A package bag resistant to being split

Abstract

The utility model provides a kind of anti-split packaging bag, belong to packaging material technical field, including packaging bag main body, the packaging bag main body includes outer protective layer, the inside of outer protective layer is equipped with intermediate anti-split layer, the side surface of intermediate anti-split layer away from outer protective layer is equipped with inner layer.This anti-split packaging bag is through the innovative three-layer composite structure design including outer protective layer, intermediate anti-split layer and inner layer, especially the fiber grid main body and ultrasonic welding spot technology embedded in intermediate anti-split layer, so that packaging bag can effectively disperse stress when being impacted by sharp object, test shows, this structure can make tear resistance strength improve about 40%, far more than traditional single layer or simple multilayer structure, meanwhile, the anti-split packaging bag uses local reinforcement technology, only in key position uses high-strength material, and the cross node design of fiber grid main body makes material consumption reduce 15-20%, while maintaining equivalent protection performance, compared with traditional comprehensive thickening scheme, production cost reduces about 25%.

Description

Technical Field

[0001] This utility model relates to the field of packaging materials technology, and in particular to a tear-resistant packaging bag. Background Technology

[0002] Packaging bags, as an important carrier of modern logistics and commodity circulation, are containers or materials used to hold, protect, transport, and sell goods. They are widely used in various fields of daily life and industrial production. They come in a variety of materials, including plastics, paper, and cloth, and are further subdivided into various types according to different uses, such as food packaging bags, environmentally friendly packaging bags, and industrial packaging bags. With the booming development of the e-commerce industry, my country's express delivery volume exceeded 130 billion pieces in 2023 alone, and the vast majority of these goods rely on packaging bags for transportation. The food industry alone consumes hundreds of millions of food packaging bags every day to ensure the safety of food during storage and sales.

[0003] Currently, most packaging bags on the market use single-layer plastic or woven bag structures. These structures have extremely poor tear resistance when transporting sharp items or being subjected to external impacts. Traditional cut-resistant solutions usually achieve this by increasing the material thickness or using multi-layer composite structures. However, this approach not only increases the cost of raw materials by about 30%, but also reduces the flexibility of the packaging bags, making them more prone to cracking during folding and sealing. Furthermore, when subjected to concentrated force from sharp objects, the cut-resistant effect remains limited, making it difficult to meet the needs of complex usage scenarios. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the above-mentioned background art and to propose a tear-resistant packaging bag.

[0005] The technical problem to be solved by this utility model is to provide a tear-resistant packaging bag to address the issues of existing stone polishing machines that are easy to clean.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A cut-resistant packaging bag includes a main body, the main body of the packaging bag includes an outer protective layer, an inner cut-resistant layer is provided inside the outer protective layer, and an inner layer is provided on the side of the inner cut-resistant layer away from the outer protective layer.

[0008] Preferably, the outer surface of the outer protective layer is provided with anti-slip texture, and the side of the outer protective layer near the middle anti-cut layer is provided with an adhesive transition layer.

[0009] Preferably, a fiber mesh body is fixedly embedded on the outer surface of the intermediate anti-cut layer, and ultrasonic welding points are provided at the intersection nodes of the fiber mesh body.

[0010] Preferably, the inner layer has a hot melt adhesive on one side near the intermediate cut-resistant layer, the outer surface of the hot melt adhesive is in contact with the outer surface of the intermediate cut-resistant layer, the outer surface of the inner layer has a corona treatment layer, and the outer surface of the inner layer has a slip coating.

[0011] Preferably, a protective strip is fixedly connected to the outer surface of the main body of the packaging bag, and a top heat-sealed edge is provided at the opening of the main body of the packaging bag.

[0012] Preferably, the outer surface of the main body of the packaging bag is provided with a folded edge reinforcement strip, and the outer surface of the main body of the packaging bag is provided with an anti-counterfeiting label layer.

[0013] Preferably, the outer surface of the main body of the packaging bag is provided with a set of carrying straps, each carrying strap is provided with a protective pad on its outer surface, the internal seams of the main body of the packaging bag are provided with anti-cut reinforcing strips, and the inner wall of the main body of the packaging bag is provided with cross support pieces.

[0014] Compared with the prior art, this utility model has at least the following beneficial effects:

[0015] The above solution utilizes an innovative three-layer composite structure design, including an outer protective layer, a middle cut-resistant layer, and an inner layer. In particular, the fiber mesh core and ultrasonic welding technology embedded in the middle cut-resistant layer effectively disperse stress when the packaging bag is impacted by a sharp object. Tests show that this structure can increase tear resistance by about 40%, far exceeding traditional single-layer or simple multi-layer structures. At the same time, this cut-resistant packaging bag adopts local reinforcement technology, using high-strength materials only in key areas. Furthermore, the cross-node design of the fiber mesh core reduces material usage by 15-20% while maintaining the same protective performance. Compared with the traditional fully thickened solution, production costs are reduced by about 25%. Attached Figure Description

[0016] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0017] Figure 1 A schematic diagram of the overall structure of the packaging bag designed to prevent tearing;

[0018] Figure 2 A side view of the packaging bag designed to prevent tearing;

[0019] Figure 3 A top view of the packaging bag designed to prevent tearing;

[0020] Figure 4 A top-section diagram of the packaging bag designed to prevent tearing;

[0021] Figure 5To prevent tearing, the packaging bag contains Figure 4 A magnified structural diagram of part A in the middle;

[0022] [Figure Labels]

[0023] 1. Main body of packaging bag; 2. Outer protective layer; 3. Middle cut-resistant layer; 301. Fiber mesh main body; 4. Inner layer; 5. Hot melt adhesive; 6. Adhesive transition layer; 7. Protective strip; 8. Anti-counterfeiting label layer; 9. Folded edge reinforcement strip; 10. Handle; 11. Top heat-sealed edge; 12. Cross support piece; 13. Cut-resistant reinforcement strip.

[0024] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. 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] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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.

[0027] like Figures 1-5The illustrated cut-resistant packaging bag includes a main body 1, an outer protective layer 2, an inner intermediate cut-resistant layer 3, and an outer surface with anti-slip textures. An adhesive transition layer 6 is provided on one side of the outer protective layer 2 near the intermediate cut-resistant layer 3. A fiber mesh body 301 is fixedly embedded on the outer surface of the intermediate cut-resistant layer 3, with ultrasonic welding points at the intersections of the fiber mesh body 301. The main body 1 serves as the core load-bearing structure, employing a multi-layer composite design that integrates protective, cut-resistant, and sealing functional layers to achieve a balance between lightweight and high strength. The specially designed anti-slip textures on the surface of the outer protective layer 2 significantly improve grip stability and prevent slippage during transportation. The inner side is secured to the intermediate cut-resistant layer 3 via the adhesive transition layer 6, preventing layer separation. The intermediate cut-resistant layer 3 is embedded with an aramid fiber mesh body 301, with ultrasonic welding points fixing the intersections to form a mesh-like stress-dispersing structure, effectively resisting knife cuts and sharp object impacts.

[0028] In this embodiment, as Figures 2-5 As shown; the inner layer 4 is provided on the side of the middle cut-resistant layer 3 away from the outer protective layer 2, and the hot melt adhesive 5 is provided on the side of the inner layer 4 close to the middle cut-resistant layer 3. The outer surface of the hot melt adhesive 5 is bonded to the outer surface of the middle cut-resistant layer 3. The outer surface of the inner layer 4 is provided with a corona treatment layer and a slip coating. The inner layer 4 is made of food-grade PE film and is hot-pressed to the middle cut-resistant layer 3 by the hot melt adhesive 5, which has both sealing and flexibility. The corona treatment layer improves the printing adhesion, and the slip coating ensures that the inner wall is smooth and easy to put and take out items. The hot melt adhesive 5 serves as an interlayer bonding medium. Its low-temperature activation characteristics prevent high-temperature damage to the fiber mesh, while ensuring that the bonding strength of each layer reaches more than 20 N / cm².

[0029] In this embodiment, as Figures 2-5As shown; a protective strip 7 is fixedly connected to the outer surface of the main body 1 of the packaging bag; a top heat-sealed edge 11 is provided at the opening of the main body 1 of the packaging bag; a folded edge reinforcing strip 9 is provided on the outer surface of the main body 1 of the packaging bag; an anti-counterfeiting label layer 8 is provided on the outer surface of the main body 1 of the packaging bag; a set of handles 10 is provided on the outer surface of each handle 10; a cut-resistant reinforcing strip 13 is provided at the internal seam of the main body 1 of the packaging bag; a cross support piece 12 is provided on the inner wall of the main body 1 of the packaging bag; the protective strip 7 and the cut-resistant reinforcing strip 13 are high-frequency heat-sealed polyester fiber strips along the seam to specifically reinforce the easily torn parts, thereby increasing the edge tensile strength by 50%; the top... The heat-sealed edge 11 uses a double heat-sealing process with a sealing width of 10mm, ensuring that the airtightness of the bag opening meets ISO standards. The reinforced edge 9 has a metal foil composite strip embedded at the bend of the bag body, and the pre-indentation design allows for more than 5,000 folds. The handle 10 is a nylon woven strap with a silicone protective pad, which can effectively distribute the lifting pressure up to 15kg and is comfortable to hold without hurting the hand. The bottom cross support plate 12 is an X-shaped cross PE board structure, which enables the bottom to bear a load of 30kg and has better deformation resistance than ordinary flat structures. The anti-counterfeiting label layer 8 integrates laser micro-texture and variable QR code technology to achieve one product, one code, traceability and anti-counterfeiting.

[0030] The working principle of this utility model is as follows:

[0031] The main body 1 of the packaging bag improves grip stability through the anti-slip texture of the outer protective layer 2. Its inner side is bonded to the middle cut-resistant layer 3 through the adhesive transition layer 6. The middle cut-resistant layer 3 disperses the impact force through the fiber mesh body 301 and ultrasonic welding points, and is then bonded to the inner layer 4 with hot melt adhesive 5. The corona treatment layer and slip coating of the inner layer 4 optimize the sealing performance and the smoothness of the inner wall. The bag opening is sealed by the top heat-sealing edge 11, the bottom is reinforced by the cross support piece 12, and the sides are reinforced by the folded edge reinforcement strip 9 and the cut-resistant reinforcement strip 13 to improve tear resistance. Finally, a multi-layer composite packaging bag that is cut-resistant, anti-slip, and durable is formed.

[0032] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A tear-resistant packaging bag, characterized in that: The packaging bag body (1) includes an outer protective layer (2), an inner anti-cut layer (3) is provided inside the outer protective layer (2), and an inner layer (4) is provided on the side of the inner anti-cut layer (3) away from the outer protective layer (2).

2. The tear-resistant packaging bag according to claim 1, characterized in that: The outer surface of the outer protective layer (2) is provided with anti-slip texture, and the side of the outer protective layer (2) near the middle anti-cut layer (3) is provided with an adhesive transition layer (6).

3. The tear-resistant packaging bag according to claim 1, characterized in that: The outer surface of the intermediate anti-cut layer (3) is fixedly inlaid with a fiber mesh body (301), and ultrasonic welding points are provided at the intersection nodes of the fiber mesh body (301).

4. The tear-resistant packaging bag according to claim 1, characterized in that: The inner layer (4) has a hot melt adhesive (5) on one side near the middle anti-cut layer (3). The outer surface of the hot melt adhesive (5) is attached to the outer surface of the middle anti-cut layer (3). The outer surface of the inner layer (4) has a corona treatment layer and a slip coating.

5. A tear-resistant packaging bag according to claim 1, characterized in that: The outer surface of the main body of the packaging bag (1) is fixedly connected with a protective strip (7), and the top heat-sealed edge (11) is provided at the bag opening of the main body of the packaging bag (1).

6. A tear-resistant packaging bag according to claim 1, characterized in that: The outer surface of the main body (1) of the packaging bag is provided with a folded edge reinforcement strip (9), and the outer surface of the main body (1) of the packaging bag is provided with an anti-counterfeiting label layer (8).

7. A tear-resistant packaging bag according to claim 1, characterized in that: The outer surface of the main body (1) of the packaging bag is provided with a set of handles (10), and each handle (10) is provided with a protective pad on its outer surface. The inner seam of the main body (1) of the packaging bag is provided with a cut-resistant reinforcing strip (13), and the inner wall of the main body (1) of the packaging bag is provided with a cross support piece (12).

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