Leakage-proof self-standing packaging bag capable of being sealed repeatedly
By installing a support plate and bolt fixing structure at the bottom of the stand-up pouch, combined with Velcro and sealing components, the problems of tipping and liquid leakage of the stand-up pouch are solved, achieving stable support and convenient sealing, and improving the safety and convenience of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN HAOCAI PLASTIC TECHNOLOGY CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-05
AI Technical Summary
Existing stand-up pouches are prone to tipping over during the heat-sealing process, resulting in instability at the bottom and potential leakage of internal liquids. They also lack an effective resealing structure.
First and second support plates are installed at the bottom of the stand-up pouch and secured to the fixing nut by connecting shafts and bolt threads. Combined with Velcro and sealing components, stable support and resealing are achieved.
It improves the stability of stand-up pouches, prevents tipping and liquid leakage, and provides a convenient liquid discharge assembly to control the amount of liquid poured out, enhancing ease of use and safety.
Smart Images

Figure CN224198288U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stand-up pouch technology, specifically to a leak-proof, resealable stand-up pouch. Background Technology
[0002] The main functions of stand-up pouches include protecting products, facilitating carrying and use, enhancing product appeal, and promoting sales. Stand-up pouches can effectively protect the contents from moisture, contamination, or spoilage. Moreover, stand-up pouches take up little space, allowing more goods to be placed on the same shelf, arranged neatly, without needing to be pressed down, making it more convenient for consumers to take out the goods.
[0003] Chinese patent CN205256933U discloses a resealable plastic packaging bag, comprising: a bag opening; a bag body connected to the bag opening; a sealing film disposed on the surface of the bag body, the bag opening being disposed on the lower inner side of the sealing film, the sealing film having an opening inside, and multiple adhesive strips on one side of the sealing film corresponding to the bag body, the adhesive strips being self-adhesive, and a break line on each side of the sealing film. The resealable plastic packaging bag has a sealing film sealing the bag opening, and the sealing film having multiple adhesive strips. By tearing open the sealing film and then tearing open the bag opening to remove the items inside the bag, the sealing film can be re-attached to the surface of the bag body, thus resealing the bag opening and allowing for better storage of the items inside the bag.
[0004] However, the above solutions cannot reinforce the bottom of the stand-up pouch. Usually, stand-up pouches are prone to instability when subjected to excessive heat sealing temperature or pressure. They are likely to tip over and fall off the shelf, which can damage them and affect the preservation of the contents inside. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a leak-proof, resealable stand-up pouch that makes the stand-up pouch body more stable, prevents internal liquid leakage caused by tilting of the stand-up pouch body, and thus protects the stand-up pouch body.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a leak-proof and resealable stand-up pouch, comprising a stand-up pouch body, wherein a first support plate is symmetrically fixedly installed at the bottom of the stand-up pouch body, a second support plate is rotatably connected to one side of the two first support plates, a connecting shaft passes through between the second support plate and the first support plate, bolt threads are symmetrically opened on both sides of the connecting shaft, and a fixing nut is symmetrically threaded on both sides of the bolt threads;
[0007] A handle is fixedly installed on the top of the self-standing packaging bag body, and a sealing component is provided on the top of the self-standing packaging bag body.
[0008] Preferably, a hook and loop fastener is fixedly installed on one side of the self-standing packaging bag body, a hook and loop fastener is movably connected to one side of the hook and loop fastener, a label is fixedly installed on one side of the hook and loop fastener, and a liquid unloading assembly is provided on the top of the self-standing packaging bag body.
[0009] Preferably, the sealing assembly includes a sealing bag, which is fixedly installed on the top of the stand-up pouch body, and a first seal is fixedly installed inside the sealing bag, with a locking block fixedly installed on one side of the first seal.
[0010] Preferably, a second seal is fixedly installed on the inner wall of the sealing bag, and a sealing groove is provided on one side of the second seal, the sealing groove and the locking block being movably connected.
[0011] Preferably, the liquid unloading assembly includes a liquid outlet pipe, which is fixedly installed on the top of the self-standing packaging bag body. The top of the liquid outlet pipe has a threaded groove, and a filter screen is fixedly installed inside the liquid outlet pipe.
[0012] Preferably, the internal thread of the threaded groove is connected to a sealing cap, one of the sealing gaskets is fixedly installed at the bottom of the sealing cap, and the other sealing gasket is located at the top of the liquid outlet pipe.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. This solution uses a first support plate, a second support plate, a connecting shaft, bolt threads, and fixing nuts to fix the first and second support plates. The first and second support plates can support the self-standing packaging bag body, making the self-standing packaging bag body more stable and preventing the self-standing packaging bag body from tilting and causing internal liquid leakage, thus protecting the self-standing packaging bag body.
[0015] 2. This solution incorporates a liquid discharge assembly, which facilitates the handling of liquid inside the stand-up pouch, controls the amount of liquid discharged, and prevents spillage, thereby improving the practicality of the stand-up pouch. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a partial schematic diagram of the front cross-section of the structure of this utility model;
[0018] Figure 3This is a schematic diagram of the liquid unloading assembly of this utility model;
[0019] Figure 4 This is a three-dimensional structural diagram of the anti-tipping mechanism of this utility model;
[0020] Figure 5 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.
[0021] In the diagram: 1. Stand-up pouch body; 2. First support plate; 3. Second support plate; 4. Connecting shaft; 5. Bolt thread; 6. Fixing nut; 7. Handle; 8. Sealing assembly; 81. Sealing bag; 82. First seal; 83. Locking block; 84. Second seal; 85. Sealing groove; 9. Hook and loop fastener; 10. Hook and loop fastener; 11. Label; 12. Liquid discharge assembly; 121. Liquid outlet pipe; 122. Threaded groove; 123. Filter screen; 124. Sealing cap; 125. Sealing gasket. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a leak-proof and resealable stand-up pouch, including a stand-up pouch body 1, a first support plate 2 symmetrically fixedly installed at the bottom of the stand-up pouch body 1, a second support plate 3 rotatably connected to one side of the two first support plates 2, a connecting shaft 4 passing through the second support plate 3 and the first support plate 2, bolt threads 5 symmetrically opened on both sides of the connecting shaft 4, and fixing nuts 6 symmetrically threaded on both sides of the bolt threads 5.
[0024] A handle 7 is fixedly installed on the top of the self-standing packaging bag body 1. A sealing component 8 is provided on the top of the self-standing packaging bag body 1. A hook and loop fastener 9 is fixedly installed on one side of the self-standing packaging bag body 1. A hook and loop fastener rough surface 10 is movably connected to one side of the hook and loop fastener 9. A label 11 is fixedly installed on one side of the hook and loop fastener rough surface 10. A liquid unloading component 12 is provided on the top of the self-standing packaging bag body 1.
[0025] The bolt thread 5 and the fixing nut 6 can fix the first support plate 2 and the second support plate 3. The first support plate 2 and the second support plate can support and place the self-standing packaging bag body 1, making the self-standing packaging bag body 1 more stable, preventing the self-standing packaging bag body 1 from tilting and causing internal liquid leakage, and facilitating the protection of the self-standing packaging bag body 1.
[0026] Please see Figure 1 , Figure 2 and Figure 5 The sealing assembly 8 includes a sealing bag 81, which is fixedly installed on the top of the stand-up pouch body 1. A first seal 82 is fixedly installed inside the sealing bag 81, and a locking block 83 is fixedly installed on one side of the first seal 82. A second seal 84 is fixedly installed on the inner wall of the sealing bag 81, and a sealing groove 85 is provided on one side of the second seal 84. The sealing groove 85 and the locking block 83 are movably connected.
[0027] The groove inside the first seal 82 engages with the locking block 83 inside the second seal 84. Since both the locking block 83 and the groove are made of elastic rubber, they provide excellent sealing and stability when locked together, effectively preventing internal air leakage.
[0028] Please see Figure 1 , Figure 2 and Figure 3 The liquid unloading assembly 12 includes a liquid outlet pipe 121, which is fixedly installed on the top of the self-standing packaging bag body 1. A threaded groove 122 is provided on the top of the liquid outlet pipe 121. A filter screen 123 is fixedly installed inside the liquid outlet pipe 121. A sealing cap 124 is threadedly connected inside the threaded groove 122. One sealing gasket 125 is fixedly installed at the bottom of the sealing cap 124, and the other sealing gasket 125 is located on the top of the liquid outlet pipe 121.
[0029] The liquid discharge assembly 12 facilitates the handling of liquid inside the stand-up pouch body 1, making it easy to control the amount of liquid poured out and preventing liquid spillage.
[0030] Working principle: When the self-standing packaging bag body 1 needs to be placed upright, open the self-standing packaging bag body 1, then adjust the first support plate 2 and the second support plate 3 to support them. Then rotate the fixing nut 6, which uses the bolt thread 5 to fix the second support plate 3, thereby fixing the second support plate 3 and the first support plate 2. Place the items to be stored inside the self-standing packaging bag body 1, then align the locking block 83 with the sealing groove 85, and simultaneously press the first seal 82 and the second seal 84 to release the lock. Block 83 is inserted into the sealing groove 85 to seal the stand-up pouch body 1. Then, the corresponding label 11 is placed on one side of the stand-up pouch body 1 and fixed with the hook and loop side 9 and the hook and loop side 10. When it is necessary to pour out the liquid inside the stand-up pouch body 1, rotate the sealing cap 124 to remove the sealing cap 124 from the inside of the threaded groove 122, and then pour it out with the liquid outlet pipe 121. The above is the working process of the whole device. All contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A leak-proof, resealable stand-up pouch, characterized in that: The self-standing packaging bag body (1) is symmetrically fixedly installed with a first support plate (2) at the bottom of the self-standing packaging bag body (1). A second support plate (3) is rotatably connected to one side of the two first support plates (2). A connecting shaft (4) passes through the second support plate (3) and the first support plate (2). Bolt threads (5) are symmetrically opened on both sides of the connecting shaft (4). Fixing nuts (6) are symmetrically threaded on both sides of the bolt threads (5). A handle (7) is fixedly installed on the top of the self-standing packaging bag body (1), and a sealing component (8) is provided on the top of the self-standing packaging bag body (1).
2. The leak-proof, resealable stand-up pouch according to claim 1, characterized in that: The self-standing packaging bag body (1) is fixedly installed with a hook and loop fastener (9) on one side, and a hook and loop fastener (10) is movably connected to one side of the hook and loop fastener (9). A label (11) is fixedly installed on one side of the hook and loop fastener (10), and a liquid unloading assembly (12) is provided on the top of the self-standing packaging bag body (1).
3. The leak-proof, resealable stand-up pouch according to claim 1, characterized in that: The sealing assembly (8) includes a sealing bag (81), which is fixedly installed on the top of the self-standing packaging bag body (1). A first seal (82) is fixedly installed inside the sealing bag (81), and a card block (83) is fixedly installed on one side of the first seal (82).
4. A leak-proof, resealable stand-up pouch according to claim 3, characterized in that: The inner wall of the sealing bag (81) is fixedly installed with a second seal (84), and a sealing groove (85) is provided on one side of the second seal (84). The sealing groove (85) and the card block (83) are movably connected.
5. A leak-proof, resealable stand-up pouch according to claim 2, characterized in that: The liquid unloading assembly (12) includes a liquid outlet pipe (121), which is fixedly installed on the top of the self-standing packaging bag body (1). A threaded groove (122) is provided on the top of the liquid outlet pipe (121), and a filter screen (123) is fixedly installed inside the liquid outlet pipe (121).
6. A leak-proof, resealable stand-up pouch according to claim 5, characterized in that: The internal thread of the threaded groove (122) is connected to a sealing cap (124), and one of the sealing gaskets (125) is fixedly installed at the bottom of the sealing cap (124), while the other sealing gasket (125) is located at the top of the liquid outlet pipe (121).
Citation Information
Patent Citations
Plastic packaging bag that can repeatedly seal
CN205256933U