] It should be noted that, in this article, relational terms such as first and second are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In the description of the embodiments of the present application, it should be understood that the orientation or positional relationship (if any) indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" etc. is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a restriction on the embodiments of the present application. Moreover, the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not clearly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the phrase "comprising..." do not preclude the presence of other identical elements in the process, method, article, or device that includes the elements. If there is no conflict, the embodiments of the present application and the various features therein may be combined with each other and are all within the scope of protection of this application.

[0041] A packaging container is provided in an embodiment of the present application. Figure 1 A schematic diagram of the structure of a packaging container.

[0042] Specifically, see Figure 1 The packaging container includes a can body 10 and a can cover 20. The can body 10 has a accommodating cavity 300 for accommodating materials. The can cover 20 is connected to the can body 10 and closes the accommodating cavity 300 to prevent the materials in the accommodating cavity 300 from flowing out.

[0043] It should be noted that this embodiment does not limit the materials of the tank body 10 and the tank cover 20, and they can be selected according to specific needs. For example, the tank body 10 and the tank cover 20 are both metal parts or plastic parts.

[0044] It should also be noted that the present application does not limit the type of material contained in the containing chamber 300, and the material can be selected according to specific needs. For example, the material can be solid or fluid. Specifically, the material is food or beverage.

[0045] It is understandable that Figure 1 Only some components of the packaging container are shown schematically, and the actual shape, size, position and configuration of these components are not affected by the actual shape, size, position and configuration of the packaging container. Figure 1 The packaging container may also include Figure 1 More or fewer parts.

[0046] In the related art, the packaging container includes a can body and a can lid. The can body includes an integrally formed can body and can mouth. The can lid is threadedly connected to the can mouth. The end of the can mouth away from the can body is rolled outward along the radial direction of the can mouth to avoid cuts caused by the sharp edge of the can mouth.

[0047] However, the can lid and the can mouth are only in contact through the threads, and the contact area between the two is small, resulting in poor sealing between the two.

[0048] In order to solve the above technical problems, the present invention provides a can body of a packaging container. Figure 2 Schematic diagram of the structure of the can mouth 200 of the can body 10, Figure 3 for Figure 2 Enlarged view of point A.

[0049] Specifically, see Figures 1 to 3 The can body 10 of the packaging container includes: a can body 100; a can mouth 200, the can mouth 200 includes: a first connecting portion 210, the first connecting portion 210 is connected to the can body 100; a second connecting portion 220, the second connecting portion 220 is connected to the end of the first connecting portion 210 away from the can body 100, and the second connecting portion 220 is used to connect to the can cover 20 of the packaging container; a first curling portion 230 and a sealing portion 240, the first curling portion 230 connects the second connecting portion 220 and the sealing portion 240, and the first curling portion 230 is oriented toward the central axis of the can body 100 (for example Figure 1 、 Figure 2 and Figure 6 The sealing portion 240 is curled along the radial direction of the can body 100 (eg Figure 1 、 Figure 2 and Figure 6The Z direction in the radial direction) extends toward the central axis O, and the radial direction Z is perpendicular to the central axis O; the can body 100, the first connecting portion 210, the second connecting portion 220, the first curled portion 230 and the sealing portion 240 together form a accommodating cavity 300 for accommodating materials, the sealing portion 240 forms a can opening 400 connected to the accommodating cavity 300, and the sealing portion 240 is used to abut against the can cover 20 so that the can cover 20 seals the can opening 400; the second curled portion 250, the second curled portion 250 is connected to the end of the sealing portion 240 away from the first curled portion 230, and the second curled portion 250 is curled toward the can body 100.

[0050] The packaging container 10 provided in the embodiment of the present application is provided with a can body 100. The can body 100, as the main body of the can body 10, provides a basic storage space, provides a stable storage environment for materials, and protects the materials from external influences. The provision of the can body 100 allows the packaging container to be placed independently, facilitating storage and transportation.

[0051] The second connecting portion 220 is provided to connect to the can lid 20 of the packaging container, thereby achieving a connection between the can spout 200 and the can lid 20. This embodiment does not limit the specific connection method between the second connecting portion 220 and the can lid 20, and can be adjusted according to specific needs. In some examples, the second connecting portion 220 has external threads, and the can lid 20 has internal threads, and the external threads and the internal threads mate to achieve a secure connection between the can spout 200 and the can lid 20. In other examples, the can lid 20 and the second connecting portion 220 are snap-fitted.

[0052] By providing the first curling portion 230 and the sealing portion 240 , the sealing portion 240 is connected to the second connecting portion 220 via the first curling portion 230 , so that the second connecting portion 220 can stably support the sealing portion 240 .

[0053] The can body 100, the first connecting portion 210, the second connecting portion 220, the first curled portion 230, and the sealing portion 240 collectively define a accommodating cavity 300, which can be used to accommodate materials. The sealing portion 240 extends along a radial direction Z of the can body 100 toward the central axis O of the can body 100, with the radial direction Z being perpendicular to the central axis O. The sealing portion 240 defines a can opening 400 that communicates with the accommodating cavity 300, allowing materials to be loaded into or removed from the accommodating cavity 300.

[0054] The sealing portion 240 is configured to abut the can lid 20. The sealing portion 240 extends along the radial direction Z toward the central axis O of the can body 100, forming an additional contact surface on the surface of the sealing portion 240 facing away from the can body 100. When the can lid 20 is installed, the can lid 20 contacts not only the second connecting portion 220 but also the contact surface on the sealing portion 240. This increases the contact area between the can lid 20 and the can spout 200, thereby enhancing the sealing effect therebetween and effectively preventing the material in the accommodating cavity 300 from flowing out of the can opening 400. Furthermore, by arranging the sealing portion 240 to extend along the radial direction Z toward the central axis O of the can body 100, the sealing portion 240 can be provided without changing the size of the can spout 200, resulting in a relatively small volume for both the can spout 200 and the can lid 20.

[0055] In addition, by setting a first curled portion 230 and a second curled portion 250, the first curled portion 230 is connected between the second connecting portion 220 and the sealing portion 240, and the second curled portion 250 is connected to the end of the sealing portion 240 away from the second connecting portion 220. The first curled portion 230 is curled toward the central axis O of the can body 100, and the second curled portion 250 is curled toward the can body 100, so that the outer edge (first curled portion 230) and the inner edge (second curled portion 250) of the mouth of the can 200 are both smooth structures, which can avoid the edge of the mouth of the can 200 being too sharp and causing cuts.

[0056] It should be noted that the can body 100 and the can cover 20 are structurally designed in a manner known in the art and will not be described in detail herein.

[0057] The following describes the preferred technical solution of the can body 10 of the packaging container of the embodiment of the present application with reference to the accompanying drawings. Figure 4 Schematic diagram of the formation process of the local structure of the mouth 200 Figure 1 , Figure 5 Schematic diagram of the formation process of the local structure of the mouth 200 Figure 2 , Figure 6 It is a schematic diagram of the structure of the local structure of the can mouth 200 after molding.

[0058] In some embodiments, see Figure 3 The sealing portion 240 has a contact surface 241 facing away from the can body 100 , and the contact surface 241 is used to contact the can cover 20 .

[0059] The abutment surface 241 is an additional contact surface when the tank cover 20 contacts the tank spout 200. When the tank cover 20 is installed, the tank cover 20 not only contacts the second connecting portion 220, but also contacts the abutment surface 241, so that the contact area between the tank cover 20 and the tank spout 200 is increased, thereby improving the sealing effect between the two, and can effectively prevent the material in the accommodating cavity 300 from flowing out of the tank mouth 400.

[0060] In some specific implementations, see Figure 3 , the abutting surface 241 is a plane.

[0061] The degree of matching between the two planes is high. Since the surface of the can lid 20 that seals the can mouth 400 is generally flat, this embodiment sets the contact surface to a plane that matches the surface of the can lid 20 that seals the can mouth 400, which can improve the sealing effect between the can lid 20 and the can mouth 200. In addition, flat surfaces are easy to manufacture. Setting the abutting surface 241 to a flat surface reduces the manufacturing difficulty and cost of the sealing portion 240.

[0062] In some other specific embodiments (not shown in the drawings of this embodiment), the abutting surface 241 is a serrated surface or a wavy surface.

[0063] Under the premise of equal length and width, the surface area of ​​the serrated or wavy surface is greater than the surface area of ​​the plane. In this embodiment, by setting the abutting surface 241 as a serrated surface or a wavy surface that matches the surface of the tank cover 20 closing the tank mouth 400, the contact area between the tank body 10 and the tank cover 20 can be further increased, thereby improving the sealing effect between the two.

[0064] In other embodiments, see Figures 1 to 3 as well as Figure 6 The sealing portion 240 is annular, and the width of the sealing portion 240 (eg Figure 6 The width W of the sealing portion 240 is 0.5 mm to 2 mm. Exemplarily, the width W of the sealing portion 240 is 0.5 mm, 1 mm or 2 mm.

[0065] Based on the consideration of sealing performance and ease of use, the width W of the sealing portion 240 can be set to 0.5mm to 2mm. Specifically, the larger the width W of the sealing portion 240, the better the sealing effect between the can lid 20 and the can mouth 200; and the smaller the diameter of the can mouth 400 (e.g. Figure 6 The larger the D1 (i.e., the inner diameter of the sealing portion 240) shown, the more convenient it is for loading and unloading materials into and out of the accommodating cavity 300. However, when the overall size of the can mouth 200 remains unchanged, the width W of the sealing portion 240 is inversely proportional to the diameter D1 of the can mouth 400. By rationally setting the width W of the sealing portion 240 in this embodiment, both the ease of use of the can body 10 and the sealing performance between the can body 10 and the can lid 20 can be taken into consideration.

[0066] In some other embodiments, see Figure 6 The inner diameter of the sealing portion 240 (ie, the diameter D1 of the tank mouth 400) is 20 mm to 50 mm, for example, 20 mm, 35 mm or 50 mm; the diameter D2 of the tank mouth 200 is 28 mm to 58 mm, for example, 28 mm, 43 mm or 58 mm.

[0067] The smaller diameter D1 of the tank opening 400 is suitable for holding liquid materials, while the larger diameter D1 of the tank opening 400 is suitable for holding solid materials or viscous materials. Therefore, based on production difficulty, practicality and cost considerations, the diameter D1 of the tank opening 400 can be set to 20 mm to 50 mm.

[0068] In addition, in this embodiment, the diameter D2 of the nozzle 200 is set to 28mm to 58mm, which can not only avoid the situation where the material is difficult to take out due to the diameter D2 being too small, but also prevent the problem that the material is easy to overflow due to the diameter being too large.

[0069] In some embodiments, see Figure 6 , the thickness of the sealing portion 240 (eg Figure 6 The thickness H shown is 0.5 mm to 2 mm. Exemplarily, the thickness H of the sealing portion 240 is 0.5 mm, 1 mm or 2 mm.

[0070] Based on the considerations of production cost, production difficulty and structural strength, the thickness H of the sealing portion 240 can be set to 0.5 mm-2 mm. Within this range, the production cost and production difficulty of the sealing portion 240 are low, and the structural strength of the sealing portion 240 is high.

[0071] In other embodiments, the surface roughness of the abutting surface 241 of the sealing portion 240 is 0.1 μm to 0.8 μm, for example, 0.1 μm, 0.4 μm, or 0.8 μm.

[0072] The surface roughness of the abutment surface 241 directly affects the sealing effect between the sealing portion 240 and the can lid 20. The higher the surface roughness of the abutment surface 241, the worse the sealing performance of the sealing portion 240. Therefore, in this embodiment, the surface roughness of the abutment surface 241 is set to no higher than 0.8 μm, which improves the sealing performance of the sealing portion 240. Furthermore, the lower the surface roughness of the abutment surface 241, the more difficult it is to produce the sealing portion 240. Therefore, to balance sealing performance and production difficulty, in this embodiment, the surface roughness of the abutment surface 241 is set to 0.1 μm to 0.8 μm.

[0073] In some embodiments, see Figure 3 and Figure 6 The can mouth 200 further includes a third curled portion 260 , which is connected to one end of the second curled portion 250 away from the sealing portion 240 , and at least one of the second connecting portion 220 and the sealing portion 240 abuts against the third curled portion 260 .

[0074] When at least one of the second connecting portion 220 and the sealing portion 240 abuts the third curled portion 260, a sealed space is formed between them. This effectively prevents material from accumulating in gaps within the can body 10. If material accumulates in these gaps, it not only affects the cleanliness of the packaging container but can also lead to bacterial growth, affecting the quality of the material. By preventing material accumulation, the sanitation of the packaging container is improved.

[0075] In addition, the second connecting portion 220 abuts against the third curled portion 260, which can improve the structural strength of the sealing portion 240 and the third curled portion 260. Specifically, the second connecting portion 220 abuts against the third curled portion 260, and the second connecting portion 220 provides additional support for the sealing portion 240 and the third curled portion 260, which can improve the deformation resistance of the sealing portion 240 and the third curled portion 260.

[0076] In other embodiments, the curvature radius of the second curled portion 250 is greater than the curvature radius of the third curled portion 260 .

[0077] The larger radius of curvature of the second curled portion 250 means it forms a wider arc-shaped structure, which is not only convenient for loading and unloading materials but also less likely to cause cuts. The smaller radius of curvature of the third curled portion 260 forms a tighter annular structure, which has higher structural strength. When at least one of the second connecting portion 220 and the sealing portion 240 abuts the third curled portion 260, a frame-like structure is formed between the second connecting portion 220 and the sealing portion 240, thereby enhancing the overall strength and deformation resistance of the can mouth 200.

[0078] In addition, the curvature radius of the second curled portion 250 gradually decreases, and the curvature radius of the third curled portion 260 gradually decreases. The curvature radius of the second curled portion 250 is greater than the curvature radius of the third curled portion 260, which allows the remaining material used to manufacture the mouth of the can 200 to be curled into the accommodating cavity 300, and the space occupied in the accommodating cavity 300 is smaller, so that more material can be accommodated in the accommodating cavity 300.

[0079] In some other embodiments, the first curled portion 230 , the sealing portion 240 , the second curled portion 250 , and the third curled portion 260 are an integrally formed rolled member.

[0080] The first curled portion 230, the sealing portion 240, the second curled portion 250, and the third curled portion 260 are integrally formed, thereby enhancing the structural strength of the can mouth 200. Specifically, since there are no joints or welds between the various parts of the can mouth 200, the overall structure is more continuous and stable, thereby enhancing the pressure resistance and impact resistance of the can body 10.

[0081] In addition, the first curled portion 230, the sealing portion 240, the second curled portion 250 and the third curled portion 260 are integrally formed, and the sealing portion 240 is seamlessly connected to other parts of the can mouth 200, which can better cooperate with the can cover 20 to form a tighter abutment surface 241.

[0082] Furthermore, the first curled portion 230 , the sealing portion 240 , the second curled portion 250 and the third curled portion 260 of the can mouth 200 are formed by a curling process.

[0083] When manufacturing the can body 10 of a metal packaging container, iron sheets are first cast into a cylindrical blank, which is then reduced in diameter to form the can body 100 and the semi-finished can mouth 200. Figures 4 to 6 Finally, the mold 30 is used to process the iron sheet of the semi-finished can mouth 200 through a curling process to form a first curled portion 230, a sealing portion 240, a second curled portion 250, and a third curled portion 260 on the semi-finished can mouth 200. This curling process can accurately control the geometric shapes of the first curled portion 230, the sealing portion 240, the second curled portion 250, and the third curled portion 260.

[0084] It should be understood that the embodiments of the present application are not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A can body of a packaging container, characterized in that: include: Can body (100); A can mouth (200), the can mouth (200) comprising: a first connecting portion (210), the first connecting portion (210) being connected to the can body (100); a second connecting portion (220), the second connecting portion (220) being connected to an end of the first connecting portion (210) facing away from the can body (100), the second connecting portion (220) being used to connect to a can lid (20) of a packaging container; a first curling portion (230) and a sealing portion (240), wherein the first curling portion (230) connects the second connecting portion (220) and the sealing portion (240), the first curling portion (230) curls toward the central axis of the can body (100), and the sealing portion (240) extends along a radial direction of the can body (100) toward the central axis, wherein the radial direction is perpendicular to the central axis, and the sealing portion (240) is used to abut against the can cover (20); A second curling portion (250), wherein the second curling portion (250) is connected to an end of the sealing portion (240) that is away from the first curling portion (230), and the second curling portion (250) is curled toward the can body (100).

2. The can body of the packaging container according to claim 1, characterized in that: The sealing portion (240) has an abutting surface (241) facing away from the can body (100), and the abutting surface (241) is used to abut against the can cover (20). The abutting surface (241) is a plane, a serrated surface, or a wavy surface.

3. The can body of the packaging container according to claim 1, characterized in that: The sealing portion (240) is annular, and the width of the sealing portion (240) is 0.5 mm to 2 mm.

4. The can body of the packaging container according to claim 3, characterized in that: The inner diameter of the sealing portion (240) is 20 mm to 50 mm; the diameter of the can mouth (200) is 28 mm to 58 mm.

5. The can body of the packaging container according to claim 1, characterized in that: The thickness of the sealing portion (240) is 0.5 mm to 2 mm.

6. The can body of the packaging container according to claim 1, characterized in that: The sealing portion (240) has a contact surface (241) facing away from the can body (100), the contact surface (241) is used to contact the can cover (20), and the surface roughness of the contact surface (241) is 0.1 μm to 0.8 μm.

7. The can body of the packaging container according to any one of claims 1 to 6, characterized in that: The can mouth (200) further includes a third curled portion (260), which is connected to an end of the second curled portion (250) facing away from the sealing portion (240), and at least one of the second connecting portion (220) and the sealing portion (240) abuts against the third curled portion (260).

8. The can body of the packaging container according to claim 7, characterized in that: The curvature radius of the second curled portion (250) is greater than the curvature radius of the third curled portion (260).

9. The can body of the packaging container according to claim 7, characterized in that: The first curled portion (230), the sealing portion (240), the second curled portion (250) and the third curled portion (260) are integrally formed.

10. A packaging container, characterized in that: The invention comprises a can body (10) according to any one of claims 1 to 9 and a can cover (20) connected to the can body (10).

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