Aseptic liquid packaging bag

Abstract

This utility model relates to the field of liquid packaging bag technology and discloses a sterile liquid packaging bag, including an outer bag layer with a nozzle installed on the upper front side; a food-grade polyethylene layer laid inside a foil layer; first sealing edges on both the left and right sides of the outer bag layer; and second sealing edges connected to the upper and lower outer sides of the outer bag layer; connectors installed on the left and right sides of the front and rear of the second sealing edges; hanging rings connected to the outer ends of the springs; and hooks hanging inside the hanging rings; and an elastic cord connected to the inner end of the hooks. This sterile liquid packaging bag, by attaching the hooks to the outside of the hanging rings, connects the elastic cord and the elastic lining, allowing the elastic cord to provide support in the vertical direction. When the bag is filled with liquid, the elastic cord shares the weight of the liquid, reducing sagging deformation caused by gravity.

Description

Technical Field

[0001] This utility model relates to the field of liquid packaging bag technology, specifically to a sterile liquid packaging bag. Background Technology

[0002] With consumers' increasing demands for food safety and quality, and the rapid development of the food industry, the market demand for aseptic liquid packaging bags continues to grow. Aseptic liquid packaging bags can extend the shelf life of liquid foods without the addition of preservatives or refrigeration, meeting consumers' needs for convenient and healthy foods. At the same time, their excellent barrier properties and stability have led to their widespread application in various fields such as fruit juices, dairy products, alcoholic beverages, edible oils, soy sauce and other condiments, as well as chemical products.

[0003] Common liquid packaging bags are made by adding a composite food-grade polyethylene material inside the bag body for aseptic packaging and then processing it through aseptic treatment (high temperature or ultraviolet irradiation). However, because the bag body expands after being filled with liquid, it is prone to sagging and deformation due to gravity. Moreover, it lacks an effective support structure when subjected to external impact or compression, making it very easy to break or leak. This method cannot meet the working requirements of liquid packaging bags. Therefore, an aseptic liquid packaging bag is proposed. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a sterile liquid packaging bag to solve the technical problem that the bag body becomes expanded after being filled with liquid, making it prone to rupture or leakage when subjected to external impact or compression.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sterile liquid packaging bag, comprising:

[0008] The outer layer of the bag has a tube opening on the upper front side, a valve cap inserted inside the tube opening, and a tin foil layer laid on the inner side of the outer layer of the bag.

[0009] A food-grade polyethylene layer is laid inside the foil layer. The outer left and right sides of the outer layer of the bag are equipped with first sealing edges, and the upper and lower sides of the outer layer of the bag are connected with second sealing edges.

[0010] The connector is installed on the left and right sides of the front and rear of the second sealing edge. The connector is connected to a spring inside. The outer end of the spring is connected to a hanging ring. The hanging ring is equipped with a hook inside.

[0011] An elastic cord is connected to the inner end of the hook. Both the upper and lower sides of the elastic cord are fitted with loops, and the inner side of each loop is fitted with an elastic lining.

[0012] Preferably, the outer corners of the hook are rounded, and the lower inner part of the hook is connected to a limit plate by a torsion spring, which facilitates the hook being hung on the outside of the hanging ring.

[0013] Preferably, the inside of the first sealing edge is provided with a through groove at the position corresponding to the elastic pocket fabric, and the length of the elastic pocket fabric is greater than the width of the outer layer of the bag, which facilitates protection.

[0014] Preferably, the elastic pocket is connected to both the left and right sides with elastic straps, the elastic straps all penetrate the interior of the through groove, and the width of the elastic straps is smaller than the width of the elastic pocket.

[0015] Preferably, buttons are sewn on both sides of the inner side of the rear elastic band, and buckle grooves are opened in the inner side of the front elastic band at positions corresponding to the buttons. The connection between the two elastic bands can be completed by combining the buttons and buckle grooves on the inner side of the elastic band, so that the bag can be supported and protected in a circumferential manner.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a sterile liquid packaging bag, which has the following beneficial effects:

[0018] This aseptic liquid packaging bag, with its added foil layer, blocks light, oxygen, and moisture, preventing these factors from affecting the liquid inside the bag. Simultaneously, the added food-grade polyethylene layer ensures aseptic packaging of the liquid. By attaching hooks to the outside of the hanging rings, the elastic cord and elastic pocket are connected. The elastic cord provides vertical support, and when the bag is filled with liquid, the elastic cord stretches under pressure, generating a rebound force that shares the weight of the liquid and reduces sagging caused by gravity. Furthermore, the elastic pocket, added laterally outside the elastic cord, forms a mesh structure, further enhancing the overall support capacity. It supports the bag from multiple directions, preventing rupture or leakage under impact or pressure, thus improving the safety and quality of the aseptic liquid packaging bag during use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the outer layer, tin foil layer, and food-grade polyethylene layer of the bag of this utility model;

[0021] Figure 3 This is a schematic diagram of the spring and hook structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the elastic lining structure of this utility model.

[0023] In the diagram: 1. Outer layer of bag; 2. Pipe opening; 21. Valve cap; 3. Foil layer; 4. Food-grade polyethylene layer; 5. First seal; 6. Second seal; 7. Connector; 8. Spring; 9. Hanging ring; 10. Hook; 11. Limiting lever; 12. Elastic cord; 13. Loop; 14. Elastic pocket; 15. Through groove; 16. Telescopic belt; 17. Button; 18. Fastening groove. Detailed Implementation

[0024] 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.

[0025] This utility model provides a technical solution: a sterile liquid packaging bag, comprising an outer layer 1, a nozzle 2, a valve cap 21, a foil layer 3, a food-grade polyethylene layer 4, a first sealing edge 5, a second sealing edge 6, a connector 7, a spring 8, a hanging ring 9, a hook 10, a limiting lever 11, an elastic cord 12, a collar 13, an elastic lining 14, a through groove 15, a telescopic belt 16, a button 17, and a buckle groove 18.

[0026] Please see Figure 1 The upper front part of the outer layer 1 of the bag is equipped with a pipe opening 2, and a valve cap 21 is inserted inside the pipe opening 2. Please refer to [link / reference]. Figure 2 The inner side of the outer layer 1 of the bag is covered with a layer of tin foil 3;

[0027] Food-grade polyethylene layer 4 is laid inside the foil layer 3. Please refer to [link / reference]. Figure 1 The outer left and right sides of the outer layer 1 of the bag are equipped with first sealing edges 5, and the upper and lower sides of the outer layer 1 of the bag are connected with second sealing edges 6.

[0028] Please see Figure 3 Connector 7 is installed on the left and right sides of the front and rear of the second sealing edge 6. A spring 8 is connected inside the connector 7. A hanging ring 9 is connected to the outer end of the spring 8. A hook 10 is hung inside the hanging ring 9.

[0029] Elastic cord 12 is attached to the inner end of hook 10. Please refer to [link / reference]. Figure 4The elastic cord 12 has loops 13 on both the top and bottom sides, and elastic pockets 14 are installed on the inside of each loop 13. Please refer to [link / reference]. Figure 3 The hooks 10 have rounded corners on the outside. The lower inner part of the hooks 10 is connected to the limit lever 11 by a torsion spring. The inside of the first sealing edge 5 has through grooves 15 at positions corresponding to the elastic pocket 14. The length of the elastic pocket 14 is greater than the width of the outer layer 1 of the bag. The added tin foil layer 3 can block light, oxygen and moisture, preventing these factors from affecting the liquid inside the bag. At the same time, the added food-grade polyethylene layer 4 can achieve aseptic bagging of liquid. By hanging the hooks 10 on the outside of the hanging ring 9, the elastic rope 12 and the elastic pocket 14 can be connected. The connection allows the elastic cord 12 to provide support in the vertical direction. When the packaging bag is filled with liquid, the elastic cord 12 will stretch under the force and generate a rebound force, which will share the weight of the liquid on the bag and reduce the sagging deformation of the bag due to gravity. At the same time, since the elastic cloth 14 is added laterally to the outside of the elastic cord 12, it can form a net structure, which further enhances the overall support capacity. It can support the bag from multiple directions and prevent the bag from breaking or leaking when it is subjected to external impact or compression, thus improving the safety and quality of the sterile liquid packaging bag during use.

[0030] Please see Figure 4 The elastic pocket 14 is connected to both the left and right sides with elastic straps 16. The elastic straps 16 pass through the inside of the through groove 15. The width of the elastic straps 16 is smaller than the width of the elastic pocket 14. Buttons 17 are sewn on both sides of the inside of the rear elastic strap 16. Button slots 18 are opened in the inside of the front elastic strap 16 at the positions corresponding to the buttons 17.

[0031] This solution uses an added foil layer 3 to block light, oxygen, and moisture, preventing these factors from affecting the liquid inside the bag. Simultaneously, the added food-grade polyethylene layer 4 achieves aseptic packaging of the liquid. By attaching the hook 10 to the outside of the hanging ring 9, the elastic cord 12 and the elastic lining 14 are connected. The elastic cord 12 provides vertical support, causing it to stretch and rebound when the bag is filled with liquid, sharing the weight of the liquid and reducing sagging due to gravity. The elastic lining 14, added laterally to the outside of the elastic cord 12, forms a mesh structure, further enhancing the overall support capacity. This provides support from multiple directions, preventing the bag from breaking or leaking under impact or pressure, thus improving the safety and quality of the aseptic liquid packaging bag during use.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] 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 sterile liquid packaging bag, characterized in that, include: The outer layer of the bag (1) is provided with a pipe opening (2) on the upper front side of the outer layer of the bag (1), and a valve cap (21) is inserted inside the pipe opening (2). A tin foil layer (3) is laid on the inner side of the outer layer of the bag (1). A food-grade polyethylene layer (4) is laid on the inside of the foil layer (3). The outer left and right sides of the outer layer (1) of the bag are equipped with first sealing edges (5), and the upper and lower sides of the outer layer (1) of the bag are connected with second sealing edges (6). Connector (7) is installed on the left and right sides of the front and rear of the second sealing edge (6). A spring (8) is connected inside the connector (7). A hanging ring (9) is connected to the outer end of the spring (8). A hook (10) is hung inside the hanging ring (9). Elastic rope (12) is connected to the inner end of hook (10). The upper and lower sides of the elastic rope (12) are fitted with collars (13), and the inner side of the collars (13) is fitted with elastic pockets (14).

2. The aseptic liquid packaging bag according to claim 1, characterized in that: The hook (10) has rounded corners on the outside, and the lower inner side of the hook (10) is connected to a limit switch (11) by a torsion spring.

3. The aseptic liquid packaging bag according to claim 1, characterized in that: The first sealing edge (5) has a through groove (15) at the position corresponding to the elastic pocket (14) inside, and the length of the elastic pocket (14) is greater than the width of the outer layer (1) of the bag.

4. The aseptic liquid packaging bag according to claim 3, characterized in that: The elastic pocket (14) is connected to both the left and right sides by a telescopic strap (16), which penetrates the inside of the through groove (15). The width of the telescopic strap (16) is smaller than the width of the elastic pocket (14).

5. A sterile liquid packaging bag according to claim 4, characterized in that: Buttons (17) are sewn on both sides of the interior of the rear telescopic belt (16), and buckle grooves (18) are opened in the interior of the front telescopic belt (16) at positions corresponding to the buttons (17).

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