Packaging cup

CN224899379UActive Publication Date: 2026-10-27INNER MONGOLIA MENGNIU DAIRY IND (GROUP) CO LTD +1
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Patent Information

Application Number
CN202522311167.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-31
Publication Date
2026-10-27
Estimated Expiration
2035-10-31

AI Technical Summary

Technical Problem

[0004]本实用新型提供一种包装杯,用以解决相关技术中在与多样化的灌装封合设备匹配时,封合不严而产生泄漏以及因封合过度导致开启困难的问题

Benefits of technology

[0015]本实用新型提供的包装杯,通过第一侧面的封合面和操作面之间具有夹角,且操作面低于封合面,使得当封合面在与封口膜热封等方式密封连接后,操作面与封口膜不存在连接,可提供用户分离封口膜和封合面的操作空间,方便用户撕揭;另外,基于封合面和操作面的角度设置,使得第一侧面呈弯折设置,也可以理解为具有弧度设置,从而例如热封时可以弥补一部分热封头不平整的缺陷,操作面对应热封头不平整的位置,而封合面则对应热封头平整的位置,能够弥补设备缺陷,实现与不同盖膜搭配的完美性,从而实现兼顾密封性能和易撕性。

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Abstract

The utility model relates to packing cup product technical field provides a kind of packing cup, including cup body and cup along, cup body has cup mouth;Cup along is circumferentially set along the cup mouth of cup body, and cup along has first side face;First side face at least includes sealing surface and operating surface, sealing surface is close to cup body inner wall, sealing surface is used to realize sealing connection with sealing film, and operating surface is located in the side away from cup body inner wall;Wherein, operating surface and sealing surface are arranged at angle, and along the thickness direction of cup along, operating surface is lower than sealing surface, to provide the operating space for making sealing surface and sealing film separate. It can make up equipment defect, realize the perfectness matched with different cover film, so as to realize the sealing performance and easy tearing. It can satisfy the sealing performance with sealing film on the basis of thinner cup along, so as to realize the saving of material;Compared with conventional flat cup along, it can reduce heat-sealing area, more easily open, also can satisfy with lower heat-sealing temperature to seal, so as to realize the saving of heat energy.
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Description

Technical Field

[0001] This utility model relates to the technical field of packaging cup products, and in particular to a packaging cup. Background Technology

[0002] Currently, most pre-made cup packaging on the market uses injection-molded PP plastic cups combined with heat-sealing film. This type of packaging not only needs to meet the product's sealing requirements but also needs to have good tearability to improve the consumer's user experience.

[0003] Taking the injection-molded round cups commonly used in the yogurt industry as an example, their rims generally adopt a flat design. This relatively simple and standardized structure often faces two challenges when used with diverse filling and sealing equipment: first, the risk of leakage due to inadequate sealing; and second, difficulty in tearing open due to over-sealing, affecting ease of opening. Utility Model Content

[0004] This utility model provides a packaging cup to solve the problems in related technologies, such as leakage due to incomplete sealing when matched with various filling and sealing equipment, and difficulty in opening due to over-sealing.

[0005] This utility model provides a packaging cup, comprising: The cup body has a rim; A rim is provided circumferentially along the mouth of the cup body, and the rim has a first side surface on its upper side in the thickness direction, the first side surface being connected to the inner wall of the cup body; The first side includes at least a sealing surface and an operating surface. Along the horizontal direction of the packaging cup, the sealing surface is close to the inner wall of the cup and is used to achieve a sealed connection with the sealing film. The operating surface is located on the side away from the inner wall of the cup. The operating surface is set at an angle to the sealing surface, and along the thickness direction of the cup rim, the operating surface is lower than the sealing surface to provide operating space for separating the sealing surface from the sealing film.

[0006] According to the present invention, a packaging cup is provided in which the sealing surface is horizontally arranged.

[0007] According to the present invention, the operating surface of a packaging cup is an inclined plane that slopes toward the bottom of the cup body.

[0008] According to the present invention, the included angle α between the sealing surface and the operating surface of a packaging cup is 5 to 20 degrees.

[0009] According to the present invention, the first side of the packaging cup further includes a transition surface, one end of which is connected to the inner wall of the cup body and the other end is connected to the sealing surface. The transition surface is set at an angle to the sealing surface, and the transition surface is lower than the sealing surface.

[0010] According to the present invention, a packaging cup is provided, wherein the transition surface is an inclined plane that slopes toward the bottom of the cup body.

[0011] According to the present invention, the included angle β between the sealing surface and the transition surface of a packaging cup is 5 to 20 degrees.

[0012] According to the present invention, a packaging cup has a second side surface along its thickness direction on its lower side, and the second side surface is connected to the outer wall of the cup body; The second side is provided corresponding to the first side along the thickness direction of the cup rim; The second side is either horizontally or curved.

[0013] According to the present invention, at least one of the following is a circular arc transition connection: one end of the first side surface is connected to the rim of the cup away from the cup body, and the other end of the first side surface is connected to the inner wall of the cup body.

[0014] According to the present invention, at least one of the two sides, namely, the connection between one end of the second side and the end face of the cup rim away from the cup body, and the connection between the other end of the second side and the outer wall of the cup body, is an arc transition connection.

[0015] The packaging cup provided by this utility model has an angle between the sealing surface and the operating surface on the first side, and the operating surface is lower than the sealing surface. This ensures that after the sealing surface is sealed with the sealing film by heat sealing or other methods, the operating surface is not connected to the sealing film. This provides the user with operating space to separate the sealing film and the sealing surface, making it convenient for the user to tear off. In addition, based on the angle setting of the sealing surface and the operating surface, the first side is bent, which can also be understood as having an arc setting. For example, during heat sealing, it can compensate for some of the unevenness of the heat sealing head. The operating surface corresponds to the uneven part of the heat sealing head, while the sealing surface corresponds to the flat part of the heat sealing head. This can compensate for equipment defects and achieve perfect compatibility with different cap films, thereby achieving a balance between sealing performance and easy tearing.

[0016] By adopting the above-mentioned cup rim structure, the sealing performance with the sealing film can be met on the basis of a thinner cup rim, thereby saving materials; compared with the conventional flat cup rim, the heat-sealing area can be reduced, making it easier to open, and it can also meet the requirement of using a lower heat-sealing temperature to seal, thereby saving heat energy. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the packaging cup provided by this utility model.

[0019] Figure 2 This is a cross-sectional schematic diagram of the packaging cup provided by this utility model.

[0020] Figure 3 yes Figure 2 An enlarged schematic diagram of the structure at point A in the middle.

[0021] Figure 4 This is a schematic diagram of the structure of a packaging cup, another example provided by this utility model.

[0022] Figure 5 This is a cross-sectional schematic diagram of the packaging cup provided by this utility model.

[0023] Figure 6 yes Figure 5 Enlarged schematic diagram of the structure at point B.

[0024] Figure label: 100. Cup body; 110. Cup mouth; 200. Cup rim; 210. First side surface; 211. Sealing surface; 212. Operating surface; 213. Transition surface; 220. Second side surface. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In related technologies, the injection-molded round cups widely used in the yogurt industry currently adopt a flat rim design with a thickness between 0.8-1.2mm. This relatively simple and standardized design often leads to two problems when matched with a variety of filling and sealing equipment: first, leakage due to inadequate sealing; and second, difficulty in opening due to over-sealing.

[0027] Specifically, leakage caused by inadequate sealing typically occurs in scenarios involving diverse filling and sealing equipment. When some equipment's heat-sealing heads or other sealing components have localized unevenness, the sealing effect at the corresponding position on the flat cup rim will be affected during the heat-sealing process, resulting in an incomplete seal and subsequent leakage.

[0028] The problem of difficulty in opening due to over-sealing is usually caused by the structural design of the flat rim of the cup. During the sealing process, the flat rim and the sealing film may be pressed too tightly due to excessive pressure. In addition, in processes such as heat sealing, the part of the sealing film that melts due to heat may directly contact the flat rim of the cup and flow down the vertical surface of the flat rim away from the cup body and solidify, further increasing the tightness of the seal, thus causing the user to feel difficulty or discomfort when tearing off the sealing film.

[0029] The following is combined Figures 1-6 The packaging cup of this utility model is described in this embodiment as a yogurt cup used in the yogurt industry. Of course, in other examples, the packaging cup can also be used in other industries, such as jelly packaging.

[0030] Reference Figure 1 and Figure 4 It is understood that the packaging cup includes a cup body 100 and a cup rim 200. The cup body 100 has a cup mouth 110. The cup rim 200 is circumferentially arranged along the cup mouth 110 of the cup body 100. The cup rim 200 has a first side surface 210 on its upper side in the thickness direction. The first side surface 210 is connected to the inner wall of the cup body 100. Reference Figure 2 , Figure 3 , Figure 5 and Figure 6 The first side 210 includes at least a sealing surface 211 and an operating surface 212. Along the horizontal direction of the packaging cup, the sealing surface 211 is close to the inner wall of the cup body 100 and is used to achieve a sealed connection with the sealing film. The operating surface 212 is located on the side away from the inner wall of the cup body 100. The operating surface 212 is set at an angle to the sealing surface 211, and along the thickness direction of the cup edge 200, the operating surface 212 is lower than the sealing surface 211 to provide operating space for separating the sealing surface 211 from the sealing film.

[0031] The packaging cup provided by this utility model has an angle between the sealing surface 211 and the operating surface 212 of the first side 210, and the operating surface 212 is lower than the sealing surface 211. This ensures that after the sealing surface 211 is sealed with the sealing film by heat sealing or other methods, the operating surface 212 is not connected to the sealing film. This provides the user with operating space to separate the sealing film and the sealing surface 211, making it convenient for the user to tear off. In addition, based on the angle setting of the sealing surface 211 and the operating surface 212, the first side 210 is bent, which can also be understood as having an arc setting. For example, during heat sealing, it can compensate for some of the unevenness of the heat sealing head. The operating surface 212 corresponds to the uneven position of the heat sealing head, while the sealing surface 211 corresponds to the flat position of the heat sealing head. This can compensate for equipment defects and achieve perfect compatibility with different cap films, thereby achieving a balance between sealing performance and easy tearing.

[0032] By adopting the above-mentioned cup rim 200 structure, the sealing performance with the sealing film can be met on the basis of a thinner cup rim 200, thereby saving materials; compared with the conventional flat cup rim 200, the heat-sealing area can be reduced, making it easier to open, and it can also meet the requirement of using a lower heat-sealing temperature to seal, thereby saving heat energy.

[0033] Therefore, with the above structure, the sealing surface 211 can focus on achieving a high-strength seal, effectively solving the problem of leakage due to poor sealing; while the independent operating surface 212 provides an easy starting point for applying force, ensuring that users can easily tear off the connection between the sealing film and the sealing surface 211.

[0034] Since the operating surface 212 is not connected to the sealing film, the molten fluid of the sealing film will not directly contact the operating surface 212. There is a certain time interval, which helps to prevent the molten fluid from flowing to the vertical end face of the cup rim 200 away from the cup body 100, thus solving the problem of opening difficulty caused by over-sealing. Through experimental comparison, it can be seen that compared with related technologies, the cup rim 200 of this application significantly improves the opening convenience and user experience while ensuring sealing and reliability.

[0035] Understandably, referring to Figure 3 and Figure 6 In some examples of this utility model, the sealing surface 211 is horizontally arranged, which facilitates the flat adhesion of the sealing film and ensures the uniformity and reliability of the seal; at the same time, it also provides convenience for the operation of tearing off the sealing film.

[0036] Of course, in other examples, the sealing surface 211 can also be set as an inwardly concave or outwardly convex arc surface. It is understood that the goal is to ensure that the operating surface 212 does not connect with the sealing film during the sealing process. Simultaneously, for example, the heat sealing head during heat sealing can be selected with an appropriate shape based on the setting of the sealing surface 211.

[0037] Understandably, referring to Figure 3 and Figure 6 In some examples of this utility model, the operating surface 212 is an inclined plane that slopes toward the bottom of the cup body 100.

[0038] When tearing off the seal, the inclined plane naturally guides the user's fingers or tools to apply downward force, making the tearing force more concentrated on the separation of the sealing surface 211, making the operation more effortless and smooth. At the same time, the inclined structure objectively increases the contact space between the fingers and the operating surface 212.

[0039] Of course, in other examples, the operating surface 212 is an arc-shaped surface that curves toward the bottom of the cup body 100.

[0040] By setting the operating surface 212 as an arc-shaped surface curving towards the bottom of the cup body 100, the arc-shaped surface can better conform to the natural curvature of the user's fingertips, providing a more comfortable and effortless point of force application, and naturally guiding the tearing direction. Secondly, the arc-shaped structure can effectively avoid stress concentration and improve the structural durability of this part.

[0041] Reference Figure 3 and Figure 6 In some embodiments of this utility model, the included angle α between the sealing surface 211 and the operating surface 212 is 5 to 20 degrees.

[0042] The aforementioned angle range balances ease of operation with structural strength. Specifically, it provides ample and comfortable operating space for fingers or tools, making tearing and peeling effortless and smooth, while ensuring structural stability at the connection between the sealing surface 211 and the operating surface 212. This prevents the strength from being weakened due to an excessively large angle or the operating space from being lost due to an excessively small angle, thereby optimizing the overall user experience and sealing reliability of the product.

[0043] Specifically, in the above embodiments, the sealing surface 211 is a horizontal plane and the operating surface 212 is an inclined plane. Therefore, the included angle α between the sealing surface 211 and the operating surface 212 can be 5 degrees, 10 degrees or 20 degrees.

[0044] Reference Figure 3 and Figure 6 In this embodiment, the angle between the sealing surface 211 and the operating surface 212 is 10 degrees. It should be noted that the value of this angle includes, but is not limited to, the values ​​mentioned above, and a reasonable error range is allowed.

[0045] It is understood that in some examples of this utility model, the first side surface 210 only includes a sealing surface 211 and an operating surface 212, and the sealing surface 211 is connected to the inner wall of the cup body 100.

[0046] Of course, refer to Figure 3 and Figure 6In some other examples of this utility model, the first side surface 210 also includes a transition surface 213, one end of which is connected to the inner wall of the cup body 100 and the other end is connected to the sealing surface 211. The transition surface 213 is set at an angle to the sealing surface 211, and the transition surface 213 is lower than the sealing surface 211.

[0047] By providing a transition surface 213 that is lower than the sealing surface 211, the sealing film avoids the risk of puncture at the inner wall of the cup body 100 after covering the sealing surface 211, thus ensuring the integrity of the sealing film before and after sealing.

[0048] Reference Figure 3 and Figure 6 In some embodiments of this utility model, the transition surface 213 is an inclined plane that slopes toward the bottom of the cup body 100.

[0049] First, the inclined plane effectively guides any potentially overflowing liquid down the slope, preventing liquid accumulation at the edge of the sealing surface 211. Second, the inclined plane structure provides a smooth transition support for the sealing film, effectively dispersing stress and preventing the film from cracking at the edges due to sharp bends. Furthermore, this planar structure is simple, easy to process and manufacture, which helps ensure molding quality and reduce production costs.

[0050] Of course, in other examples, the transition surface 213 is an arc-shaped surface that bends toward the bottom of the cup body 100. The arc-shaped surface of the transition surface 213 can provide a continuous and smooth stress transition for the sealing film, effectively eliminating the stress concentration phenomenon at the edge of the sealing surface 211, and preventing the sealing film from breaking due to excessive local stress at the bend, thereby ensuring the structural integrity and sealing reliability of the sealing film.

[0051] Understandably, referring to Figure 3 and Figure 6 In some examples of this utility model, the included angle β between the sealing surface 211 and the transition surface 213 is 5 to 20 degrees.

[0052] The aforementioned angle setting gives this part robust mechanical properties, while its structural form facilitates mold forming and demolding, ensuring consistent product quality and reducing production costs.

[0053] Specifically, in the above embodiments, the sealing surface 211 is a horizontal plane and the transition surface 213 is an inclined plane. Therefore, the included angle β between the sealing surface 211 and the transition surface 213 can be 5 degrees, 10 degrees or 20 degrees.

[0054] Reference Figure 3 and Figure 6In this embodiment, the angle between the sealing surface 211 and the transition surface 213 is 10 degrees. It should be noted that the value of this angle includes, but is not limited to, the values ​​mentioned above, and a reasonable error range is allowed.

[0055] It should be noted that in some embodiments of this utility model, the sealing surface 211 and the operating surface 212, as well as the sealing surface 211 and the transition surface 213, are connected by a circular arc transition.

[0056] Understandably, referring to Figure 3 and Figure 6 In some examples of this utility model, the cup rim 200 has a second side surface 220 on its lower side in the thickness direction, and the second side surface 220 is connected to the outer wall of the cup body 100; the second side surface 220 and the first side surface 210 are correspondingly arranged in the thickness direction of the cup rim 200. The second side 220 is horizontally positioned.

[0057] The horizontally positioned second side 220 provides a stable and flat mating reference surface for the sealing film and sealing surface 211. This horizontal surface ensures uniform stress distribution at the connection points, effectively avoiding localized stress concentration caused by tilted or curved contact, and significantly improving the overall structural strength of the packaging cup and the long-term reliability of the connection seal.

[0058] Of course, in some other examples, the second side 220 is curved.

[0059] The curved second side 220 effectively disperses the stress on the cup rim 200 through its curved shape, avoiding stress concentration at abrupt changes in thickness, thereby significantly improving the impact resistance and structural durability of the cup body 100 under pressure, drops, or stacking. This curved structure acts as a natural reinforcing rib, enhancing the overall rigidity of the cup body 100 without increasing material usage. The curved shape is more ergonomic, conforming naturally to the user's hand or lips, improving grip comfort and drinking experience. Simultaneously, the curved transition avoids contact with sharp edges, improving safety during use. The first side 210 and the second side 220 are the upper and lower surfaces of the cup rim 200. The second side 220 being horizontal can be understood as the first side 210 and the second side 220 having different design outlines; or the second side 220 being curved, and the first side 210 and the second side 220 having the same design outline.

[0060] Understandably, referring to Figure 3 and Figure 6 In some examples of this utility model, the connection between one end of the first side surface 210 and the end face of the cup rim 200 away from the cup body 100, and the connection between the other end of the first side surface 210 and the inner wall of the cup body 100, are both arc transition connections.

[0061] The above design helps to eliminate stress concentration that is easily caused by traditional right-angle or acute-angle connections. This design enables stress to be smoothly and continuously distributed within the arc surface, significantly improving the packaging cup's (especially in key stress-bearing areas such as the connection between the cup rim 200 and the cup body 100) resistance to cracking and fatigue under pressure, drop, or impact, greatly enhancing the product's structural integrity and service life.

[0062] Reference Figure 2 and Figure 3 In some examples, one end of the first side surface 210, namely the operating surface 212, is connected to the end face of the cup rim 200 away from the cup body 100 at an angle (i.e. forming a distinct angle or sharp corner), and the other end of the first side surface 210, namely the transition surface 213, is connected to the inner wall of the cup body 100 by an arc transition.

[0063] Specifically, refer to Figure 5 and Figure 6 In some examples, one end of the first side surface 210 is connected to the end face of the cup rim 200 away from the cup body 100 by an arc transition. This can be understood as the operating surface 212 of the first side surface 210 and the vertical end face of the cup rim 200 away from the cup body 100 by an arc transition in the thickness direction.

[0064] The arc transition between the other end of the first side surface 210 and the inner wall of the cup body 100 can be understood as the arc transition between the transition surface 213 of the first side surface 210 and the inner wall of the cup body 100.

[0065] Understandably, referring to Figure 2 , Figure 3 , Figure 5 and Figure 6 In some examples of this utility model, at least one of the following is a circular arc transition connection: one end of the second side 220 is connected to the end face of the cup rim 200 away from the cup body 100, and the other end of the second side 220 is connected to the outer wall of the cup body 100.

[0066] Through the above design, the arc transition connection helps to eliminate the stress concentration phenomenon that is easily caused by traditional right-angle or acute-angle connections. This design enables stress to be smoothly and continuously distributed and transferred within the arc surface, significantly improving the packaging cup's (especially in key stress-bearing areas such as the connection between the cup rim 200 and the cup body 100) resistance to cracking and fatigue under pressure, drop, or impact, greatly enhancing the product's structural integrity and service life.

[0067] Specifically, refer to Figure 2 , Figure 3 , Figure 5 and Figure 6In this embodiment, one end of the second side surface 220 is connected to the end face of the cup rim 200 away from the cup body 100 by an arc transition. This can be understood as the area on the second side surface 220 corresponding to the operating surface 212 being connected to the vertical end face of the cup rim 200 away from the cup body 100 by an arc transition in the thickness direction.

[0068] The arc transition between the other end of the second side 220 and the inner wall of the cup body 100 can be understood as the area on the second side 220 corresponding to the transition surface 213 being connected to the inner wall of the cup body 100 via an arc transition. Of course, in other examples, one of the connections between one end of the second side surface 220 and the end face of the cup rim 200 away from the cup body 100, and the other connection between the other end of the second side surface 220 and the inner wall of the cup body 100, is a rounded transition, while the other is a direct angled transition (i.e., forming a distinct edge or sharp corner). This is not limited here. It is understood that the radius of the rounded corner at the above-mentioned rounded transition connection position can be set to 0.2mm or 0.3mm.

[0069] It should be noted that in some examples of this utility model, the thickness of the cup rim 200 of the packaging cup is 0.8mm to 1.2mm, and the value is not limited to the above values, and a reasonable error range is allowed.

[0070] Referring to the figures, in some examples, the thickness of the cup rim 200 at the operating surface 212 can be set to 0.8 mm, while the thickness of the cup rim 200 at the sealing surface 211 can be 1.0 mm or 1.2 mm.

[0071] In some embodiments, the maximum outer diameter of the cup body 100, corresponding to the cup opening 110, is L1, which is the dimension between the opposite sides of the cup rim 200. L1 is 87.5±0.5mm. The dimension between the opposite sides of the outer wall of the cup body 100 is L2, which is 80.2±0.5mm. The thickness of the side wall of the cup body 100 is 0.6±0.5mm. The dimension on the cup rim 200 corresponding to the sealing surface 211 is 1.2±0.1mm. The included angle α between the sealing surface 211 and the transition surface 213 and the included angle β between the sealing surface 211 and the transition surface 213 are both 10 degrees. The width of the cup rim 200 is 4.1mm. The radius of the arc between the second side surface 220 of the cup rim 200 and its vertical side surface is 0.3mm. The radius of the arc between the transition surface 213 of the cup rim 200 and the inner wall of the cup body 100 is 0.3mm.

[0072] Understandably, in some embodiments, the bottom wall of the cup body 100 adopts an upwardly convex arc-shaped design. This structure effectively improves pressure resistance during transportation and stacking, reducing the risk of the bottom wall being crushed or deformed, thereby better protecting the contents. When used as a yogurt cup, the arc-shaped bottom wall also makes it easier for users to scrape off any residual yogurt from the cup wall, contributing to a better user experience.

[0073] Of course, in other examples, the bottom wall of the cup body 100 can also be designed horizontally, which is not limited here.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A packaging cup, characterized in that, include: The cup body has a rim; A rim is provided circumferentially along the mouth of the cup body, and the rim has a first side surface on its upper side in the thickness direction, the first side surface being connected to the inner wall of the cup body; The first side includes at least a sealing surface and an operating surface. Along the horizontal direction of the packaging cup, the sealing surface is close to the inner wall of the cup and is used to achieve a sealed connection with the sealing film. The operating surface is located on the side away from the inner wall of the cup. The operating surface is set at an angle to the sealing surface, and along the thickness direction of the cup rim, the operating surface is lower than the sealing surface to provide operating space for separating the sealing surface from the sealing film.

2. The packaging cup according to claim 1, characterized in that, The sealing surface is horizontally positioned.

3. The packaging cup according to claim 2, characterized in that, The operating surface is an inclined plane that slopes toward the bottom of the cup.

4. The packaging cup according to claim 3, characterized in that, The angle α between the sealing surface and the operating surface is 5 to 20 degrees.

5. The packaging cup according to any one of claims 1 to 4, characterized in that, The first side also includes a transition surface, one end of which is connected to the inner wall of the cup body and the other end is connected to the sealing surface; The transition surface is set at an angle to the sealing surface, and the transition surface is lower than the sealing surface.

6. The packaging cup according to claim 5, characterized in that, The transition surface is an inclined plane that slopes toward the bottom of the cup.

7. The packaging cup according to claim 6, characterized in that, The included angle β between the sealing surface and the transition surface is 5 to 20 degrees.

8. The packaging cup according to claim 1, characterized in that, The cup has a second side surface along its thickness direction on its lower side, and the second side surface is connected to the outer wall of the cup body; The second side is provided corresponding to the first side along the thickness direction of the cup rim; The second side is either horizontally or curved.

9. The packaging cup according to claim 1 or 8, characterized in that, At least one of the following connections is formed: one end of the first side face is connected to the edge of the cup away from the cup body, and the other end of the first side face is connected to the inner wall of the cup body.

10. The packaging cup according to claim 8, characterized in that, At least one of the following connections is formed: one end of the second side face is connected to the edge of the cup away from the cup body, and the other end of the second side face is connected to the outer wall of the cup body.