An easy opening lid structure for a packaging box
By combining the inner and outer lids, the problem of the pull-ring easy-open lid being difficult to open and the screw-on lid having poor sealing is solved, realizing a convenient, safe, and theft-proof way to open the packaging box, ensuring the airtightness and protection of food or beverages.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUAIAN ZHUOMEI PACKAGING TECHNOLOGY CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-06-09
AI Technical Summary
Existing pull-tab type easy-open caps are difficult and require a lot of effort to open, and the sealing performance of the unscrew caps is poor, which can easily lead to food or beverage contamination.
An easy-open packaging box structure was designed, including an inner lid and an outer lid. The inner lid is sealed with a sealing film, and the outer lid is opened easily by cutting the film with a ring cutter and a sliding toothed groove structure. The inner lid is automatically lifted by an elastic pull ring, and the anti-theft connecting strip ensures sealing and anti-theft.
It achieves convenient opening, good sealing and anti-theft packaging box sealing, avoids food or beverage contamination and external impact damage, and provides reliability and safety in the opening process.
Smart Images
Figure CN224336165U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging box lid technology, and in particular to an easy-open packaging box lid structure. Background Technology
[0002] Currently, there are various types of packaging boxes on the market, and the sealing methods of different packaging boxes are also different. For convenience and other reasons, more and more packaging boxes adopt easy-open lids. Compared with traditional lids, easy-open lids open in one step, reducing operation steps and physical exertion. Users can directly open canned goods, beverages, and other packaging by hand, eliminating the need for can openers or knives, which is especially suitable for fast-paced lifestyles.
[0003] Currently, the most common easy-open caps include pull-ring caps and screw-on caps. Pull-ring caps are not easy to open; you usually need to pry the ring open with your fingernail first, then pull it open forcefully. This is not only time-consuming and laborious, but also risks spilling the food or beverage inside if you use too much force. While screw-on caps are easy to open, their sealing is not as good, especially when exposed to water, which can easily contaminate the food or beverage inside the packaging. Utility Model Content
[0004] In view of this, the purpose of this utility model is to propose an easy-open lid structure for packaging boxes, so as to solve the technical problems of the pull-ring easy-open lid being difficult to open and the screw-open lid having insufficient sealing performance.
[0005] To achieve the above objectives, this utility model provides an easy-open lid structure for a packaging box, comprising a cylindrical canned packaging box, wherein the canned packaging box has an opening only at the top, and the easy-open lid structure further includes:
[0006] The inner cover portion includes an inner sealing piece that covers the opening at the top of the canned packaging box. The outer edge of the inner sealing piece is also provided with a sealing film at the connection between it and the canned packaging box, which is used to completely seal the top port of the canned packaging box.
[0007] An outer cover that covers the top of the canned packaging box is used to protect the inner cover. The outer cover is rotatably connected to the canned packaging box, and an anti-theft connecting strip is fixedly connected between the outer cover and the canned packaging box. A ring cutter is also fixedly connected to the bottom of the outer cover for cutting the sealing film.
[0008] Furthermore, a fixing connection part is provided at the outer edge of the inner sealing sheet, and the inner sealing sheet is fixedly connected to the canned packaging box through the fixing connection part.
[0009] Furthermore, the inner sealing sheet is provided with a pull ring, and the pull ring is located on the other side relative to the fixed connection part. The pull ring is fixedly connected to the inner sealing sheet by an elastic metal sheet.
[0010] Furthermore, the circumferential cutter is made of highly resilient PVC material, and the circumferential cutter is bent inside the outer cover, with the lower end of the circumferential cutter abutting against the fixed connection part.
[0011] Furthermore, the fixed connection portion occupies 1 / 5 to 1 / 6 of the outer edge of the inner sealing sheet, and there is a gap between the remaining part of the outer edge of the inner sealing sheet and the canned packaging box. A sealing film is only provided at the gap between the inner sealing sheet and the canned packaging box.
[0012] Furthermore, the anti-theft connecting strip is provided in multiple parts, and the anti-theft connecting strip is a disposable breakable ring made of plastic.
[0013] Furthermore, the outer wall of the canned packaging box is provided with a sliding outer ring, which is fixedly connected to the canned packaging box. The inner side wall of the outer cover is also fixedly connected with an inner tooth, which is slidably connected to the lower end of the sliding outer ring.
[0014] Furthermore, the lower end of the inner teeth of the outer cover is provided with an arc-shaped chamfer, the sliding outer ring is provided with an opening tooth groove, and the width of the opening tooth groove is greater than the width of the inner teeth of the outer cover. A limiting block is also provided at the lower end of the sliding outer ring on one side of the opening tooth groove.
[0015] The beneficial effects of this utility model are as follows: 1. By setting an inner cover portion to seal the canned packaging box, the inner sealing piece in the inner cover portion is used to cover the opening at the top of the canned packaging box, and then the gap between the inner sealing piece and the canned packaging box is sealed by a sealing film, ensuring that the inside of the canned packaging box remains completely sealed. This prevents the food or other items inside the canned packaging box from being contaminated by the outside environment.
[0016] 2. In addition, an outer lid is provided to cover the top of the canned packaging box, protecting the inner lid from damage caused by external impacts. Furthermore, multiple anti-theft connecting strips are installed between the outer lid and the canned packaging box; the condition of these strips indicates whether the outer lid has been opened.
[0017] 3. A ring cutter is installed at the bottom of the outer cover, and the outer cover is rotatably connected to the canned packaging box through a sliding outer ring. The sliding outer ring is equipped with a limit stop and a lid opening groove. If you want to open the outer cover, you need to rotate the outer cover one full turn. During this process, the ring cutter can cut the sealing film, making it easy to open the sealing sheet.
[0018] 4. The inner sealing sheet is also connected to a pull ring by an elastic metal sheet. The outer cover can press the pull ring inside, and when the outer cover is opened, the pull ring will automatically lift up under the action of the elastic metal sheet, making it easy to pull open the inner sealing sheet. Attached Figure Description
[0019] 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 only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure and principle of the device of this utility model.
[0021] Figure 2 This is a schematic diagram of the structural principle of the inner cover part in the device of this utility model.
[0022] Figure 3 This is a schematic diagram of the connection structure of the inner sealing sheet in the device of this utility model.
[0023] Figure 4 This is a schematic diagram of the connection of the sliding outer ring in the device of this utility model.
[0024] Figure 5 This is a schematic diagram of the bottom structure of the outer cover in the device of this utility model.
[0025] Figure 6 This is a schematic diagram of the internal structure of the device of this utility model.
[0026] Figure 7 for Figure 6 Enlarged view of section A.
[0027] The diagram is marked as follows:
[0028] 101. Canned packaging box; 102. Outer lid; 103. Anti-theft connecting strip; 104. Inner sealing sheet; 105. Sealing film; 106. Pull ring; 107. Fixed connecting part; 108. Sliding outer ring; 109. Opening tooth groove; 110. Limiting block; 111. Inner teeth of outer lid; 112. Ring cutter. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.
[0030] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0031] The first aspect of this utility model is as follows: Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the most commonly used easy-open caps, such as pull-tab caps and screw-on caps, all have various drawbacks. Pull-tab caps are not easy to open; generally, one needs to pry the tab open with a fingernail first, and then pull it open forcefully, which is not only time-consuming and laborious, but also prone to spilling the food and beverage inside if too much force is used. While screw-on caps are easy to open, their sealing is not good, especially when exposed to water, easily contaminating the food and beverage inside the packaging. This utility model makes a targeted improvement by first providing an opening at the top of the cylindrical can packaging box 101, and only providing an opening at the top.
[0032] Then, an inner cover is provided at the upper opening of the canned packaging box 101. The inner cover includes an inner sealing piece 104 that covers the upper opening of the canned packaging box 101. In addition, a sealing film 105 is provided at the connection between the outer edge of the inner sealing piece 104 and the canned packaging box 101 to completely seal the upper port of the canned packaging box 101.
[0033] The inner sealing sheet 104 has a fixed connecting part 107 at its outer edge, and the inner sealing sheet 104 is fixedly connected to the canned packaging box 101 through the fixed connecting part 107. The fixed connecting part 107 occupies 1 / 5 to 1 / 6 of the outer edge of the inner sealing sheet 104, while there is a gap between the remaining part of the outer edge of the inner sealing sheet 104 and the canned packaging box 101, and a sealing film 105 is provided only at the gap between the inner sealing sheet 104 and the canned packaging box 101.
[0034] The inner sealing strip 104 is used to cover the opening at the top of the canned packaging box 101, and then the gap between the inner sealing strip 104 and the canned packaging box 101 is sealed by the sealing film 105 to ensure that the inside of the canned packaging box 101 remains completely sealed. This prevents the food or other items inside the canned packaging box 101 from being contaminated by the outside environment.
[0035] Additionally, an outer cover 102 is provided at the upper end of the canned packaging box 101. The outer cover 102 covers the upper end of the canned packaging box 101 and is used to protect the inner cover. The outer cover 102 is rotatably connected to the canned packaging box 101, and an anti-theft connecting strip 103 is fixedly connected between the outer cover 102 and the canned packaging box 101.
[0036] Therefore, the outer cover 102 can protect the inner cover from damage caused by external impact. In addition, multiple anti-theft connecting strips 103 are provided between the outer cover 102 and the can packaging box 101. The condition of the anti-theft connecting strips 103 can be used to determine whether the outer cover 102 has been opened.
[0037] Preferably, there are several anti-theft connecting strips 103, and the anti-theft connecting strips 103 are disposable breakable rings made of plastic.
[0038] The first aspect of this utility model is as follows: Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in order to facilitate opening the easy-open cover, this embodiment also has a ring cutter 112 fixedly connected to the bottom of the outer cover 102 for cutting the sealing film 105. The ring cutter 112 is made of high-resilience PVC material, and the ring cutter 112 is bent inside the outer cover 102, with the lower end of the ring cutter 112 abutting against the fixed connection part 107.
[0039] In addition, a sliding outer ring 108 is provided on the outer wall of the canned packaging box 101. The sliding outer ring 108 is fixedly connected to the canned packaging box 101. An outer cover inner tooth 111 is also fixedly connected to the inner side wall of the outer cover 102. The outer cover inner tooth 111 is slidably connected to the lower end of the sliding outer ring 108. The lower end of the outer cover inner tooth 111 is provided with an arc-shaped chamfer. The sliding outer ring 108 is provided with a lid-opening groove 109, and the width of the lid-opening groove 109 is greater than the width of the outer cover inner tooth 111. A limiting block 110 is also provided at the lower end of the sliding outer ring 108 on one side of the lid-opening groove 109.
[0040] A ring cutter 112 is provided at the bottom of the outer cover 102, and the outer cover 102 is rotatably connected to the canned packaging box 101 via a sliding outer ring 108. The sliding outer ring 108 is provided with a limit stop 110 and a lid opening groove 109. If you want to open the outer cover 102, you need to rotate the outer cover 102 one turn. During this process, the ring cutter 112 can cut the sealing film 105, making it easy to open the sealing sheet 104.
[0041] Preferably, the inner sealing sheet 104 is provided with a pull ring 106, and the pull ring 106 is located on the other side relative to the fixed connection part 107. The pull ring 106 is fixedly connected to the inner sealing sheet 104 by an elastic metal sheet. The outer cover 102 can press the pull ring 106 inside, and when the outer cover 102 is opened, the pull ring 106 will automatically lift up under the action of the elastic metal sheet, making it easy to pull open the inner sealing sheet 104.
[0042] In summary, this utility model seals the canned packaging box 101 by providing an inner cover. The inner sealing piece 104 covers the upper opening of the canned packaging box 101, and a sealing film 105 seals the gap between the inner sealing piece 104 and the canned packaging box 101, ensuring a completely sealed interior. This prevents contamination of the food or other items inside the canned packaging box 101. Additionally, an outer cover 102 covers the upper part of the canned packaging box 101, protecting the inner cover from damage caused by external impacts. Furthermore, multiple anti-theft connecting strips 103 are provided between the outer cover 102 and the canned packaging box 101; the breakage of these anti-theft connecting strips 103 indicates whether the outer cover 102 has been opened.
[0043] A ring cutter 112 is provided at the bottom of the outer cover 102, and the outer cover 102 is rotatably connected to the can packaging box 101 via a sliding outer ring 108. The sliding outer ring 108 is provided with a limit stop 110 and a lid opening groove 109. To open the outer cover 102, it is necessary to rotate the outer cover 102 one full turn. During this process, the ring cutter 112 can cut the sealing film 105, making it easy to open the sealing sheet 104. The inner sealing sheet 104 is also connected to a pull ring 106 via an elastic metal sheet. The outer cover 102 can press the pull ring 106 inside. After the outer cover 102 is opened, the pull ring 106 will automatically lift up under the action of the elastic metal sheet, making it easy to pull open the inner sealing sheet 104.
[0044] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention includes the claims being limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.
[0045] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An easy-open packaging box structure, comprising a cylindrical canned packaging box (101), wherein the canned packaging box (101) has an opening only at the top, characterized in that, The easy-open lid structure also includes: The inner cover portion includes an inner sealing piece (104) that covers the upper opening of the canned packaging box (101). The outer edge of the inner sealing piece (104) is also provided with a sealing film (105) at the connection between it and the canned packaging box (101) to completely seal the upper port of the canned packaging box (101). An outer cover (102) covering the upper end of the canned packaging box (101) is used to protect the inner cover. The outer cover (102) is rotatably connected to the canned packaging box (101), and an anti-theft connecting strip (103) is fixedly connected between the outer cover (102) and the canned packaging box (101). A ring cutter (112) is also fixedly connected to the bottom of the outer cover (102) for cutting the sealing film (105).
2. The easy-open lid structure of a packaging box according to claim 1, characterized in that, The inner sealing sheet (104) is provided with a fixed connection part (107) at its outer edge, and the inner sealing sheet (104) is fixedly connected to the canned packaging box (101) through the fixed connection part (107).
3. The easy-open lid structure of a packaging box according to claim 2, characterized in that, The inner sealing sheet (104) is provided with a pull ring (106), and the pull ring (106) is located on the other side relative to the fixed connection part (107). The pull ring (106) is fixedly connected to the inner sealing sheet (104) by an elastic metal sheet.
4. The easy-open lid structure of a packaging box according to claim 2, characterized in that, The ring cutter (112) is made of high-resilience PVC material and is bent inside the outer cover (102). The lower end of the ring cutter (112) abuts against the fixed connection part (107).
5. The easy-open lid structure of a packaging box according to claim 2, characterized in that, The fixed connection part (107) occupies 1 / 5 to 1 / 6 of the outer edge of the inner sealing piece (104), and there is a gap between the remaining part of the outer edge of the inner sealing piece (104) and the canned packaging box (101). A sealing film (105) is provided only at the gap between the inner sealing piece (104) and the canned packaging box (101).
6. The easy-open lid structure of a packaging box according to claim 1, characterized in that, The anti-theft connecting strip (103) is provided in several parts, and the anti-theft connecting strip (103) is a one-time breakable ring made of plastic material.
7. The easy-open lid structure of a packaging box according to claim 1, characterized in that, The outer wall of the canned packaging box (101) is also provided with a sliding outer ring (108), which is fixedly connected to the canned packaging box (101). The inner wall of the outer cover (102) is also fixedly connected with an inner tooth (111), which is slidably connected to the lower end of the sliding outer ring (108).
8. The easy-open lid structure of a packaging box according to claim 7, characterized in that, The lower end of the inner teeth (111) of the outer cover is provided with an arc-shaped chamfer, and the sliding outer ring (108) is provided with an opening tooth groove (109), and the width of the opening tooth groove (109) is greater than the width of the inner teeth (111) of the outer cover. The lower end of the sliding outer ring (108) on one side of the opening tooth groove (109) is also provided with a limiting block (110).