Tiepiece flexible freight bag
By designing a reinforced FIBC (Flexible Intermediate Bulk Container), the problem of unstable shape of the FIBC after being filled with materials is solved, achieving fixed shape and lifting stability of the FIBC, which is suitable for packaging and transporting battery raw materials.
Patent Information
- Application Number
- CN202520512608.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-21
AI Technical Summary
Existing FIBCs (Flexible Intermediate Bulk Containers) are difficult to maintain their shape after being filled with materials, and are prone to bulging, swelling or deformation, which affects their use and space utilization.
Design a reinforced container bag comprising an outer bag and an inner bag. The inner bag has reinforced tabs at its four corners, and the outer bag has a handle and reinforcing ribs at its top. The handle and reinforcing ribs are integrally formed. The outer bag and the inner bag are bonded together with hot melt adhesive, and transverse and longitudinal reinforcing strips are provided between the outer bag and the inner bag. The outer bag is made of aluminum foil film, and the inner bag is made of polyethylene film.
Ensure that the container bag maintains its square structure after being filled, preventing bulging and deformation, improving lifting stability and strength, enhancing lifting capacity, saving space, facilitating neat stacking, and suitable for packaging and transporting battery raw materials.
Smart Images

Figure CN223891603U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of container bag technology, and more specifically, to a reinforced container bag. Background Technology
[0002] FIBCs (Flexible Intermediate Bulk Containers) offer advantages such as large capacity, ease of loading and unloading, labor savings, and increased efficiency. They are flexible and adaptable packaging containers. FIBCs are commonly used to package powdered or granular battery raw materials during transportation.
[0003] To make full use of container space, it is necessary to ensure that the shape of the FIBC (Flexible Intermediate Bulk Container) remains consistent for neat placement. However, it is difficult to guarantee that the shape of the existing FIBC remains unchanged after it is filled with materials, and problems such as bulging, expansion, or deformation may occur, causing the FIBC to exceed size limits and affecting its use. Utility Model Content
[0004] The purpose of this utility model is to provide a reinforced container bag that can prevent the container bag from bulging, expanding and deforming, making it easy to stack neatly in a container and saving space.
[0005] This utility model is achieved through the following technical solution:
[0006] A reinforced container bag includes a square-shaped outer bag and an inner bag. The inner bag is disposed inside the outer bag, and the outer wall of the inner bag is fixedly connected to the inner wall of the outer bag. Reinforcing strips are longitudinally arranged at four opposite corners inside the inner bag. Handles are provided at four opposite corners at the top of the outer bag. Two handles, axially symmetrical along the center line of the outer bag, extend to the bottom of the outer bag and are connected by reinforcing ribs. The two reinforcing ribs are intersecting at the bottom of the outer bag. The handles and the reinforcing ribs are integrally formed.
[0007] Furthermore, the tensioning strip is provided with multiple through holes.
[0008] Furthermore, the tensioning strip is rectangular in shape.
[0009] Furthermore, a drawstring is provided at the opening of the outer bag, and a tightening strap is provided on the drawstring.
[0010] Furthermore, a plurality of transverse reinforcing strips and longitudinal reinforcing strips are provided between the outer bag and the inner bag, and the transverse reinforcing strips and the longitudinal reinforcing strips are arranged alternately.
[0011] Furthermore, the outer bag and the inner bag are bonded together with hot melt adhesive, and the outer bag and the inner bag have multiple evenly distributed hot melt adhesive strips.
[0012] Furthermore, the outer bag is an aluminum foil film, and the inner bag is a polyethylene film.
[0013] The technical solution of this utility model has at least the following advantages and beneficial effects:
[0014] In this invention, the reinforcing ribs ensure that the FIBC (Flexible Intermediate Bulk Container) retains its square structure after being filled, making it less prone to tipping over and preventing bulging, expansion, and deformation. This facilitates neat stacking during loading, saving space and increasing loading capacity. Simultaneously, it ensures the FIBC's dimensions do not exceed limits during use, allowing for easy passage through automated equipment. The combination of handles and reinforcing ribs enhances the handle's lifting capacity, prevents breakage, and improves installation stability. It also extends the stress on the bag body along the sides to the bottom, reinforcing its strength and improving overall load-bearing capacity, effectively preventing tearing and damage. The crisscrossing arrangement of the reinforcing ribs further improves the uniformity of stress on the bag body, enhancing its stability during lifting. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a structural schematic diagram of the elasticized container bag provided in Embodiment 1 of this utility model;
[0017] Figure 2 This is a bottom view of the elasticized container bag provided in Embodiment 1 of this utility model;
[0018] Figure 3 This is another structural schematic diagram of the elasticized container bag provided in Embodiment 1 of this utility model;
[0019] Figure 4 This is a schematic diagram of the structure of the inner bag provided in Embodiment 1 of this utility model.
[0020] Icons: 1-Outer bag, 2-Inner bag, 3-Stretcher piece, 4-Through hole, 5-Handle, 6-Hot melt adhesive strip, 7-Reinforcing rib, 8-Closure fabric, 9-Tightening strap, 10-Horizontal reinforcing strip, 11-Vertical reinforcing strip. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0024] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] Example 1
[0027] like Figure 1-4As shown, this embodiment provides a reinforced container bag, including a square-shaped outer bag 1 and an inner bag 2. The inner bag 2 is disposed inside the outer bag 1, and the outer wall of the inner bag 2 is fixedly connected to the inner wall of the outer bag 1. Reinforcing strips 3 are longitudinally arranged at the four opposite corners inside the inner bag 2. Handles 5 are provided at the four opposite corners of the upper part of the outer bag 1. Two handles 5 extend symmetrically along the center line of the outer bag 1 to the bottom of the outer bag 1 and are connected by reinforcing ribs 7. The two reinforcing ribs 7 are intersecting at the bottom of the outer bag 1. The handles 5 and the reinforcing ribs 7 are integrally formed.
[0028] The use of reinforcing ribs 3 ensures that the FIBC (Flexible Intermediate Bulk Container) retains its square structure after being filled, making it less prone to tipping over and preventing bulging, expansion, and deformation. This facilitates neat stacking during loading, saving space and increasing loading capacity. It also ensures that the FIBC's dimensions do not exceed limits during use, allowing for easy passage through automated equipment. The handles 5 and reinforcing ribs 7 work together to enhance the lifting capacity of the handles 5, preventing breakage and improving installation stability. They also extend the stress on the bag body along its sides to the bottom, reinforcing its strength and improving the overall load-bearing capacity, effectively preventing tearing and damage. The crisscrossing arrangement of the reinforcing ribs 7 further improves the uniformity of stress on the bag body, enhancing the stability of the FIBC during lifting.
[0029] In a specific embodiment of this invention, the reinforcing strip 3 is provided with multiple through holes 4. The through holes 4 facilitate material flow and prevent incomplete material filling between the reinforcing strip 3 and the outer bag 1.
[0030] In this specific embodiment, the tensioning plate 3 is rectangular. This increases the strength of the tensioning plate 3 and prevents it from breaking.
[0031] In this specific embodiment, a sealing cloth 8 is provided at the opening of the outer bag 1, and a tightening strap 9 is provided on the sealing cloth 8. The sealing cloth 8 and the tightening strap 9 can seal the container bag to prevent the material in the container bag from spilling.
[0032] In this specific embodiment, a plurality of transverse reinforcing strips 10 and longitudinal reinforcing strips 11 are provided between the outer bag 1 and the inner bag 2, and the transverse reinforcing strips 10 and the longitudinal reinforcing strips 11 are arranged alternately. The longitudinal reinforcing strips 11 and the transverse reinforcing strips 10 work together to improve the load-bearing strength of the container bag.
[0033] In this specific embodiment, the outer bag 1 and the inner bag 2 are bonded together with hot melt adhesive, and the outer bag 1 and the inner bag 2 have multiple evenly distributed hot melt adhesive strips 6. The multiple hot melt adhesive strips 6 can improve the connection strength between the outer bag 1 and the inner bag 2.
[0034] In this specific embodiment, the outer bag 1 is an aluminum foil film, and the inner bag 2 is a polyethylene film. The high airtightness of the aluminum foil film effectively blocks oxygen and moisture, improving the safety of the material packaging. The polyethylene film is tough and not easily broken.
[0035] It should be noted that the connection between the tie plate 3, the reinforcing rib 7, the handle 5, the transverse reinforcing strip 10, the longitudinal reinforcing strip 11 and the outer bag 1 and the inner bag 2 is glued, but other fixed connection methods are also possible.
[0036] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A resilient-reinforced container bag, characterized in that: The device includes a square-shaped outer bag and an inner bag. The inner bag is disposed inside the outer bag, and the outer wall of the inner bag is fixedly connected to the inner wall of the outer bag. Tight straps are arranged longitudinally at the four opposite corners inside the inner bag. Handles are provided at the four opposite corners of the upper part of the outer bag. Two handles, axially symmetrical along the center line of the outer bag, extend to the bottom of the outer bag and are connected by reinforcing ribs. The two reinforcing ribs are arranged to cross at the bottom of the outer bag. The handles and the reinforcing ribs are integrally formed.
2. The reinforced container bag according to claim 1, characterized in that, The tensioning strip has multiple through holes.
3. The reinforced container bag according to claim 2, characterized in that, The tensioning strip is rectangular in shape.
4. The reinforced container bag according to claim 1, characterized in that, The outer bag opening is provided with a drawstring, and the drawstring is provided with a tightening strap.
5. The reinforced container bag according to claim 1, characterized in that, A plurality of transverse and longitudinal reinforcing strips are provided between the outer bag and the inner bag, and the transverse and longitudinal reinforcing strips are arranged alternately.
6. The reinforced container bag according to claim 1, characterized in that, The outer bag and the inner bag are bonded together with hot melt adhesive, and the outer bag and the inner bag have multiple evenly distributed hot melt adhesive strips.
7. The reinforced container bag according to claim 1, characterized in that, The outer bag is made of aluminum foil film, and the inner bag is made of polyethylene film.