Damp-proof environment-friendly food packaging bag
By introducing moisture-proof components such as hollow layers, air inlets, and anti-backflow plates into food packaging bags, and utilizing the combination of air and desiccants, the problems of increased weight and reduced volume in existing moisture-proof and environmentally friendly food packaging bags have been solved, achieving both high-efficiency moisture protection and portability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO ERIC PACKING CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-04-17
AI Technical Summary
Existing moisture-proof and environmentally friendly food packaging bags have increased bag weight and reduced usable volume due to the addition of storage boxes, affecting the daily user experience.
It adopts a moisture-proof component, including a hollow layer, air inlet, support strip, anti-backflow plate and desiccant. The combination of air and desiccant improves the moisture-proof effect, and magnetic attraction achieves sealing, reducing the volume occupied.
It achieves a highly efficient moisture-proof effect while reducing the volume occupied by the bag, thus improving the bag's portability and moisture-proof performance.
Smart Images

Figure CN224131741U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of food packaging bag technology, specifically a moisture-proof and environmentally friendly food packaging bag. Background Technology
[0002] Food packaging bags are bags made of various materials used to package food. They typically have functions such as protecting food, facilitating storage and transportation, and promoting sales. They can effectively block the influence of external factors such as oxygen, moisture, and dust on food, while maintaining the flavor of the food. They can prevent food from coming into contact with external odor substances, prevent cross-contamination of flavors, and prevent the food's own aroma from dissipating, thus preserving the original flavor of the food.
[0003] An investigation revealed a Chinese utility model patent (publication number: CN220744065U) disclosing a moisture-proof and environmentally friendly food packaging bag. The bag body includes a sealed top, bottom, and sides. A cavity is located inside the bag body, with a storage box for holding a desiccant located at the bottom of the cavity. An installation box is located on the front side of the bag body, containing a garbage bag. This utility model, by installing a desiccant storage box at the bottom of the inner packaging bag, avoids direct contact between the desiccant and food. Furthermore, the installation box on the outside of the packaging bag allows garbage bags to be placed inside, ensuring both moisture protection and environmental friendliness.
[0004] Although the aforementioned patent achieves the effect of moisture protection for food by storing desiccant in the storage box through the arrangement of components such as storage boxes and installation boxes and the cooperation of these components, the addition of storage boxes increases the weight of the bag itself and reduces the usable volume inside the bag due to the material limitations of the bag body. This is not conducive to improving the daily user experience of the bag body.
[0005] Therefore, this utility model provides a moisture-proof and environmentally friendly food packaging bag to solve the above problems. Utility Model Content
[0006] (a) Technical problems to be solved
[0007] This utility model provides a moisture-proof and environmentally friendly food packaging bag, aiming to solve the problems mentioned in the background art.
[0008] (II) Technical Solution
[0009] To achieve the above objectives, this utility model provides the following technical solution:
[0010] A moisture-proof and environmentally friendly food packaging bag includes a bag body, with a protrusion fixedly connected to the bottom end of the bag body, and a moisture-proof component provided inside the bag body;
[0011] The moisture-proof component includes a hollow layer fixedly connected to the bottom of the bag body, an air inlet fixedly connected to the outer wall of the hollow layer, a support strip fixedly connected to the bottom inner end of the hollow layer, an anti-backflow plate rotatably connected to the side wall of the support strip via a pivot, and a carrying component provided at the top of the bag body.
[0012] As a preferred technical solution of this application, the moisture-proof component further includes a horizontal strip fixedly connected to the bottom of the hollow layer, and an anti-backflow strip is fixedly connected to the inner wall of the horizontal strip, and the number of the anti-backflow strips is several.
[0013] As a preferred technical solution of this application, the carrying component includes an arcuate layer fixedly connected to the top of the bag body, and the inner wall of the arcuate layer is connected by a magnetic strip.
[0014] As a preferred technical solution of this application, the top ends of the two curved layers are bonded with a sealing edge, and the inner wall of the sealing edge is provided with a circular groove for easy carrying.
[0015] As a preferred technical solution of this application, a storage bag is fixedly connected to the outer wall of the bag body, and the outer wall of the storage bag is connected to a take-up end by a button.
[0016] As a preferred technical solution of this application, the outer wall of the bag is fixedly connected with anti-collision pads, and the number of anti-collision pads is several.
[0017] (III) Beneficial Effects
[0018] By incorporating moisture-proof components, the coordinated operation of various parts enhances the moisture-proof effect on the food inside the bag, ensuring effectiveness while minimizing the bag's volume. The hollow layer allows air to be introduced through the air inlet, creating a sealed environment that isolates moisture from the external environment, thus improving the bag's moisture-proof performance. Simultaneously, desiccant can be introduced through the air inlet, with anti-backflow plates and strips limiting its movement. The desiccant's drying effect further enhances the bag's moisture-proof properties for the food. Attached Figure Description
[0019] Figure 1 A schematic diagram of the overall structure of a moisture-proof and environmentally friendly food packaging bag;
[0020] Figure 2 This is a schematic diagram of the hollow layer structure in a moisture-proof and environmentally friendly food packaging bag;
[0021] Figure 3 This is a schematic diagram of the anti-backflow plate in a moisture-proof and environmentally friendly food packaging bag;
[0022] Figure 4This is a schematic diagram of the structure of a storage bag in a moisture-proof and environmentally friendly food packaging bag.
[0023] In the picture:
[0024] 1. Bag body; 2. Hollow layer; 3. Air inlet; 4. Support strip; 5. Rotating shaft; 6. Anti-backflow plate; 7. Horizontal strip; 8. Anti-backflow strip; 9. Curved layer; 10. Magnetic strip; 11. Edge sealing; 12. Circular groove; 13. Storage bag; 14. Button; 15. Take-out end; 16. Anti-collision pad. Detailed Implementation
[0025] 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.
[0026] This utility model provides a moisture-proof and environmentally friendly food packaging bag, such as Figures 1-4 As shown, the moisture-proof and environmentally friendly food packaging bag includes a bag body 1, with protrusions fixedly connected to the bottom end of the bag body 1, and a moisture-proof component is provided inside the bag body 1.
[0027] The moisture-proof component includes a hollow layer 2 fixedly connected to the bottom of the bag body 1, an air inlet 3 fixedly connected to the outer wall of the hollow layer 2, a support strip 4 fixedly connected to the bottom of the hollow layer 2, an anti-backflow plate 6 rotatably connected to the side wall of the support strip 4 via a pivot 5, and a carrying component provided at the top of the bag body 1.
[0028] The moisture-proof component also includes a horizontal strip 7 fixedly connected to the bottom of the hollow layer 2. The inner wall of the horizontal strip 7 is fixedly connected to an anti-backflow strip 8, and there are several anti-backflow strips 8.
[0029] The carrying component includes a curved layer 9 fixedly connected to the top of the bag body 1, and the inner wall of the curved layer 9 is connected by a magnetic strip 10.
[0030] The top of the two curved layers 9 are bonded with an edge seal 11, and the inner wall of the edge seal 11 is provided with a circular groove 12 for easy carrying.
[0031] Specifically, the bag body 1 stores food, and its material properties prevent external contamination, thus preventing mold or damage. The raised dots cushion the impact in case the bag body 1 accidentally falls off, improving food preservation. The moisture-proof components work together to enhance the bag body 1's moisture-proof effect. Injecting air into the hollow layer 2 causes it to expand and form an insulating layer, reducing the impact of external moisture on the food inside the bag body 1. Injecting compressed air into the air inlet 3 further enhances the bag body 1's moisture-proof performance. Meanwhile, desiccant can be poured in through the air inlet 3 to further improve the moisture-proof effect. The anti-backflow plate 6, which is rotatably connected by the side wall pivot 5 of the support bar 4, can make the desiccant or air evenly distributed in the hollow layer 2, and will not cause uneven distribution of the desiccant due to shaking or other reasons. The two curved layers 9 can achieve the effect of sealing the packaging bag through the attraction of the magnetic strip 10. The magnetic attraction can prevent the outside air from entering, and at the same time make it easier for users to put food into the packaging bag, improving the use effect of the packaging bag. The sealing edge 11 and the round groove 12 make it easy for users to carry the packaging bag, improving the portability of the packaging bag.
[0032] A storage bag 13 is fixedly connected to the outer wall of the bag body 1, and the outer wall of the storage bag 13 is fastened with a take-out end 15 by a button 14.
[0033] The outer wall of the bag body 1 is fixedly connected with anti-collision pads 16, and there are several anti-collision pads 16.
[0034] Specifically, the storage bag 13 allows users to easily stuff residual garbage into the storage bag 13, avoiding littering and polluting the environment. The take-up and take-down end 15, which is secured by the button 14, allows users to easily close the take-up and take-down end 15. The anti-collision pad 16 is designed to prevent the packaging bag from being damaged by external impacts when food is placed in the packaging bag.
[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A moisture-proof and environment-friendly food packaging bag comprising a bag body (1), characterized in that: The bottom end of the bag body (1) is fixedly connected with a protrusion, and the inside of the bag body (1) is provided with a moisture-proof component; The moisture-proof component includes a hollow layer (2) fixedly connected to the bottom of the bag body (1), an air inlet (3) fixedly connected to the outer wall of the hollow layer (2), a support strip (4) fixedly connected to the bottom of the hollow layer (2), an anti-backflow plate (6) rotatably connected to the side wall of the support strip (4) via a pivot (5), and a carrying component provided at the top of the bag body (1).
2. The moisture-proof and environment-friendly food packaging bag according to claim 1, characterized in that: The moisture-proof component also includes a horizontal strip (7) fixedly connected to the bottom of the hollow layer (2), and the inner wall of the horizontal strip (7) is fixedly connected to an anti-backflow strip (8), and the number of the anti-backflow strips (8) is several.
3. The moisture-proof and environment-friendly food packaging bag according to claim 1, characterized in that: The carrying component includes an arcuate layer (9) fixedly connected to the top of the bag body (1), and the inner wall of the arcuate layer (9) is connected by a magnetic strip (10).
4. The moisture-proof and environment-friendly food packaging bag according to claim 3, characterized in that: The top ends of the two arcuate layers (9) are bonded with a sealing edge (11), and the inner wall of the sealing edge (11) is provided with a circular groove (12) for easy carrying.
5. The moisture-proof and environment-friendly food packaging bag according to claim 1, characterized in that: The outer wall of the bag body (1) is fixedly connected to a storage bag (13), and the outer wall of the storage bag (13) is fastened with a take-out end (15) by a button (14).
6. The moisture-proof and environment-friendly food packaging bag according to claim 1, characterized in that: The outer wall of the bag (1) is fixedly connected with anti-collision pads (16), and the number of anti-collision pads (16) is several.
Citation Information
Patent Citations
Damp-proof environment-friendly food packaging bag
CN220744065U