Moisture-proof and oxygen-resistant container bag with gradient barrier layer
By designing a closed moisture-proof mechanism and a gradient barrier layer on the FIBC (Flexible Intermediate Bulk Container) bag, the problem of material moisture absorption during traditional FIBC storage is solved, achieving both sealed protection and enhanced strength.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU DAWEN PACKAGING MATERIAL CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional FIBCs (Flexible Intermediate Bulk Containers) are prone to moisture absorption when storing materials, which can affect the safety of the materials.
The design incorporates a closed moisture-proof mechanism for container bags, including a closed moisture-proof component and a reinforcement component. Through the sealing structure of the rubber sleeve and cover, combined with an oxygen barrier layer and a water barrier layer, a gradient barrier layer is formed to prevent the intrusion of humid air.
It achieves effective sealing of materials, prevents the intrusion of humid air, improves the safety of material storage, and enhances the overall strength of the container bag through reinforced components.
Smart Images

Figure CN224118027U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of container bag technology, specifically to a moisture-proof and oxygen-barrier container bag with a gradient barrier layer. Background Technology
[0002] FIBCs (Flexible Intermediate Bulk Containers) are large packaging containers made of durable materials such as polypropylene or polyethylene. They are typically cubic or cylindrical, with a capacity between 0.5 and 3 cubic meters and a load-bearing capacity of 1 to 3 tons. They feature a loading port at the top, a unloading port at the bottom, and lifting straps or rings on the sides for easy mechanical handling. Widely used for the transportation and storage of bulk materials such as chemicals, grains, and minerals, they offer advantages such as moisture protection, dust protection, and foldability for recycling, making them a highly efficient logistics packaging solution to replace traditional sacks and rigid containers.
[0003] Traditional container bags have an open top design, which allows humid air from the environment to easily penetrate the material during storage, increasing its moisture content and affecting its safety during storage. Utility Model Content
[0004] The purpose of this invention is to provide a moisture-proof and oxygen-barrier container bag with a gradient barrier layer, which solves the problem that materials are easily affected by moisture during storage in open-design container bags in the prior art.
[0005] This utility model provides the following technical solution: a moisture-proof and oxygen-barrier container bag with a gradient barrier layer, comprising:
[0006] FIBCs (Flexible Intermediate Bulk Containers);
[0007] A sealing and moisture-proof mechanism is installed on the container bag. The sealing and moisture-proof mechanism is used to seal the opening of the container bag and reinforce the container bag at the same time.
[0008] The closed moisture-proof mechanism includes a closed moisture-proof component and a reinforcing component. The closed moisture-proof component includes a kit, which is fixedly connected to the outer wall of the container bag near the top. A rubber sleeve is fixedly fitted onto the outer wall of the kit. A cover plate is movably inserted into the top of the kit. A nylon handle is fixedly connected to the top of the cover plate. A notch is opened at the bottom of the cover plate, and a pin groove is opened on the inner wall of the notch.
[0009] As a preferred embodiment of the above technical solution, a fitting block is fixedly installed on the outer wall of the kit, a sliding pin block is slidably connected to the inner wall of the fitting block, an elastic element is fixedly connected to the inner wall of the fitting block, and the end of the elastic element away from the fitting block is fixedly connected to the side of the sliding pin block.
[0010] As a preferred embodiment of the above technical solution, a push rod is fixedly connected to the outer wall of the sliding pin block, and a sling is fixedly connected to the side of the kit.
[0011] As a preferred embodiment of the above technical solution, the reinforcing component includes a first surrounding strip and a second surrounding strip. The first surrounding strip is fixedly connected to the outer wall of the container bag, and the second surrounding strip is fixedly connected to the outer wall of the container bag near the bottom. The top and bottom of the first surrounding strip are both fixedly connected to connecting straps. The top of the upper connecting strap is fixedly connected to the bottom of the kit, and the bottom of the lower connecting strap is fixedly connected to the top of the second surrounding strip.
[0012] As a preferred embodiment of the above technical solution, a bottom support strip is fixedly connected to the bottom of the second surrounding strip, and a bottom support fork strip is fixedly connected to the bottom of the second surrounding strip, with the end of the bottom support fork strip fixedly connected to the outer wall of the bottom support strip.
[0013] As a preferred embodiment of the above technical solution, the container bag includes an outer layer, an oxygen barrier layer fixedly connected to the inner wall of the outer layer, a water barrier layer fixedly connected to the inner wall of the oxygen barrier layer, and an inner layer fixedly connected to the inner wall of the water barrier layer.
[0014] As a preferred embodiment of the above technical solution, a connecting hopper is fixedly connected to the center of the bottom of the container bag, and a discharge gate valve is fixedly connected to the bottom of the connecting hopper.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] This utility model, through the overall design of a closed moisture-proof mechanism, allows users to insert a cover plate into the top of the kit after storing materials in a container bag. The rubber sleeve design seals the connection, thus providing a sealed protection for the materials and preventing moisture in the air from damaging them, thereby increasing the safety of the materials during storage. At the same time, through the cooperation of the kit, connecting straps, first surrounding strip, second surrounding strip, bottom support strip, and bottom support fork strip, a frame structure can be formed on the outer wall of the container bag, improving the overall strength of the container bag. Attached Figure Description
[0017] Figure 1 This is a perspective view of the present utility model;
[0018] Figure 2 This is a structural schematic diagram of the kit and the second frame component of this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the kit and cover plate of this utility model;
[0020] Figure 4 for Figure 3 Enlarged structural diagram at point A;
[0021] Figure 5 This is a schematic diagram of the bottom structure of the container bag of this utility model;
[0022] Figure 6 This is a partial cross-sectional structural diagram of the container bag of this utility model.
[0023] In the diagram: 1. Container bag; 11. Outer layer; 12. Oxygen barrier layer; 13. Water barrier layer; 14. Inner layer; 101. Connecting hopper; 102. Discharge gate valve; 2. Sealing and moisture-proof mechanism; 21. Kit; 211. Cover plate; 212. Nylon handle; 213. Notch; 214. Pin groove; 215. Fitting block; 216. Sliding pin block; 217. Elastic element; 218. Push rod; 22. Rubber sleeve; 23. Lifting strap; 24. Connecting strap; 25. No. 1 surrounding strip; 26. No. 2 surrounding strip; 27. Bottom support strip; 28. Bottom support fork strip. Detailed Implementation
[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0025] like Figures 1-6 As shown, this utility model provides a technical solution: a moisture-proof and oxygen-barrier container bag with a gradient barrier layer, comprising:
[0026] FIBC 1;
[0027] A sealing and moisture-proof mechanism 2 is installed on the container bag 1. The sealing and moisture-proof mechanism 2 is used to seal the opening of the container bag 1 and reinforce the container bag 1.
[0028] The sealed moisture-proof mechanism 2 includes a sealed moisture-proof component and a reinforcing component. The sealed moisture-proof component includes a kit 21, which is fixedly connected to the outer wall of the container bag 1 near the top. A rubber sleeve 22 is fixedly fitted onto the outer wall of the kit 21. A cover plate 211 is movably inserted into the top of the kit 21. A nylon handle 212 is fixedly connected to the top of the cover plate 211. A notch 213 is opened at the bottom of the cover plate 211, and a pin groove 214 is opened on the inner wall of the notch 213. After storing materials with the container bag 1, the user can insert the cover plate 211 into the top of the kit 21. At this time, the rubber sleeve 22 can seal the connection, thus achieving the function of sealing and protecting the materials.
[0029] As one implementation method in this embodiment, such as Figure 3 , Figure 4As shown, a fitting block 215 is fixedly installed on the outer wall of the kit 21, a sliding pin 216 is slidably connected to the inner wall of the fitting block 215, and an elastic element 217 is fixedly connected to the inner wall of the fitting block 215. The end of the elastic element 217 away from the fitting block 215 is fixedly connected to the side of the sliding pin 216. When the cover plate 211 is inserted into the top of the kit 21, the sliding pin 216 is pushed in advance to cause the sliding pin 216 to fully retract into the inner cavity of the fitting block 215. After the insertion is completed, the sliding pin 216 is released. Through the restoring force of the elastic element 217, the sliding pin 216 can be driven to insert into the inside of the pin groove 214, locking the cover plate 211 on the top of the kit 21.
[0030] As one implementation method in this embodiment, such as Figure 3 , Figure 4 As shown, a push rod 218 is fixedly connected to the outer wall of the sliding pin block 216, and a sling 23 is fixedly connected to the side of the kit 21. Through the design of the push rod 218, the user can push two adjacent push rods 218 in opposite directions to complete the retraction of the sliding pin block 216, which is convenient for the user. The user can connect the hoisting device to the sling 23 and then hoist the entire structure.
[0031] As one implementation method in this embodiment, such as Figure 2 As shown, the reinforcing components include a first surrounding strip 25 and a second surrounding strip 26. The first surrounding strip 25 is fixedly connected to the outer wall of the container bag 1, and the second surrounding strip 26 is fixedly connected to the outer wall of the container bag 1 near the bottom. Connecting straps 24 are fixedly connected to the top and bottom of the first surrounding strip 25. The top of the upper connecting strap 24 is fixedly connected to the bottom of the kit 21, and the bottom of the lower connecting strap 24 is fixedly connected to the top of the second surrounding strip 26. Through the design of the connecting straps 24, the first surrounding strip 25, the second surrounding strip 26, the bottom support strip 27, and the bottom support branch strip 28, in conjunction with the kit 21, a frame structure can be formed on the outer wall of the container bag 1, improving the overall strength of the container bag 1. The kit 21 is made of alloy, and the connecting straps 24, the first surrounding strip 25, the second surrounding strip 26, the bottom support strip 27, and the bottom support branch strip 28 are made of high-strength synthetic fiber materials such as nylon.
[0032] As one implementation method in this embodiment, such as Figure 2 As shown, a bottom support strip 27 is fixedly connected to the bottom of the second surrounding strip 26, and a bottom support fork strip 28 is fixedly connected to the bottom of the second surrounding strip 26. The end of the bottom support fork strip 28 is fixedly connected to the outer wall of the bottom support strip 27. The bottom support strip 27 and the bottom support fork strip 28 are used to reinforce the bottom of the container bag 1. The shape design of the bottom support fork strip 28 facilitates the subsequent material discharge work of the container bag 1.
[0033] As one implementation method in this embodiment, such as Figure 6 As shown, the container bag 1 includes an outer layer 11, an oxygen barrier layer 12 fixedly connected to the inner wall of the outer layer 11, a water barrier layer 13 fixedly connected to the inner wall of the oxygen barrier layer 12, and an inner layer 14 fixedly connected to the inner wall of the water barrier layer 13. The outer layer 11 is made of high-strength polyester material, which has wear resistance and puncture resistance. The oxygen barrier layer 12 and the water barrier layer 13 serve as gradient barrier layers. The oxygen barrier layer 12 is made of polyvinylidene chloride, which has low oxygen permeability and can inhibit oxidation reaction. The water barrier layer 13 is made of aluminum foil, which has strong water vapor barrier properties and excellent moisture-proof performance. The inner layer 14 is made of polyethylene, which ensures airtightness and directly contacts the contents. This design can fully guarantee the safety of materials during storage.
[0034] As one implementation method in this embodiment, such as Figure 5 As shown, a connecting hopper 101 is fixedly connected to the center of the bottom of the container bag 1, and a discharge gate valve 102 is fixedly connected to the bottom of the connecting hopper 101. After the container bag 1 is lifted, the discharge gate valve 102 is opened to discharge the material inside the container bag 1.
[0035] Working principle: When in use, fill the material through the opening at the top of the container bag 1. If the material needs to be sealed, push the two adjacent push rods 218 in opposite directions, then insert the cover plate 211 into the top of the kit 21. Then release the push rods 218. Through the reset force of the elastic element 217, the sliding pin block 216 can be driven to insert into the inside of the pin groove 214, locking the cover plate 211 in the top of the kit 21. At this time, the rubber sleeve 22 can seal the connection, thus achieving the function of sealing and protecting the material. The user can connect the lifting device to the lifting strap 23 and then lift the entire structure.
[0036] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.
Claims
1. A moisture-proof and oxygen-barrier container bag with a gradient barrier layer, characterized in that, include: FIBC (1); A sealing and moisture-proof mechanism (2) is provided on the container bag (1). The sealing and moisture-proof mechanism (2) is used to seal the opening of the container bag (1) and reinforce the container bag (1). The closed moisture-proof mechanism (2) includes a closed moisture-proof component and a reinforcing component. The closed moisture-proof component includes a kit (21). The kit (21) is fixedly connected to the outer wall of the container bag (1) near the top. A rubber sleeve (22) is fixedly fitted onto the outer wall of the kit (21). A cover plate (211) is movably inserted into the top of the kit (21). A nylon handle (212) is fixedly connected to the top of the cover plate (211). A notch (213) is opened at the bottom of the cover plate (211). A pin groove (214) is opened on the inner wall of the notch (213).
2. The moisture-proof and oxygen-barrier container bag with a gradient barrier layer according to claim 1, characterized in that: A fitting block (215) is fixedly installed on the outer wall of the kit (21). A sliding pin block (216) is slidably connected to the inner wall of the fitting block (215). An elastic element (217) is fixedly connected to the inner wall of the fitting block (215). One end of the elastic element (217) away from the fitting block (215) is fixedly connected to the side of the sliding pin block (216).
3. A moisture-proof and oxygen-barrier container bag with a gradient barrier layer according to claim 2, characterized in that: A push rod (218) is fixedly connected to the outer wall of the sliding pin block (216), and a sling (23) is fixedly connected to the side of the kit (21).
4. A moisture-proof and oxygen-barrier container bag with a gradient barrier layer according to claim 1, characterized in that: The reinforcement component includes a first surrounding strip (25) and a second surrounding strip (26). The first surrounding strip (25) is fixedly connected to the outer wall of the container bag (1), and the second surrounding strip (26) is fixedly connected to the outer wall of the container bag (1) near the bottom. The top and bottom of the first surrounding strip (25) are both fixedly connected to connecting straps (24). The top of the upper connecting strap (24) is fixedly connected to the bottom of the kit (21), and the bottom of the lower connecting strap (24) is fixedly connected to the top of the second surrounding strip (26).
5. A moisture-proof and oxygen-barrier container bag with a gradient barrier layer according to claim 4, characterized in that: The bottom of the second surrounding strip (26) is fixedly connected to a bottom support strip (27), and the bottom of the second surrounding strip (26) is fixedly connected to a bottom support fork strip (28). The end of the bottom support fork strip (28) is fixedly connected to the outer wall of the bottom support strip (27).
6. A moisture-proof and oxygen-barrier container bag with a gradient barrier layer according to claim 1, characterized in that: The container bag (1) includes an outer layer (11), an oxygen barrier layer (12) is fixedly connected to the inner wall of the outer layer (11), a water barrier layer (13) is fixedly connected to the inner wall of the oxygen barrier layer (12), and an inner layer (14) is fixedly connected to the inner wall of the water barrier layer (13).
7. A moisture-proof and oxygen-barrier container bag with a gradient barrier layer according to claim 1, characterized in that: A connecting hopper (101) is fixedly connected to the center of the bottom of the container bag (1), and a discharge gate valve (102) is fixedly connected to the bottom of the connecting hopper (101).