Large-size packaging bag
By introducing a tightening and sealing mechanism with stretchable material into large-size packaging bags, the problem of poor packaging bag tightness is solved, achieving tight wrapping and sealing durability of items, and improving the stability and security of the packaging bags.
Patent Information
- Application Number
- CN202520737411.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-18
AI Technical Summary
Existing large-size packaging bags do not have good tightness after being loaded with materials, resulting in excessive local stress, increasing the risk of breakage, and affecting the safety and reliability of material transportation.
The tightening and sealing mechanisms, made of stretchable and elastic materials, work together with tightening strips, connecting strips, pull ropes, and sealing rings to achieve overall tightening and tight sealing of the bag, enhance the tension and load-bearing capacity of the packaging bag, and use Velcro to fix the sealing rings to prevent leakage of the contents.
It improves the stability and security of the packaging bag, enhances the durability of the tight wrapping and sealing of the goods, prevents leakage of goods during transportation, and improves the overall reliability and security of the packaging bag.
Smart Images
Figure CN223935447U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging bag technology, and in particular to a large-size packaging bag. Background Technology
[0002] Large-size packaging bags are packaging containers used to hold and transport large, heavy, or bulk items. They are typically made of durable materials such as plastics, woven fabrics, or composite materials. Their applications are wide-ranging, covering industries such as industry, agriculture, construction, and logistics, and they are commonly used for packaging building materials, chemical raw materials, grains, and animal feed.
[0003] Large-size packaging bags typically consist of a bag body, lifting straps, an inlet, and an outlet. The bag body, made of high-strength material, is the main load-bearing component and is used to hold the goods. The lifting straps are used for lifting and handling. The inlet is used to fill the bag with material, and the outlet is used for unloading. Its working principle is to secure the bag with lifting equipment, load material into it through the inlet, utilize the strength and stability of the bag body to support the goods, keeping them intact during transportation or storage, and quickly release the material through the outlet during unloading.
[0004] In the existing technology, due to the characteristics of the loaded materials, the packaging bag does not fit tightly around the loaded materials, leaving some space after the packaging bag is loaded. This results in excessive local stress on the packaging bag, increasing the risk of packaging bag breakage and affecting the subsequent transportation of materials.
[0005] Therefore, a large-size packaging bag is proposed to solve the above problems. Utility Model Content
[0006] To overcome the above shortcomings, this utility model provides a large-size packaging bag, which aims to improve the problem of poor tightness in wrapping the loaded materials in the existing packaging bags.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] A large-sized packaging bag includes a bag body, the bag body having folding sections around its four sides, a tightening mechanism inside the bag body for tightening the entire packaging bag, and a sealing mechanism on the outside of the bag body for preventing items from leaking from the bag opening.
[0009] The tightening mechanism includes tightening strips, with the outer sides of two tightening strips fixedly connected to the inside of the bag body. Connecting strips are fixedly connected to both ends of the tightening strips. Multiple fixing posts are fixedly connected to the outer side of the bag body. Pull ropes are slidably connected inside the fixing posts. One end of the pull rope is fixedly connected to the end of the connecting strip, and the other ends of the two pull ropes on the same side are fixedly connected to handles.
[0010] As a further description of the above technical solution:
[0011] The pull rope, tightening strip, and connecting strip are made of stretchable and elastic material;
[0012] As a further description of the above technical solution:
[0013] A sponge pad is provided in the middle of the handle;
[0014] As a further description of the above technical solution:
[0015] The sealing mechanism includes a sealing ring, the inner side of which is fixedly connected to the outer side of the bag body. The sealing ring is telescopic, and a fixing buckle is fixedly connected inside the sealing ring. An elastic band is provided inside the sealing ring, and a fixing component is fixedly connected to one end of the elastic band.
[0016] As a further description of the above technical solution:
[0017] The fixing component includes a fixing end, one end of which is fixedly connected to one end of the elastic band. A Velcro fastener is provided on the outside of the fixing end, with the female fastener on the outside of the fixing end and the female fastener on the outside of the sealing ring.
[0018] As a further description of the above technical solution:
[0019] The outer side of the elastic band is slidably connected to the inside of the sealing ring, and the other end of the elastic band is fixedly connected to the inside of the sealing ring by a fastener;
[0020] As a further description of the above technical solution:
[0021] The inside of the bag is configured as a double-layered woven bag.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the handle applies a pulling force, pulls the drawstring and transmits the force to the connecting strip and tightening strip, causing the bag to shrink synchronously; the tightening strip, connecting strip and drawstring are made of stretchable elastic material, so that the bag is tightened as a whole under the action of tension, forming a tight wrapping of the internal items, thereby improving the tension and load-bearing capacity of the packaging bag through the tightening process, while adapting to the packaging needs of items of different sizes, enhancing the stability and safety of the packaging, and thus adapting to the packaging needs of large-sized items.
[0024] 2. In this utility model, the elastic band is stretched and fixed by the fixing buckle inside the sealing ring to prevent the elastic band from slipping. At the same time, the sealing ring contracts synchronously, causing the opening of the bag to gradually tighten. One end of the elastic band is fixedly connected to the Velcro tab on the outside of the sealing ring through the fixing end. The female tab and the female tab are glued together to achieve a stable fixation of the elastic band. This achieves effective sealing of the bag opening, thereby enhancing the tightness and durability of the seal, preventing leakage of goods during transportation, and improving the reliability and safety of the packaging. Attached Figure Description
[0025] Figure 1 This is a three-dimensional schematic diagram of a large-size packaging bag proposed in this utility model;
[0026] Figure 2 This is a schematic diagram of the tightening mechanism for a large-size packaging bag proposed in this utility model;
[0027] Figure 3 This is a schematic diagram of the sealing mechanism for a large-size packaging bag proposed in this utility model;
[0028] Figure 4 for Figure 2 Enlarged view of point A in the middle;
[0029] Figure 5 for Figure 3 Enlarged view of point B in the middle.
[0030] Legend:
[0031] 1. Bag body; 2. Folding section; 3. Tightening mechanism; 301. Tightening strip; 302. Connecting strip; 303. Fixing post; 304. Pull cord; 305. Handle; 4. Sealing mechanism; 401. Sealing ring; 402. Fixing buckle; 403. Elastic band; 404. Fixing end; 405. Velcro. Detailed Implementation
[0032] 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.
[0033] Reference Figure 1 , Figure 2 and Figure 4This utility model provides an embodiment of a large-size packaging bag, comprising a bag body 1. The interior of the bag body 1 is configured as a double-layer woven bag, which improves the load-bearing capacity of the packaging bag, making it suitable for packaging large and heavy items. Folding sections 2 are provided around the bag body 1, which facilitates storage and transportation when not in use, improving flexibility and convenience. A tightening mechanism 3 is provided inside the bag body 1 to tighten the entire packaging bag, and a sealing mechanism 4 is provided on the outside of the bag body 1 to prevent leakage of items from the bag opening.
[0034] The tightening mechanism 3 includes tightening strips 301. The outer sides of two tightening strips 301 are fixedly connected to the inside of the bag body 1, allowing the bag body 1 to contract and expand synchronously with the extension and retraction of the tightening strips 301. Connecting strips 302 are fixedly connected to both ends of the tightening strips 301, transmitting external forces to the tightening strips 301 to enable their extension and retraction. Multiple fixing posts 303 are fixedly connected to the outer side of the bag body 1, providing a foundation for subsequent structures and integrating the entire tightening mechanism 3 with the bag body 1. A pull rope 304 is slidably connected inside the fixing posts 303. The pull rope 304, tightening strips 301, and connecting strips 302 are made of a stretchable elastic material. The use of this material increases the flexibility and durability of the entire tightening mechanism 3, adapting to the packaging needs of items of different sizes. One end of the pull cord 304 is fixedly connected to the end of the connecting strip 302, and the other ends of the two pull cords 304 on the same side are fixedly connected to the handles 305. By pulling the handles 305, the pull cords 304 drive the tightening strip 301 and the connecting strip 302, thereby tightening the bag body 1. A sponge pad is provided in the middle of the handles 305.
[0035] Reference Figure 1 , Figure 3 and Figure 5The sealing mechanism 4 includes a sealing ring 401, the inner side of which is fixedly connected to the outer side of the bag body 1. The sealing ring 401 is telescopic, allowing it to contract synchronously with the bag body 1, facilitating the sealing of the opening of the bag body 1. A fixing buckle 402 is fixedly connected inside the sealing ring 401, and an elastic band 403 is provided inside the sealing ring 401. The elastic band 403 makes the seal tighter, thus accommodating items of different sizes. The outer side of the elastic band 403 is slidably connected to the inside of the sealing ring 401 to prevent the inside of the sealing ring 401 from obstructing the movement of the elastic band 403 and preventing the elastic band 403 from jamming and failing. One end of the elastic band 403 is fixedly connected to a fixing component. The design of the fixing component makes the sealing operation simpler and more reliable. The other end of the elastic band 403 is fixedly connected to the inside of the sealing ring 401 through the fixing buckle 402, so that one end of the elastic bag is fixed, which makes it easy to stretch the elastic bag and at the same time prevents the elastic band 403 from slipping off.
[0036] The fixing component includes a fixing end 404, one end of which is fixedly connected to one end of the elastic band 403. A Velcro 405 is provided on the outside of the fixing end 404. The female adhesive of the Velcro 405 is located on the outside of the fixing end 404, and the female adhesive of the Velcro 405 is located on the outside of the sealing ring 401. The fixing end 404 is fixedly connected to the sealing ring 401 through the Velcro 405, thereby fixing the elastic band 403 and closing the sealing ring 401. The use of Velcro 405 increases the tightness and durability of the seal, preventing leakage of items during transportation.
[0037] Working principle: The user applies a pulling force through the handle 305, and the sponge padding in the handle 305 increases the comfort of operation; then, the handle 305 pulls the pull rope 304, and the pull rope 304 transmits the force to the connecting strip 302 through the sliding connection of the fixed post 303; the connecting strip 302 then transmits the pulling force to the tightening strip 301. Since the tightening strip 301, the connecting strip 302 and the pull rope 304 are all made of stretchable elastic material, the tightening strip 301 expands and contracts under the action of the pulling force, causing the bag body 1 to contract synchronously; finally, the bag body 1 is tightened as a whole under the action of the tightening mechanism 3, forming a tight wrapping of the internal items, improving the tension and load-bearing capacity of the packaging bag, and adapting to the packaging needs of items of different sizes.
[0038] Then, stretch the other end of the elastic band 403 so that it is fixed by the fixing buckle 402 inside the sealing ring 401, ensuring that the elastic band 403 will not slip during the stretching process. As the elastic band 403 is stretched, the sealing ring 401 contracts synchronously, causing the opening of the bag body 1 to gradually tighten, forming a tight sealing effect. At the same time, one end of the elastic band 403 is fixedly connected to the Velcro 405 on the outside of the sealing ring 401 through the fixing end 404. At the same time, the Velcro 405 on the fixing end 404 is glued to the outer side of the sealing ring 401, thus fixing the elastic band 403, thereby enhancing the durability and sealing of the seal and preventing leakage of the goods during transportation.
[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A large-size packaging bag, comprising a bag body (1), characterized in that: The bag body (1) is provided with folding sections (2) around its perimeter, and the inside of the bag body (1) is provided with a tightening mechanism (3) for tightening the entire packaging bag. The outside of the bag body (1) is provided with a sealing mechanism (4) for preventing items from leaking from the bag opening. The tightening mechanism (3) includes tightening strips (301), the outer sides of two tightening strips (301) are fixedly connected to the inside of the bag body (1), both ends of the tightening strips (301) are fixedly connected to connecting strips (302), the outer side of the bag body (1) is fixedly connected to multiple fixing posts (303), the inside of the fixing posts (303) is slidably connected to pull ropes (304), one end of the pull ropes (304) is fixedly connected to the end of the connecting strips (302), and the other ends of the two pull ropes (304) on the same side are fixedly connected to handles (305).
2. The large-size packaging bag according to claim 1, characterized in that: The pull rope (304), tightening strip (301), and connecting strip (302) are made of stretchable elastic material.
3. A large-size packaging bag according to claim 1, characterized in that: The handle (305) is provided with a sponge pad in the middle.
4. A large-size packaging bag according to claim 1, characterized in that: The sealing mechanism (4) includes a sealing ring (401), the inner side of which is fixedly connected to the outer side of the bag body (1). The sealing ring (401) is telescopic, and a fixing buckle (402) is fixedly connected inside the sealing ring (401). An elastic band (403) is provided inside the sealing ring (401), and a fixing component is fixedly connected to one end of the elastic band (403).
5. A large-size packaging bag according to claim 4, characterized in that: The fixing component includes a fixing end (404), one end of which is fixedly connected to one end of the elastic band (403). A Velcro (405) is provided on the outside of the fixing end (404), with the female adhesive of the Velcro (405) located on the outside of the fixing end (404) and the female adhesive of the Velcro (405) located on the outside of the sealing ring (401).
6. A large-size packaging bag according to claim 4, characterized in that: The outer side of the elastic band (403) is slidably connected to the inside of the sealing ring (401), and the other end of the elastic band (403) is fixedly connected to the inside of the sealing ring (401) by a fastener (402).
7. A large-size packaging bag according to claim 1, characterized in that: The interior of the bag body (1) is configured as a double-layer woven bag.