Self-sealing composite paper-plastic bag

Abstract

The utility model belongs to the technical field of paper-plastic bags, and particularly relates to a self-sealing composite paper-plastic bag which comprises a bottom layer, side layers are symmetrically and movably connected to the top of the bottom layer, an elastic face is fixedly connected between the two side layers, a first sealing strip is fixedly connected to the top of one side layer, and a second sealing strip is fixedly connected to the top of the other side layer. The top of the other side layer is fixedly connected with a second sealing strip, and a locking block is slidably connected between the first sealing strip and the second sealing strip. According to the utility model, the first sealing strip and the second sealing strip are extruded and combined from one end of the first sealing strip and one end of the second sealing strip through the locking block, the first sealing strip and the second sealing strip are clamped, the sealing of the paper-plastic bag is realized, the paper-plastic bag slides off from the other end, the second connecting ring is hung on the hook, and the hook is rotated and inserted into the clamping groove. The locking block forms a hanging piece to be hung outside the side layer, is attractive, novel and high in innovativeness, can be customized according to the requirements of shop names, characteristics or colors and the like, and improves individuation and specialization.

Description

Technical Field

[0001] This utility model relates to the field of paper-plastic bag technology, specifically a self-sealing composite paper-plastic bag. Background Technology

[0002] Paper-plastic bags are composite bags combining paper and plastic. Typically, they consist of an outer paper layer and an inner plastic layer; the paper layer provides strength and texture, while the plastic layer adds water resistance and durability. This design makes paper-plastic bags suitable for packaging needs requiring a certain level of strength and moisture protection, such as food, pharmaceuticals, and cosmetics. Combining the environmental friendliness of paper with the practicality of plastic, paper-plastic bags offer a packaging option that is both functional and environmentally friendly.

[0003] The existing technology has the following defects or problems: The existing technology, disclosed in CN208531165U, discloses a self-sealing composite paper-plastic bag, including a paper-plastic bag body, a woven fabric layer, a thickening layer, a waterproof layer, and a limiting block. Tension straps are installed on both sides of the paper-plastic bag body, and a paper-plastic bag opening is provided at the top of the paper-plastic bag body. Locking blocks are embedded on both sides of the paper-plastic bag opening, and a sealing block is fixed at the top of the paper-plastic bag opening. The woven fabric layer is placed on the outer wall of the paper-plastic bag body, and a wear-resistant strip is provided on the bottom side of the woven fabric layer. The thickening layer is fixed to the bottom of the paper-plastic bag body, and a cushioning pad is installed at the bottom end of the paper-plastic bag body. The waterproof layer is embedded on the back of the paper-plastic bag body. The limiting block is fixed to the inner side of the paper-plastic bag opening, and an anti-tear ring is installed in the middle of the limiting block. The two ends of the anti-tear ring are connected to the mounting groove.

[0004] The aforementioned equipment automatically closes the paper-plastic bag opening via locking blocks during use, reducing the hassle of repeated manual sealing. Tension bands at both ends of the paper-plastic bag body increase its tensile strength, preventing tearing due to excessive tension during use. Abrasion-resistant strips reduce wear on the outer wall of the paper-plastic bag from external sources, extending its service life. A cushioning pad at the bottom of the paper-plastic bag body disperses pressure on the inside, ensuring stability during use. The waterproof layer design enhances the bag's water resistance, preventing moisture penetration and maintaining dryness inside, significantly improving the practicality of the self-sealing composite paper-plastic bag.

[0005] In practical use, the above-mentioned structures are complex, have high production costs, lack novelty, cannot allow the locking blocks to move freely, and are not convenient for personalized customization. Therefore, it is necessary to propose a self-sealing composite paper-plastic bag.

[0006] It should be noted that the above content falls within the inventor's technical knowledge and does not necessarily constitute prior art. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a self-sealing composite paper-plastic bag, which solves the current problems.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a self-sealing composite paper-plastic bag, comprising a bottom layer, side layers symmetrically and movably connected to the top of the bottom layer, an elastic surface fixedly connected between the two side layers, a first sealing strip fixedly connected to the top of one side layer, a second sealing strip fixedly connected to the top of the other side layer, and a locking block slidably connected between the first sealing strip and the second sealing strip.

[0009] One of the side layers is externally fixedly connected to a fixing seat, and vertical plates are symmetrically fixedly connected to the bottom of the fixing seat. A second rotating shaft is rotatably connected between the two vertical plates.

[0010] The second rotating shaft is externally connected to a first connecting ring, and the first connecting ring is externally fixedly connected to a hook. The fixed base has a slot inside that is used to engage with the hook.

[0011] A connecting rod is fixedly connected to the top of the locking block, and a second connecting ring is fixedly connected to the top of the connecting rod.

[0012] As a preferred embodiment of this utility model, each of the side layers is symmetrically fixedly connected to a fixing block on the outside, each fixing block is rotatably connected to a first rotating shaft inside, each first rotating shaft is rotatably connected to a connecting block on the outside, and an arc-shaped handle is fixedly connected between every two connecting blocks.

[0013] As a preferred embodiment of this invention, each of the fixed blocks has a limiting head fixedly connected to both ends.

[0014] As a preferred embodiment of this utility model, the bottom of the bottom layer is symmetrically and fixedly connected with bottom blocks.

[0015] Compared with the prior art, this utility model provides a self-sealing composite paper-plastic bag, which has the following beneficial effects:

[0016] I. This self-sealing composite paper-plastic bag features a bottom layer, two side layers, two elastic surfaces, a first sealing strip, a second sealing strip, and a locking block. The locking block compresses and merges the first and second sealing strips from one end, locking them together to seal the bag. It then slides down from the other end, hooking a second connecting ring onto a hook. Rotating the hook and inserting it into a slot allows the locking block to hang on the outside of the side layer. This design is aesthetically pleasing, novel, and highly innovative. The locking block can be customized according to store name, characteristics, or color requirements, enhancing personalization and specialization. Each time it is used, the hook is removed from the slot to remove the locking block, allowing for easy access and preventing loss.

[0017] II. This self-sealing composite paper-plastic bag, by setting a fixing block, a first rotating shaft and an arc-shaped handle, rotates the arc-shaped handle, which drives the connecting block to rotate outside the first rotating shaft, thereby realizing the flipping of the arc-shaped handle for easy handling. The limiting head can limit the connecting rod to prevent the arc-shaped handle from falling off. By pulling the arc-shaped handle in the opposite direction, the first sealing strip and the second sealing strip are separated. The two side layers pull the elastic surface. The elastic surface has elasticity, which can enlarge the opening for easy storage. After being put in, it rebounds and resets due to the rebound force of the elastic surface, thus realizing self-sealing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram showing the overall structure of this utility model when opened;

[0020] Figure 3 This is a side view of the present invention.

[0021] Figure 4 This is a schematic diagram of the connection structure of the hook of this utility model.

[0022] In the diagram: 1. Bottom layer; 2. Side layer; 3. Elastic surface; 4. First sealing strip; 5. Second sealing strip; 6. Locking block; 7. Fixing block; 8. First pivot; 9. Connecting block; 10. Arc-shaped handle; 11. Fixing base; 12. Vertical plate; 13. Second pivot; 14. First connecting ring; 15. Hook; 16. Slot; 17. Connecting rod; 18. Second connecting ring; 19. Limiting head; 20. Bottom block. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[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] Example 1: As Figures 1-4As shown, this utility model provides a technical solution: a self-sealing composite paper-plastic bag, including a bottom layer 1, side layers 2 symmetrically and movably connected to the top of the bottom layer 1, an elastic surface 3 fixedly connected between the two side layers 2, a first sealing strip 4 fixedly connected to the top of one side layer 2, a second sealing strip 5 fixedly connected to the top of the other side layer 2, a locking block 6 slidably connected between the first sealing strip 4 and the second sealing strip 5, a fixing seat 11 fixedly connected to the outside of one side layer 2, vertical plates 12 symmetrically and fixedly connected to the bottom of the fixing seat 11, a second rotating shaft 13 rotatably connected between the two vertical plates 12, a first connecting ring 14 movably connected to the outside of the second rotating shaft 13, a hook 15 fixedly connected to the outside of the first connecting ring 14, a slot 16 for cooperating with the hook 15 is opened inside the fixing seat 11, a connecting rod 17 fixedly connected to the top of the locking block 6, and a second connecting ring 18 fixedly connected to the top of the connecting rod 17.

[0026] In this embodiment, the locking block 6 is used to squeeze and merge the first sealing strip 4 and the second sealing strip 5 from one end, locking the first sealing strip 4 and the second sealing strip 5 together to seal the paper-plastic bag. Then, it slides down from the other end, hanging the second connecting ring 18 on the hook 15. The hook 15 is then rotated and inserted into the slot 16, so that the locking block 6 forms a hanging piece that hangs on the outside of the side layer 2. It is beautiful, novel and highly innovative. The locking block 6 can be customized according to the store name, characteristics or color requirements to improve personalization and specialization. Each time it is used, the hook 15 is pulled out of the slot 16 to remove the locking block 6, which can be taken out as needed to prevent loss.

[0027] Example 2: Figures 1-4 As shown, each side layer 2 is symmetrically fixedly connected to a fixing block 7 on the outside, each fixing block 7 is rotatably connected to a first rotating shaft 8 inside, each first rotating shaft 8 is rotatably connected to a connecting block 9 on the outside, an arc-shaped handle 10 is fixedly connected between every two connecting blocks 9, and a limit head 19 is fixedly connected to both ends of each fixing block 7. The bottom layer 1 is symmetrically fixedly connected to a bottom block 20.

[0028] In this embodiment, by rotating the arc-shaped handle 10, the arc-shaped handle 10 drives the connecting block 9 to rotate outside the first rotating shaft 8, thereby realizing the flipping of the arc-shaped handle 10 for easy retrieval. The limiting head 19 can limit the connecting rod 17 to prevent the arc-shaped handle 10 from falling off. By pulling the arc-shaped handle 10 in the opposite direction, the first sealing strip 4 and the second sealing strip 5 are separated. The two side layers 2 pull the elastic surface 3. The elastic surface 3 has elasticity, thereby increasing the opening for easy storage. After being placed, it rebounds and resets due to the rebound force of the elastic surface 3, achieving self-sealing. The bottom block 20 can raise the bottom layer 1, thereby preventing the bottom layer 1 from directly contacting the placement surface and improving the waterproof effect.

[0029] The working principle of this embodiment is as follows: During use, the locking block 6 squeezes and merges the first sealing strip 4 and the second sealing strip 5 from one end, locking the first sealing strip 4 and the second sealing strip 5 together to seal the paper-plastic bag. Then, it slides down from the other end, hooking the second connecting ring 18 onto the hook 15. The hook 15 is then rotated and inserted into the slot 16, causing the locking block 6 to form a hanging piece that suspends from the outside of the side layer 2. This design is aesthetically pleasing, novel, and highly innovative. The locking block 6 can be customized according to the store name, characteristics, or color requirements, enhancing personalization and specialization. Each time it is used, the hook 15 is removed from the slot 16. The locking block 6 can be removed for easy access and to prevent loss. By rotating the arc-shaped handle 10, the connecting block 9 rotates outside the first rotating shaft 8, thereby flipping the arc-shaped handle 10 for easy retrieval. The limiting head 19 can limit the connecting rod 17 to prevent the arc-shaped handle 10 from falling off. By pulling the arc-shaped handle 10 in the opposite direction, the first sealing strip 4 and the second sealing strip 5 are separated. The two side layers 2 pull the elastic surface 3, which has elasticity, thereby increasing the opening for easy storage. After being inserted, it rebounds and resets due to the rebound force of the elastic surface 3, achieving self-sealing.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A self-sealing composite paper-plastic bag, characterized in that: Includes a bottom layer (1), the top of which is symmetrically and movably connected to a side layer (2), and an elastic surface (3) is fixedly connected between the two side layers (2). A first sealing strip (4) is fixedly connected to the top of one side layer (2), and a second sealing strip (5) is fixedly connected to the top of the other side layer (2). A locking block (6) is slidably connected between the first sealing strip (4) and the second sealing strip (5). One of the side layers (2) is fixedly connected to a fixed seat (11) on the outside. The bottom of the fixed seat (11) is symmetrically fixedly connected to a vertical plate (12). A second rotating shaft (13) is rotatably connected between the two vertical plates (12). The second rotating shaft (13) is externally connected to a first connecting ring (14), and the first connecting ring (14) is externally fixedly connected to a hook (15). The fixed base (11) is internally provided with a slot (16) for use with the hook (15). The top of the locking block (6) is fixedly connected to a connecting rod (17), and the top of the connecting rod (17) is fixedly connected to a second connecting ring (18).

2. The self-sealing composite paper-plastic bag according to claim 1, characterized in that: Each of the side layers (2) is symmetrically fixed to the outside of a fixing block (7), each fixing block (7) is rotatably connected to a first rotating shaft (8), each first rotating shaft (8) is rotatably connected to the outside of a connecting block (9), and an arc-shaped handle (10) is fixedly connected between every two connecting blocks (9).

3. A self-sealing composite paper-plastic bag according to claim 2, characterized in that: Each of the fixed blocks (7) is fixedly connected to a limit head (19) at both ends.

4. A self-sealing composite paper-plastic bag according to claim 1, characterized in that: The bottom layer (1) is symmetrically fixedly connected to a bottom block (20).

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