A bag-in-box for liquid food
By introducing a filter plate and a buffer layer into the BIB bag, the problem of fruit pulp fibers affecting the taste is solved, achieving both juice filtration and protection of the BIB bag, thus improving ease of use.
Patent Information
- Application Number
- CN202522273655.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-28
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-28
AI Technical Summary
With existing BIB bags in juice packaging, fruit pulp fibers can easily mix into the liquid, affecting the taste for drinkers.
A box-in-bag design for liquid food includes an outer box, a BIB bag, a filter plate, and a cushioning layer. The filter plate blocks fruit pulp fibers, and the cushioning layer reduces impact and improves convenience.
It effectively blocks fruit pulp fibers, improves the taste for drinkers, and protects the BIB bag from impact damage.
Smart Images

Figure CN224676862U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of liquid packaging technology, specifically a box-in-bag for liquid food. Background Technology
[0002] A bag-in-a-box, also known as a BIB bag, is a liquid packaging container made of multi-layered composite film. It consists of a sealed tap, a flexible inner bag, and an outer cardboard box. It is mainly used for aseptic packaging of liquid products such as fruit juice, wine, edible oil, and medical reagents. The inner bag is often made of aluminum foil composite film or NY / PE co-extruded film, which has the characteristics of acid and alkali resistance, puncture resistance, and high-temperature sterilization. BIB bags are foldable, lightweight, and easy to store and transport, reducing material storage and transportation packaging costs.
[0003] However, when BIB bags are used in the field of juice packaging, during the production process, the juice liquid may contain small fruit pulp fibers. These small fruit pulp fibers are easily filled into the BIB bag as the juice liquid flows. Although the presence of these small fruit pulp fibers in the juice will not harm the health of the drinker, it will affect the taste of the pure juice. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a box-in-bag for liquid food, which has the advantages of blocking fruit pulp fibers inside the box-in-bag, avoiding the impact of fruit pulp fibers on the taste of the drinker, and improving the convenience of the box-in-bag, thus solving the problems mentioned in the background art.
[0005] This utility model provides the following technical solution: a box-in-bag for liquid food, comprising an outer box and a BIB bag, wherein the BIB bag is placed inside the outer box, a liquid outlet tube is threadedly connected to the lower end of the front side of the BIB bag, and the front end of the liquid outlet tube extends to the front of the outer box, a filter plate is fixedly sleeved on the inner wall of the connection between the rear end of the liquid outlet tube and the BIB bag, and a sealing head is threadedly connected to the front end of the liquid outlet tube, a round rod located to the right of the liquid outlet tube is fixedly installed on the front side of the outer box, a plurality of movable components are evenly distributed on the outer wall of the round rod, a support plate is fixedly installed at the end of the movable component away from the round rod, and a first anti-slip pad is fixedly connected to the outer side of the support plate.
[0006] Preferably, the BIB bag includes an outer bag body, a buffer layer, and an inner bag body, which are connected sequentially from the inside to the outside, and the buffer layer is disposed between the outer bag body and the inner bag body.
[0007] Preferably, the buffer layer includes an airbag, a vertical connecting tube, and a horizontal connecting tube. Two adjacent vertical airbags are connected by a vertical connecting tube, and two adjacent horizontal vertical connecting tubes are connected by a horizontal connecting tube. The airbags, vertical connecting tubes, and horizontal connecting tubes are internally interconnected.
[0008] Preferably, a mounting plate is fixedly installed at the rear end of the liquid outlet tube, and the outer wall of the mounting plate is fixedly sleeved with the front of the BIB bag. A first baffle located behind the sealing head is fixedly sleeved on the outer wall of the liquid outlet tube.
[0009] Preferably, a second baffle is fixedly installed at the rear end of the sealing head in front of the first baffle, a plug is fixedly connected to the inner wall of the sealing head, and the outer wall of the plug is sleeved with the inner wall of the front end of the liquid outlet pipe, and a number of anti-slip textures are evenly distributed on the outer wall of the sealing head.
[0010] Preferably, a side plate located in front of the support plate is fixedly installed at the front end of the filter plate, and a second anti-slip pad is fixedly installed at the end of the side plate away from the sealing head.
[0011] Preferably, the movable component includes a telescopic rod and a spring, the outer wall of the telescopic rod is movably sleeved with the spring, the inner ends of the telescopic rod and the spring are fixedly connected to the outer wall of the round rod, and the outer ends of the telescopic rod and the spring are fixedly connected to the inner side of the support plate.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. This utility model utilizes the cooperation between the BIB bag, outer box, connecting tube, filter plate and sealing head. By setting up the filter plate, it achieves the blocking effect on the pulp fiber in the juice before it enters the connecting tube. The method of separating the juice liquid and pulp fiber by the filter plate avoids the influence of the presence of pulp fiber on the taste of the juice when drinking it.
[0014] 2. This utility model achieves the function of protecting the BIB bag from impact by coordinating the BIB bag, buffer layer, inner bag body, and outer bag body and utilizing the buffer layer. The buffer layer is composed of an air bladder, a vertical connecting tube, and a horizontal connecting tube, which allows the gas in the buffer layer to flow inside the air bladder, the vertical connecting tube, and the horizontal connecting tube, reducing the impact force after the BIB bag is hit, thereby achieving the protective effect of the BIB bag. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This utility model Figure 1 The front view;
[0017] Figure 3 This is a schematic diagram of the outer box of this utility model;
[0018] Figure 4 This is a cross-sectional view of the liquid outlet pipe of this utility model;
[0019] Figure 5 This is a schematic diagram of the internal structure of the sealing head of this utility model;
[0020] Figure 6 This is a schematic diagram of the structure of the inner bag of this utility model;
[0021] Figure 7 This utility model Figure 6 A magnified view of point A;
[0022] Figure 8 This is a schematic diagram of the structure of this utility model.
[0023] In the diagram: 1. Outer box; 2. BIB bag; 201. Outer bag body; 202. Buffer layer; 2021. Airbag; 2022. Vertical connecting pipe; 2023. Horizontal connecting pipe; 203. Inner bag body; 3. Liquid outlet pipe; 4. Filter plate; 5. Sealing head; 6. Round rod; 7. Movable component; 701. Telescopic rod; 702. Spring; 8. Support plate; 9. First anti-slip pad; 10. Mounting plate; 11. First baffle; 12. Second baffle; 13. Plug; 14. Anti-slip texture; 15. Side plate; 16. Second anti-slip pad. 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] Please see Figure 1 , Figure 3 , Figure 4 and Figure 6A type of bag-in-box for liquid food includes an outer box 1 and a BIB bag 2. The BIB bag 2 is placed inside the outer box 1. A liquid outlet tube 3 is threadedly connected to the lower end of the front of the BIB bag 2, and the front end of the liquid outlet tube 3 extends to the front of the outer box 1. Since the filling port of the BIB bag 2 and the liquid outlet tube 3 are connected by a threaded connection, the liquid outlet tube 3 is installed into the filling port of the BIB bag 2 by rotation. A filter plate 4 is fixedly sleeved on the inner wall of the connection between the rear end of the liquid outlet tube 3 and the BIB bag 2. A sealing head 5 is threadedly connected to the front end of the liquid outlet tube 3. A round rod 6 located to the right of the liquid outlet tube 3 is fixedly installed on the front of the outer box 1. Several movable components 7 are evenly distributed on the outer wall of the round rod 6. A support plate 8 is fixedly installed on the end of the movable component 7 away from the round rod 6. A first anti-slip pad 9 is fixedly connected to the outer side of the support plate 8.
[0026] BIB bag 2 includes an outer bag body 201, a buffer layer 202, and an inner bag body 203. Due to the flow of gas inside the airbag 2021, the vertical connecting tube 2022, and the horizontal connecting tube 2023, and because the airbag 2021, the vertical connecting tube 2022, and the horizontal connecting tube 2023 have a certain degree of elasticity, the buffer layer 202 has a certain buffering effect when the BIB bag 2 is impacted. The outer bag body 201, the buffer layer 202, and the inner bag body 203 are connected sequentially from the inside to the outside, and the buffer layer 202 is disposed between the outer bag body 201 and the inner bag body 203.
[0027] Please see Figure 2 , Figure 5 and Figure 7 The buffer layer 202 includes an airbag 2021, a vertical connecting pipe 2022, and a horizontal connecting pipe 2023. Two adjacent vertical airbags 2021 are connected by the vertical connecting pipe 2022, and two adjacent horizontal vertical connecting pipes 2022 are connected by the horizontal connecting pipe 2023. The airbags 2021, the vertical connecting pipes 2022, and the horizontal connecting pipes 2023 are internally connected.
[0028] An installation plate 10 is fixedly installed at the rear end of the liquid outlet pipe 3, and the outer wall of the installation plate 10 is fixedly sleeved with the front of the BIB bag 2. A first baffle 11 located behind the sealing head 5 is fixedly sleeved on the outer wall of the liquid outlet pipe 3.
[0029] A second baffle 12 located in front of the first baffle 11 is fixedly installed at the rear end of the sealing head 5. A plug 13 is fixedly connected to the inner wall of the sealing head 5, and the outer wall of the plug 13 is sleeved with the inner wall of the front end of the liquid outlet pipe 3. Since the sealing head 5 and the front end of the liquid outlet pipe 3 are connected by threads, the sealing head 5 is removed from the liquid outlet pipe 3 by rotating. When the sealing head 5 is removed from the liquid outlet pipe 3, the plug 13 is pulled out from the front end of the liquid outlet pipe 3. The liquid in the BIB bag 2 flows into the interior of the liquid outlet pipe 3 after passing through the filter plate 4 and is discharged. At this time, the filter plate 4 is set to block the fruit pulp fibers in the BIB bag 2. Several anti-slip textures 14 are evenly distributed on the outer wall of the sealing head 5. The anti-slip textures 14 increase the friction between the drinker's hand and the contact surface of the sealing head 5.
[0030] Please see Figure 8 , Figure 5 and Figure 4 A side plate 15 located in front of the support plate 8 is fixedly installed at the front end of the filter plate 4, and a second anti-slip pad 16 is fixedly installed at the end of the side plate 15 away from the sealing head 5.
[0031] The movable component 7 includes a telescopic rod 701 and a spring 702. The compression of the spring 702 drives the movement of the telescopic rod 701. The movement of the telescopic rod 701 drives the support plate 8 to move simultaneously, so that the support plate 8 comes into contact with the inner wall of the sealing head 5. At this time, the first anti-slip pad 9 increases the friction between the support plate 8 and the inner wall of the sealing head 5. Furthermore, the second anti-slip pad 16 on the side plate 15 increases the friction between the side plate 15 and the inner wall of the sealing head 5, thereby strengthening the stability of the sealing head 5 placed on the round rod 6. The spring 702 is movably sleeved on the outer wall of the telescopic rod 701. The inner ends of the telescopic rod 701 and the spring 702 are fixedly connected to the outer wall of the round rod 6, and the outer ends of the telescopic rod 701 and the spring 702 are fixedly connected to the inner side of the support plate 8.
[0032] Working principle: In use, firstly, because the bottom of the BIB bag 2 has a filling port, liquid is filled into the BIB bag 2 through the filling port. Since the filling port of the BIB bag 2 and the outlet pipe 3 are connected by a threaded connection, the outlet pipe 3 is rotated into the filling port of the BIB bag 2. Then, the BIB bag 2 is placed inside the outer box 1, and the outlet pipe 3 is passed through the through hole on the front of the outer box 1. Next, because the sealing head 5 is connected to the front end of the outlet pipe 3 by a threaded connection, the sealing head 5 is rotated off the outlet pipe 3. When the sealing head 5 is removed from the outlet pipe 3, the plug 13 is pulled out from the front end of the outlet pipe 3. The liquid inside the BIB bag 2 flows through the filter plate 4 and then into the outlet pipe 3 before being discharged. At this time, the filter plate 4 acts as a barrier against the fruit pulp fibers inside the BIB bag 2. Subsequently, to prevent the sealing... After the sealing head 5 is removed, it is pushed from the front end of the support plate 8 to the outside of the round rod 6. The compression of the spring 702 drives the movement of the telescopic rod 701. The movement of the telescopic rod 701 drives the support plate 8 to move simultaneously, so that the support plate 8 acts as a contact point against the inner wall of the sealing head 5. At this time, the setting of the first anti-slip pad 9 increases the friction between the contact surface between the support plate 8 and the inner wall of the sealing head 5. In addition, the setting of the second anti-slip pad 16 on the side plate 15 increases the friction between the contact surface between the side plate 15 and the inner wall of the sealing head 5, thereby strengthening the stability of the sealing head 5 placed on the round rod 6. Finally, due to the flow of gas inside the airbag 2021, the vertical connecting pipe 2022 and the horizontal connecting pipe 2023, and the fact that the airbag 2021, the vertical connecting pipe 2022 and the horizontal connecting pipe 2023 have a certain degree of elasticity, so that the buffer layer 202 has a certain buffering effect when the BIB bag 2 is impacted.
[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used merely 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 a process, method, article, or apparatus. Additionally, in the accompanying drawings of this utility model, the fill patterns are merely for distinguishing layers and do not constitute any other limitation.
[0034] 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 bag-in-box for liquid food, comprising an outer box (1) and a BIB bag (2), characterized in that: The BIB bag (2) is placed inside the outer box (1). The lower end of the front of the BIB bag (2) is threaded with a liquid outlet pipe (3), and the front end of the liquid outlet pipe (3) extends to the front of the outer box (1). A filter plate (4) is fixedly sleeved on the inner wall of the connection between the rear end of the liquid outlet pipe (3) and the BIB bag (2). A sealing head (5) is threadedly connected to the front end of the liquid outlet pipe (3). A round rod (6) located to the right of the liquid outlet pipe (3) is fixedly installed on the front of the outer box (1). Several movable components (7) are evenly distributed on the outer wall of the round rod (6). A support plate (8) is fixedly installed on the end of the movable component (7) away from the round rod (6). A first anti-slip pad (9) is fixedly connected to the outer side of the support plate (8).
2. The box bag for liquid food according to claim 1, characterized in that: The BIB bag (2) includes an outer bag body (201), a buffer layer (202) and an inner bag body (203). The outer bag body (201), the buffer layer (202) and the inner bag body (203) are connected sequentially from the inside to the outside, and the buffer layer (202) is disposed between the outer bag body (201) and the inner bag body (203).
3. A bag for liquid food as described in claim 2, characterized in that: The buffer layer (202) includes an airbag (2021), a vertical connecting tube (2022), and a horizontal connecting tube (2023). Two adjacent vertical airbags (2021) are connected by a vertical connecting tube (2022), and two adjacent horizontal vertical connecting tubes (2022) are connected by a horizontal connecting tube (2023). The airbags (2021), vertical connecting tubes (2022), and horizontal connecting tubes (2023) are internally connected.
4. A bag for liquid food as described in claim 1, characterized in that: The rear end of the liquid outlet pipe (3) is fixedly installed with an installation plate (10), and the outer wall of the installation plate (10) is fixedly sleeved with the front of the BIB bag (2). The outer wall of the liquid outlet pipe (3) is fixedly sleeved with a first baffle (11) located behind the sealing head (5).
5. A bag for liquid food as described in claim 4, characterized in that: The rear end of the sealing head (5) is fixedly installed with a second baffle (12) located in front of the first baffle (11). The inner wall of the sealing head (5) is fixedly connected with a plug (13), and the outer wall of the plug (13) is sleeved with the inner wall of the front end of the liquid outlet pipe (3). The outer wall of the sealing head (5) is evenly distributed with several anti-slip textures (14).
6. A bag for liquid food as described in claim 1, characterized in that: The filter plate (4) is fixedly installed with a side plate (15) located in front of the support plate (8), and a second anti-slip pad (16) is fixedly installed at the end of the side plate (15) away from the sealing head (5).
7. A bag for liquid food as described in claim 1, characterized in that: The movable component (7) includes a telescopic rod (701) and a spring (702). The outer wall of the telescopic rod (701) is movably sleeved with the spring (702). The inner ends of the telescopic rod (701) and the spring (702) are fixedly connected to the outer wall of the round rod (6). The outer ends of the telescopic rod (701) and the spring (702) are fixedly connected to the inner side of the support plate (8).