Self-sealing aluminum foil bag for food packaging
By incorporating fixing blocks and limiting grooves within the self-sealing aluminum foil bag, the clamping plate can tightly hold the aluminum foil bag, solving the problem of air inflow and achieving better food preservation.
Patent Information
- Application Number
- CN202520396716.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-08
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-03-08
AI Technical Summary
When the self-sealing aluminum foil bag is squeezed to seal, air can easily flow into the bag, affecting the food preservation effect.
A self-sealing aluminum foil bag was designed. By setting a fixed block and a limiting groove, the clamping plate can tightly clamp the aluminum foil bag body to form a barrier and prevent air from flowing in. At the same time, a movable block and a connecting shaft are set to allow the clamping plate to be adjusted to a suitable state to expel air.
This effectively prevents air from re-entering the bag, forming a double seal to ensure the freshness of food and prevent air from entering if the self-sealing strip is accidentally opened.
Smart Images

Figure CN223736648U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aluminum foil bags, and in particular to a self-sealing aluminum foil bag for food packaging. Background Technology
[0002] Self-sealing aluminum foil bags are of great significance in the food packaging industry due to their excellent sealing and barrier properties. They can effectively prevent food from oxidizing and deteriorating, maintain the freshness and taste of food, and at the same time block the intrusion of external moisture, odors and microorganisms, extend the shelf life of food, and meet the needs of modern consumers for food safety and health.
[0003] After removing some food from the aluminum foil bag, in order to prevent the remaining food from oxidizing and spoiling, it is generally necessary to expel the air from the aluminum foil bag before sealing it. Without professional air-expelling tools, people usually squeeze the bag directly by hand to expel the air from the bag opening, and then squeeze the self-sealing strip to seal the aluminum foil bag. However, during the process of squeezing the self-sealing strip, air will flow into the bag from the bag opening, thereby reducing the air-expelling effect and affecting the freshness of the food. To address this, we propose a self-sealing aluminum foil bag for food packaging. Utility Model Content
[0004] The main objective of this invention is to provide a self-sealing aluminum foil bag for food packaging, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A self-sealing aluminum foil bag for food packaging includes an aluminum foil bag body. A limiting block is slidably engaged with the outer surface of the aluminum foil bag body. Two sets of movable blocks are fixedly installed on the outer surface of the limiting block. A connecting shaft is slidably connected to the inner wall of each of the two sets of movable blocks. A clamping plate is fixedly installed at the tail end of each of the two sets of connecting shafts, and the outer surface of the clamping plate is movably connected to the outer surface of the aluminum foil bag body. Multiple limiting rods are fixedly installed at the front end of one set of the two sets of connecting shafts, and the limiting rods are slidably engaged with the inner wall of the other set of connecting shafts. A fixing block is fixedly installed on the outer surface of the tail end of each of the two sets of connecting shafts. A limiting groove is formed in the inner wall of each of the two sets of movable blocks, and the fixing block is movably connected to the inner wall of the limiting groove.
[0007] Preferably, the fixing block is made of a plastic material with good elasticity, and the fixing block is adapted to the limiting groove.
[0008] Preferably, the front of the aluminum foil bag body has a strip-shaped opening, and the movable block is slidably engaged with the inner wall of the strip-shaped opening.
[0009] Preferably, a pull ring is fixedly installed on the outer surface of the clamping plate, and two sets of guide rails are fixedly installed on one side of the aluminum foil bag body. The guide rails are made of rubber, and the inner wall of the limiting block is slidably engaged with the outer surface of the two sets of guide rails.
[0010] Preferably, an easy-tear opening is provided on the other side of the aluminum foil bag body, and a self-sealing strip is fixedly installed at the front end of the aluminum foil bag body.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] In this invention, by setting a fixing block and a limiting groove, when the fixing block and the limiting groove are engaged together, the clamping plate can tightly clamp the aluminum foil bag body, thereby forming a barrier. This not only prevents air from flowing back into the food when the self-sealing strip is squeezed, but also forms a double seal to prevent the self-sealing strip from accidentally opening during storage and allowing air to flow into the food, thus ensuring the freshness of the food. By setting a movable block, a connecting shaft, and a limiting rod, the two sets of clamping plates can be fixed and rotated at the same time, so as to adjust the clamping plates to a suitable state. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of a self-sealing aluminum foil bag for food packaging according to this utility model;
[0014] Figure 2 This is a schematic diagram of the aluminum foil bag body structure of a self-sealing aluminum foil bag for food packaging according to this utility model;
[0015] Figure 3 This is a split view of the internal structure of the movable block of a self-sealing aluminum foil bag for food packaging according to this utility model;
[0016] Figure 4 This is a schematic diagram of the movable block structure of a self-sealing aluminum foil bag for food packaging according to this utility model.
[0017] In the diagram: 1. Aluminum foil bag body; 2. Limiting block; 3. Movable block; 4. Connecting shaft; 5. Clamping plate; 6. Limiting rod; 7. Fixing block; 8. Limiting groove; 9. Strip opening; 10. Pull ring; 11. Guide rail; 12. Easy-tear opening; 13. Self-sealing adhesive strip. Detailed Implementation
[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments. Example 1:
[0019] like Figure 1-4As shown, a self-sealing aluminum foil bag for food packaging includes an aluminum foil bag body 1. A limiting block 2 is slidably engaged with the outer surface of the aluminum foil bag body 1. Two sets of movable blocks 3 are fixedly installed on the outer surface of the limiting block 2. Connecting shafts 4 are slidably connected to the inner walls of both sets of movable blocks 3. Clamping plates 5 are fixedly installed at the tail ends of both sets of connecting shafts 4, and the outer surface of the clamping plates 5 is movably connected to the outer surface of the aluminum foil bag body 1. When the two sets of clamping plates 5 approach each other, they can tightly clamp the aluminum foil bag body 1. Multiple limiting rods 6 are fixedly installed at the front end of one set of connecting shafts 4, and the limiting rods 6 are slidably engaged with the inner wall of the other set of connecting shafts 4. Three sets of limiting rods 6 are provided to connect the two sets of connecting shafts 4, and under the action of the limiting rods 6, the two sets of connecting shafts 4 can rotate synchronously. The two sets of clamping plates 5 are rotated synchronously to adjust the clamping plates 5 to a horizontal state. The outer surfaces of the tail ends of the two sets of connecting shafts 4 are fixedly installed with fixing blocks 7. The inner walls of the two sets of movable blocks 3 are provided with limit grooves 8, and the fixing blocks 7 are movably connected to the inner walls of the limit grooves 8. When the two sets of clamping plates 5 are pushed in opposite directions, the clamping plates 5 drive the connecting shafts 4 to move, which in turn drives the fixing blocks 7 to move. When the fixing blocks 7 enter the movable blocks 3, they will undergo elastic deformation. After the fixing blocks 7 enter the limit grooves 8, they will undergo elastic recovery, so that the two are locked together, thereby fixing the clamping plates 5 and the movable blocks 3 together. At this time, the two sets of clamping plates 5 can tightly clamp the aluminum foil bag body 1. When the clamping plates 5 clamp the aluminum foil bag body 1 horizontally, they can form an effective barrier to isolate the air.
[0020] The fixing block 7 is made of a relatively elastic plastic material and is adapted to the limiting groove 8. A strip-shaped opening 9 is provided on the front of the aluminum foil bag body 1, and the movable block 3 is slidably engaged with the inner wall of the strip-shaped opening 9, allowing the user to push the movable block 3 along the inner wall of the strip-shaped opening 9. A pull ring 10 is fixedly installed on the outer surface of the clamping plate 5, which is used to pull the clamping plate 5 to easily pull the fixing block 7 out of the limiting groove 8. When the fixing block 7 is completely disengaged from the movable block 3, the connecting shaft 4 can slide along the movable block 8. The inner wall of the moving block 3 rotates to adjust the clamping plate 5 to a horizontal position. Two sets of guide rails 11 are fixedly installed on one side of the aluminum foil bag body 1. The guide rails 11 are made of rubber and can deform with the aluminum foil bag body 1. The guide rails 11 are used to limit the sliding of the limiting block 2. The inner wall of the limiting block 2 is slidably engaged with the outer surface of the two sets of guide rails 11. An easy-tear opening 12 is provided on the other side of the aluminum foil bag body 1. A self-sealing adhesive strip 13 is fixedly installed at the front end of the aluminum foil bag body 1.
[0021] It should be noted that this utility model is a self-sealing aluminum foil bag for food packaging. In use, pull the two sets of pull rings 10 to pull the two sets of clamping plates 5 away from the aluminum foil bag body 1. At the same time, the fixing between the connecting shaft 4 and the movable block 3 is released. Then push the limiting block 2 to move the clamping plate 5 to the top of the food. Then rotate the clamping plate 5 to adjust it to a horizontal state. Squeeze the aluminum foil bag body 1 to expel the air in the bag from the bag opening. Then quickly squeeze the two sets of pull rings 10 so that the two sets of clamping plates 5 quickly clamp the aluminum foil bag body 1. Then squeeze the self-sealing strip 13. When the clamping plate 5 tightly clamps the aluminum foil bag body 1, it forms a barrier, which not only prevents air from flowing back into the food from the bag opening when the self-sealing strip 13 is squeezed, but also forms a double seal to prevent the strip from accidentally opening and allowing air to enter the aluminum foil bag body 1.
[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A self-sealing aluminium foil bag for food packaging comprising an aluminium foil bag body (1), characterised in that: The outer surface of the aluminum foil bag body (1) is slidably connected with a limiting block (2), the outer surface of the limiting block (2) is fixedly connected with two groups of movable blocks (3), the inner walls of the two groups of movable blocks (3) are slidably connected with connecting shafts (4), the tail ends of the two groups of connecting shafts (4) are fixedly connected with clamping plates (5), the outer surface of the clamping plate (5) is movably connected with the outer surface of the aluminum foil bag body (1), the front end of one group of the two groups of connecting shafts (4) is fixedly connected with a plurality of limiting rods (6), the limiting rod (6) is slidably connected with the inner wall of the other group of connecting shafts (4), the outer surface of the tail end of the two groups of connecting shafts (4) is fixedly connected with a fixed block (7), the inner walls of the two groups of movable blocks (3) are provided with limiting grooves (8), and the fixed block (7) is movably connected with the inner wall of the limiting groove (8).
2. A self-sealing aluminium foil bag for food packaging according to claim 1, characterized in that: The fixed block (7) is made of plastic material with good elasticity, and the fixed block (7) is matched with the limiting groove (8).
3. A self-sealing aluminium foil bag for food packaging according to claim 1, characterized in that: The front surface of the aluminum foil bag body (1) is provided with a strip-shaped opening (9), and the movable block (3) is slidably connected with the inner wall of the strip-shaped opening (9).
4. The self-sealing aluminum foil pouch for food packaging according to claim 1, wherein: The outer surface of the clamping plate (5) is fixedly connected with a pull ring (10), one side of the aluminum foil bag body (1) is fixedly connected with two groups of guide rail strips (11), the guide rail strips (11) are made of rubber material, and the inner wall of the limiting block (2) is slidably connected with the outer surfaces of the two groups of guide rail strips (11).
5. The self-sealing aluminum foil bag for food packaging according to claim 1, wherein: The other side of the aluminum foil bag body (1) is provided with a tearable opening (12), and the front end of the aluminum foil bag body (1) is fixedly connected with a self-sealing adhesive tape (13).