Food can

Abstract

The embodiment of the present application provides a food can, and relates to the technical field of food packaging. The food can comprises a can body, the can body comprises a waist structure, the waist structure has a narrow waist line, the narrow waist line divides the can body into a first can body and a second can body, the first can body is formed with a can opening, the second can body is formed with a can bottom, and the first can body and the second can body jointly form a storage cavity with an opening; the outer wall of the first can body is provided with a plurality of grooves which are arranged at intervals in the circumferential direction, the grooves are arranged on the side of the first can body close to the second can body; the cross-sectional area of the second can body increases in the direction from the first can body to the second can body; and the can body is integrally formed. The food can of the embodiment of the present application is convenient for a user to hold and improves the holding comfort of the user.

Description

Technical Field

[0001] This application relates to the field of food packaging technology, and more particularly to a food can. Background Technology

[0002] Metal packaging containers are widely used in the food, beverage, and chemical industries, among which the tinplate three-piece can is one of the important forms of metal packaging. The three-piece can consists of a body, a top lid, and a bottom lid, and features high strength, good sealing, and a long shelf life, making it suitable for packaging foods such as milk powder and dried goods that require long-term preservation.

[0003] In related technologies, three-piece cans typically employ a cylindrical can body with annular raised ribs pressed onto the surface. These ribs enhance the overall rigidity of the can body through structural support, thereby increasing its strength. However, cylindrical can bodies offer poor grip. Utility Model Content

[0004] This application provides a food can that improves the stability of the user's grip on the food can.

[0005] The food can provided in this application includes a can body, the can body including a waist-cinching structure, the waist-cinching structure having a narrow waistline, the narrow waistline dividing the can body into a first can body and a second can body, the first can body forming a can mouth, the second can body forming a can bottom, the first can body and the second can body together forming an open storage cavity;

[0006] The outer wall of the first tank has a plurality of grooves spaced apart around its circumference, the grooves being located on the side of the first tank closer to the second tank; the cross-sectional area of ​​the second tank increases along the direction from the first tank to the second tank;

[0007] The tank body is integrally formed.

[0008] In some embodiments, the groove is formed by recessing the outer wall of the first tank body. The groove has a bottom wall and a side wall, and the side wall is connected to the bottom wall and the outer surface of the first tank body.

[0009] The sidewall includes a first segment and a second segment connected together, and the distance between the first segment and the second segment increases along the direction from the first tank to the second tank.

[0010] In some embodiments, the sidewall and the bottom wall are set at an obtuse angle.

[0011] In some embodiments, the bottom wall and the side wall have a smooth transition; and / or, the side wall has a smooth transition with the outer surface.

[0012] In some embodiments, the connection between the first segment and the second segment is smoothly transitioned.

[0013] In some embodiments, in two adjacent grooves, the first segment of one groove is connected to the second segment of the other groove.

[0014] In some embodiments, the connection between the first segment and the second segment is a smooth transition.

[0015] In some embodiments, the food can is provided with two grooves, namely a first groove and a second groove, wherein a first segment of the first groove is connected to a second segment of the second groove, and a second segment of the first groove is connected to a first segment of the second groove.

[0016] In some embodiments, the bottom wall is connected to the outer peripheral wall of the second tank, and the bottom wall and the side wall of the second tank have a smooth transition.

[0017] In some embodiments, the food can further includes a lid mounted on the side of the first food can away from the second food can, for covering the opening of the can.

[0018] The food can provided in this application features a waist-cinching structure on its body, forming a first can and a second can on either side of the narrowed waistline. Multiple grooves are provided on the side of the first can closer to the second can. The waist-cinching structure and the grooves together enhance the structural strength of the can, thus replacing the deformation-resistant function of ribs. Furthermore, the grooves in the first can increase the contact area with the hand and provide anti-slip properties, while the cross-sectional area of ​​the second can gradually increases from top to bottom. Combined with the waist-cinching structure, this improves grip stability and grip comfort. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0020] Figure 1 This is a schematic diagram of the structure of a food can provided in an embodiment of this application;

[0021] Figure 2 for Figure 1 A front view of a food can;

[0022] Figure 3 A schematic diagram of the grooved sidewall of a food can provided in an embodiment of this application;

[0023] Figure 4 for Figure 1 Side view of a food can;

[0024] Figure 5 This is a schematic diagram of the groove distribution of a food can provided in an embodiment of this application.

[0025] Figure label:

[0026] 100 - Tank body; 101 - Narrow waistline; 110 - First tank body; 111 - Tank opening; 120 - Second tank body; 121 - Tank bottom;

[0027] 112 - Groove; 112a - First groove; 112b - Second groove; 113 - Bottom wall; 114 - Side wall; 114a - First section; 114b - Second section; 115 - Outer surface.

[0028] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0030] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0031] In this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0032] Currently, tinplate three-piece cans generally use a pre-printing process, where brand logos, product information, and decorative patterns are printed on the surface of the tinplate sheet before the can is formed. The can is then rolled and welded into a cylindrical shape. However, the rolling process requires mechanical pressing of the middle section of the formed can. During this pressing process, the printed layers on the can surface are stretched, wrinkled, or partially blurred due to the deformation of the metal substrate, leading to problems such as continuity breaks and color shifts in the printed pattern.

[0033] Meanwhile, in the three-piece can production process, the ribbing process requires a separate special processing step after the can body is formed, which not only extends the production cycle, but also requires additional investment in ribbing equipment, operators and energy costs.

[0034] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0035] This application provides a food can that can be used for packaging food, milk powder, dried goods, and other products.

[0036] Please see Figures 1 to 5 The food can includes a can body 100, which includes a waist-reducing structure with a narrowing waistline 101. The waist-reducing structure can be an annular, tapering structure extending continuously along the circumference of the can body 100, and can be located in the lower part of the can body 100. The narrowing waistline 101 can be an outer circumference line of the waist-reducing structure of the can body 100, and its radial dimension is smaller than the radial dimension of other areas of the can body 100.

[0037] Please see Figure 1 The narrowing waistline 101 divides the can 100 into a first can 110 and a second can 120. The first can 110 is located above the narrowing waistline 101, and its top has a can opening 111 for taking out or putting in food. The second can 120 is located below the narrowing waistline 101, and its bottom has a closed can bottom 121. The bottom of the first can 110 can be smoothly connected to the upper end of the narrowing waistline 101, and the top of the second can 120 can be smoothly connected to the lower end of the narrowing waistline 101. The first can 110 and the second can 120 together form an open storage cavity.

[0038] The outer wall of the first can 110 has a plurality of grooves 112 spaced around its circumference. These grooves 112 are located on the side of the first can 110 near the second can 120, that is, near the area of ​​the narrowed waistline 101. When a user grips the can 100, the palm can be located in the area of ​​the narrowed structure, and the fingers can naturally contact the grooves 112. The groove walls of the grooves 112 can limit the fingers, effectively preventing the hand from slipping due to sweat or the smooth surface of the can 100.

[0039] Meanwhile, due to the presence of the groove 112, the outer wall of the first tank 110 forms an alternating concave and convex structure. This structure can replace the reinforcement effect achieved by the traditional rolling process. That is, the circumferentially distributed groove 112 is equivalent to forming multiple circumferential reinforcing ribs on the first tank 110. By changing the local stress distribution of the tank 100, the deformation resistance of the first tank 110 is improved.

[0040] The groove 112 can be formed by pressing with a mold during the integral molding process of the can body 100, so that there is no need to add an extra rolling process, and it will not cause stretching or wrinkling of the printed pattern on the surface of the can body 100.

[0041] For example, the vertical distance between the top end of the groove 112 and the narrowing waistline 101 is 1-3 cm, and the vertical distance between the bottom end of the groove 112 and the narrowing waistline 101 is 0.5-1 cm, so that the groove 112 is positioned where the user's hand naturally fits when gripping the can 100. The number of grooves 112 can be set to 2-4 according to the diameter of the first can 110, and the arc length between adjacent grooves 112 is equal to ensure that the can 100 is subjected to uniform force in the circumference; the shape of the groove 112 is arc-shaped or U-shaped.

[0042] Additionally, please see Figure 2 In this embodiment, the cross-sectional area of ​​the second tank 120 of the tank 100 increases in the direction from the first tank 110 to the second tank 120. The cross-sectional shape of the second tank 120 can be circular, and its cross-sectional diameter gradually increases from the part near the narrow waistline 101 to the bottom 121.

[0043] In other words, the cross-sectional area of ​​the second can 120 gradually decreases from bottom to top, causing the center of gravity of the can 100 to shift downward. When the can 100 is filled with food, the weight is concentrated in the area near the bottom 121. At this time, when the can 100 is placed on a flat surface, the larger cross-sectional area of ​​the bottom 121 can provide more stable support.

[0044] When a user grips the groove 112 area of ​​the first can 110, the palm of the hand can fit against the arc-shaped outer wall of the second can 120. Since the outer wall of the second can 120 tends to narrow upwards, its arc-shaped surface fits the web of the hand and the palm more closely. The hand does not need to be constantly tense to obtain upward support through the outer wall of the second can 120, effectively dispersing the force on the hand muscles. Especially for the can 100 with a larger capacity and heavier weight, the soreness and fatigue during long-term gripping are significantly reduced.

[0045] In other words, the narrow waistline 101, the groove 112 and the second tank body 120 are formed by synchronous pressing in the cavity of the same mold. The transition areas between each feature can all be smooth arcs, which avoids the structural misalignment and sharp corners that may occur in traditional multi-process processing. This helps to ensure the integrity of the appearance of the tank body 100 and avoid structural weakness caused by local stress concentration.

[0046] Meanwhile, in this embodiment, the tank 100 is formed by an integral molding process. For example, the tank 100 can be manufactured in an integral manner by a continuous stamping and stretching equipment at the workstation, thereby eliminating the need for separate equipment for rib rolling and reducing production costs.

[0047] Therefore, the food can provided in this embodiment, by providing a waist-cinching structure on the can body 100, and forming a first can body 110 and a second can body 120 on both sides of the narrowed waistline 101 of the waist-cinching structure, and by providing multiple grooves 112 on the side of the first can body 110 near the second can body 120, the waist-cinching structure and the grooves 112 can jointly improve the structural strength of the can body 100, thereby replacing the deformation resistance function of the ribs. Furthermore, the grooves 112 of the first can body 110 increase the contact area with the hand and prevent slippage, while the cross-sectional area of ​​the second can body 120 gradually increases from top to bottom. Combined with the waist-cinching structure, this helps to improve grip stability and grip comfort.

[0048] In some embodiments, please refer to Figures 1 to 5 The outer wall of the first tank 110 is recessed to form a groove 112. The groove 112 has a bottom wall 113 and a side wall 114. The bottom wall 113 is the inner side wall 114 formed by the groove 112 recessed radially along the first tank 110. The bottom wall 113 is also an arc-shaped surface extending circumferentially along the first tank 110.

[0049] The sidewall 114 is a transition wall connecting the bottom wall 113 and the reference outer surface 115 of the first tank body 110. The sidewall 114 of each groove 112 is divided into two segments along its own circumferential length direction, namely the first segment 114a and the second segment 114b located at the two ends of the circumference of the groove 112. One end of the two sidewall segments 114 is integrally connected to the two ends of the circumferential direction of the bottom wall 113, and the other end extends towards the outer surface 115 of the first tank body 110 to form a complete groove 112 outline.

[0050] Along the direction from the first tank body 110 to the second tank body 120, that is, along the axial direction of the tank body 100 from the tank opening 111 to the tank bottom 121, the distance between the first segment 114a and the second segment 114b increases, so that the groove 112 forms a downward opening in the axial direction of the tank body 100 through the first segment 114a and the second segment 114b of the side wall 114, and the side wall 114 as a whole forms a gradual trend of opening outward along the axial direction.

[0051] Thus, when a user grips the can 100, the user's fingers can contact the groove 112 along the axial direction of the can 100 and touch the first segment 114a and the second segment 114b, which helps to increase the contact area in different directions and improves the stability of the user gripping the can 100.

[0052] In some embodiments, please refer to Figure 4 The side wall 114 and the bottom wall 113 are set at an obtuse angle.

[0053] The obtuse angle setting can firstly avoid stress concentration at the connection between the side wall 114 and the bottom wall 113. Compared with right angle or acute angle connection, the obtuse angle can make the groove 112 evenly distribute the force along the transition area between the side wall 114 and the bottom wall 113 to the overall outer wall of the first can 110 when it is subjected to external pressure or the weight of the food inside. This reduces the dents or cracks caused by local overload and further strengthens the structural reinforcement effect of the groove 112 on the first can 110. Combined with the previously circumferentially distributed groove 112 layout, even without the rolling process, the first can 110 can be guaranteed to resist deformation when transported by bumps or gripping.

[0054] Meanwhile, the obtuse angle design makes the internal space of the groove 112 form an arc transition that fits the contour of the finger more closely. When the user's finger is inserted into the groove 112, the fingertip and finger pad can naturally fit the connection between the bottom wall 113 and the side wall 114, avoiding the pain caused by right angles or sharp angles, while increasing the contact area between the hand and the groove 112 and improving the stability when gripping.

[0055] In some embodiments, please refer to Figure 2 and Figure 4 The bottom wall 113 and the side wall 114 are smoothly transitioned; the side wall 114 is smoothly transitioned to its upper outer surface 115.

[0056] The smooth transition area can be made of arc surface. The arc surface can evenly distribute the stress concentrated at the connection point along the arc trajectory to the bottom wall 113 and the side wall 114, as well as the entire area from the side wall 114 to the outer surface 115 of the first tank body 110, so as to avoid the deformation of the groove 112 or the depression of the tank body 100 due to the local stress exceeding the fatigue limit of the tinplate substrate.

[0057] Furthermore, the curved surface can reduce localized friction between the production mold and the tinplate substrate during the demolding process.

[0058] In some embodiments, please refer to Figure 2 The smooth transition between the first segment 114a and the second segment 114b allows the first tank body 110 to form wavy or S-shaped patterns through the sidewall 114 of the groove 112.

[0059] Specifically, the first segment 114a is an extension of the side wall 114 of the groove 112 near the circumferential side of the tank body 100, and the second segment 114b is an extension near the other circumferential side. The two segments meet in the middle area of ​​the groove 112. The side wall 114 at the meeting point is connected by an arc surface, so that the outline of the side wall 114 of the first segment 114a naturally transitions to the outline of the side wall 114 of the second segment 114b along the arc surface, forming a continuous arc-shaped connection structure without sharp edges.

[0060] The arc-shaped transition between the first section 114a and the second section 114b can disperse the local force along the arc surface to the entire sidewall 114 area of ​​the first section 114a and the second section 114b, making the stress distribution more uniform. Combined with the obtuse angle setting between the sidewall 114 and the bottom wall 113, the reinforcement effect of the groove 112 on the first tank body 110 is further enhanced, ensuring that even without the rolling process, the groove 112 area can still provide stable anti-deformation support for the first tank body 110, avoiding the structural weakness caused by stress concentration at the joint of the ribs in traditional rolled tanks.

[0061] In some embodiments, please refer to Figure 4 and Figure 5 In two adjacent grooves 112, the first segment 114a of one groove 112 is connected to the second segment 114b of the other groove 112. That is, the adjacent grooves 112 are directly connected by their end segments, so that multiple grooves 112 form a continuous concave-convex structure in the circumferential region of the first tank body 110 near the narrow waistline 101.

[0062] Since adjacent grooves 112 are continuously connected by segmented sidewalls 114, the pattern pre-printed on the tinplate can be simultaneously covered to all areas of the grooves 112 by the integral molding process, that is, it can include the first segment 114a, the second segment 114b and the connection. The pattern is continuously distributed in the circumferential direction, without pattern breakage or local stretching caused by the gaps in the grooves 112. Combined with the obtuse angle setting and smooth transition structure of the sidewalls 114 and the bottom wall 113, it ensures that the printed pattern on the outer wall of the entire first can 110 maintains a complete and clear visual effect.

[0063] In some embodiments, please continue reading Figure 4 The first tank body 110 is provided with two grooves 112, namely the first groove 112a and the second groove 112b. The first segment 114a of the first groove 112a is connected to the second segment 114b of the second groove 112b, and the second segment 114b of the first groove 112a is connected to the first segment 114a of the second groove 112b.

[0064] In other words, the first groove 112a and the second groove 112b are arranged opposite each other on the circumferential sides of the first tank body 110. The two symmetrically distributed grooves 112 are connected by their respective first segments 114a and second segments 114b to form a closed loop structure, which can uniformly decompose the radial force into two symmetrical force paths along the circumference, thereby further avoiding the occurrence of depressions or deformations in local areas due to force concentration.

[0065] Furthermore, since only two connecting grooves 112a and 112b need to be processed, the mold cavity can be designed as a symmetrical double-arc surface structure, eliminating the need for complex multi-segment continuous cavities, thus reducing the difficulty of mold processing and manufacturing costs. During the stamping process, the tinplate substrate only needs to be stretched once to complete the forming and cross-connection of the two grooves 112.

[0066] In some embodiments, please refer to Figure 4 The bottom wall 113 is connected to the outer peripheral wall of the second tank 120, and the bottom wall 113 and the side wall 114 of the second tank 120 are smoothly connected.

[0067] The bottom wall 113 can be the inner wall 114 formed by the radial recess of the groove 112 along the first tank 110. One end of the groove 113 away from the outer surface 115 of the first tank 110 is connected to the outer peripheral wall of the second tank 120. The transition area can be connected by an arc-shaped surface so that there are no sharp corners or steps between the bottom wall 113 of the groove 112 and the outer peripheral wall of the second tank 120, forming a continuous and smooth curved surface structure.

[0068] The cross-sectional area of ​​the second tank 120 gradually increases along the direction from the first tank 110 to the bottom 121. Its outer peripheral wall itself has a certain anti-tipping support function. The direct connection between the bottom wall 113 of the groove 112 and the outer peripheral wall of the second tank 120 is equivalent to forming a support path between the groove 112 structure of the first tank 110 and the flared structure of the second tank 120.

[0069] When the tank 100 is subjected to vertical pressure, the pressure can be transmitted to the bottom wall 113 through the groove 112 of the first tank 110, and then evenly distributed to the outer peripheral wall of the second tank 120 through the smoothly transitioned arc surface, and finally transmitted to the bottom 121 of the tank and acted on the placement plane, so as to avoid local deformation caused by pressure concentration at the junction of the first tank 110 and the second tank 120.

[0070] In some embodiments, the food can also include a lid, not shown in the figure, which is mounted on the opening 111 of the first can 110 to form a closed structure for the storage cavity.

[0071] To enhance the sealing performance of the storage cavity, a sealing rib extending continuously along its circumference is provided at the can opening 111. This sealing rib is an annular protrusion integrally formed on the inner or outer wall of the can opening 111, with a semi-circular or trapezoidal cross-section. When the lid is installed on the can opening 111, the contact surface between the lid and the can opening 111 will be in close contact with the sealing rib, thereby improving the sealing performance of the food can.

[0072] Additionally, anti-slip textures or raised handles can be added to the top of the lid to further enhance grip when opening.

[0073] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0074] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A food can, characterized in that, Includes a tank body (100), the tank body (100) includes a waist-cinching structure, the waist-cinching structure has a narrow waistline (101), the narrow waistline (101) divides the tank body (100) into a first tank body (110) and a second tank body (120), the first tank body (110) forms a tank opening (111), the second tank body (120) forms a tank bottom (121), the first tank body (110) and the second tank body (120) together form an open storage cavity; The outer wall of the first tank (110) has a plurality of grooves (112) spaced around its circumference, the grooves (112) being located on the side of the first tank (110) near the second tank (120); the cross-sectional area of ​​the second tank (120) increases along the direction from the first tank (110) to the second tank (120); The tank body (100) is integrally formed.

2. The food can according to claim 1, characterized in that, The groove (112) is formed by the inward recess of the outer wall of the first tank (110). The groove (112) has a bottom wall (113) and a side wall (114). The side wall (114) is connected to the bottom wall (113) and the outer surface (115) of the first tank (110). The sidewall (114) includes a first segment (114a) and a second segment (114b) connected together, and the distance between the first segment (114a) and the second segment (114b) increases along the direction from the first tank (110) to the second tank (120).

3. The food can according to claim 2, characterized in that, The sidewall (114) and the bottom wall (113) are set at an obtuse angle.

4. The food can according to claim 2, characterized in that, The bottom wall (113) and the side wall (114) are smoothly transitioned; and / or, the side wall (114) is smoothly transitioned to the outer surface (115).

5. The food can according to claim 2, characterized in that, The connection between the first segment (114a) and the second segment (114b) is smoothly transitioned.

6. The food can according to claim 2, characterized in that, In two adjacent grooves (112), the first segment (114a) of one groove (112) is connected to the second segment (114b) of the other groove (112).

7. The food can according to claim 2, characterized in that, The connection between the first segment (114a) and the second segment (114b) is smoothly transitioned.

8. The food can according to any one of claims 2 to 7, characterized in that, The food can is provided with two grooves (112), which are a first groove (112a) and a second groove (112b). The first segment (114a) of the first groove (112a) is connected to the second segment (114b) of the second groove (112b), and the second segment (114b) of the first groove (112a) is connected to the first segment (114a) of the second groove (112b).

9. The food can according to any one of claims 2 to 7, characterized in that, The bottom wall (113) is connected to the outer peripheral wall of the second tank (120), and the bottom wall (113) and the second tank (120) have a smooth transition.

10. The food can according to any one of claims 2 to 7, characterized in that, The food can also include a lid, which is installed on the side of the first food can away from the second food can to cover the mouth of the can (111).

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