A reusable, structurally sound bag

Abstract

The utility model discloses a kind of reusable structure firm packaging bag, including bag body, the bag body top is fixedly connected with connecting cover, the outside of bag body is fixedly connected with connecting band, the outer surface of bag body, the outside of connecting cover and the surface of connecting band are all provided with first functional layer, and the first functional layer includes polypropylene wear-resistant woven cloth layer and polyvinyl butyral reinforced cloth layer.The utility model can resist external friction and hard object scratch by first functional layer, avoid bag body external damage, can also disperse stress and prevent tearing, guarantee external structure stability;Second functional layer can resist internal hard object scratch, can also bear loading tension and prevent deformation, double functional layer improves packaging bag durability, meets the repeated use requirement magnetic block and iron block's magnetic adsorption structure, can accurately align fixed connecting cover, prevent connecting cover displacement and internal article drop, cooperate with connecting band to enhance carrying convenience.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag technology, specifically a reusable and structurally robust packaging bag. Background Technology

[0002] With the deepening of environmental protection concepts and the increasing demand for resource conservation, reusable packaging bags are gradually replacing disposable packaging and are widely used in non-food storage scenarios such as storing daily necessities, carrying outdoor equipment, and storing tools and parts. In these scenarios, the packaging bags need to frequently come into contact with hard objects (such as metal tools, plastic parts, outdoor equipment, etc.) and need to repeatedly withstand the tension and friction during loading and transportation. Therefore, "long-term durability" has become a core usage requirement.

[0003] However, current reusable packaging bags on the market are significantly lacking in durability and are difficult to adapt to the needs of non-food storage scenarios: most packaging bags are made of a single canvas, ordinary nylon cloth, or single-layer polypropylene material, without a dedicated protective structure designed for external friction and contact with sharp objects inside. When carrying tools or parts, the exterior is easily damaged by friction with the ground or tabletop, resulting in surface fraying and breakage; the interior is easily scratched by the sharp edges of hard objects, forming holes, making the packaging bag easily damaged. Therefore, we propose a reusable packaging bag with a robust structure. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a reusable and structurally robust packaging bag. This bag possesses the advantages of being reusable and robust, solving the problem that current reusable packaging bags on the market suffer from significant durability deficiencies and are unsuitable for non-food storage scenarios. Most packaging bags are made of single canvas, ordinary nylon cloth, or single-layer polypropylene material, lacking a dedicated protective structure designed for external friction and contact with sharp internal objects. When carrying tools or parts, the exterior is prone to surface fraying and damage due to friction with the ground or tabletop; the interior is easily scratched by the sharp edges of hard objects, forming holes and causing the packaging bag to be easily damaged.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a reusable and structurally robust packaging bag, comprising a bag body, a connecting cap fixedly connected to the top of the bag body, a connecting strap fixedly connected to the outer side of the bag body, a first functional layer provided on the outer surface of the bag body, the outer side of the connecting cap, and the surface of the connecting strap, the first functional layer comprising a polypropylene wear-resistant woven fabric layer and a polyvinyl butyral reinforced fabric layer, and a second functional layer provided on the inner surface of the bag body and the inner side of the connecting cap, the second functional layer comprising a polyvinyl alcohol composite insulation fabric layer and a polypropylene high-strength woven fabric layer.

[0006] Preferably, a magnetic block is fixedly connected to the top of the front of the bag body, and an iron block is fixedly connected to one side of the connecting cover.

[0007] Preferably, the polyvinyl alcohol composite insulation fabric layer is fixedly connected to the inner surface of the bag body and the inner side of the connecting cover, and the polypropylene high-strength woven fabric layer is fixedly connected to one side of the polyvinyl alcohol composite insulation fabric layer.

[0008] Preferably, the polypropylene abrasion-resistant woven fabric layer is fixedly connected to the outer surface of the bag body, the outer side of the connecting cover, and the surface of the connecting strap, respectively, and the polyvinyl butyral reinforced fabric layer is fixedly connected to one side of the polypropylene abrasion-resistant woven fabric layer.

[0009] Preferably, the polypropylene wear-resistant woven fabric layer and the polyvinyl butyral reinforced fabric layer have the same thickness, and the polyvinyl alcohol composite insulation fabric layer and the polypropylene high-strength woven fabric layer have the same thickness.

[0010] Preferably, a groove is provided on one side of the iron block, and the groove is adapted to the magnetic block.

[0011] Compared with the prior art, this utility model provides a reusable and structurally robust packaging bag, which has the following beneficial effects: 1. The first functional layer of this utility model is composed of a polypropylene wear-resistant woven fabric layer and a polyvinyl butyral reinforced fabric layer, covering the outer surface of the bag, the outer side of the connecting cap, and the surface of the connecting strap, forming double external protection: the polypropylene wear-resistant woven fabric layer, as the outer layer, directly contacts the outside environment. Its dense woven structure and high surface hardness can resist ground friction and scratches from hard objects, preventing the bag from pilling or breaking, and ensuring the appearance and structural integrity of the packaging bag after long-term repeated use; the polyvinyl butyral reinforced fabric layer is bonded to the inner side of the polypropylene wear-resistant woven fabric layer. Its material has high tensile strength, which can distribute external forces and prevent the first functional layer from tearing due to excessive local stress. The first layer prevents cracking and enhances the structural uniformity of the bag body, connecting cap, and connecting strap, preventing delamination. The second functional layer is composed of a polyvinyl alcohol composite insulation fabric layer and a polypropylene high-strength woven fabric layer, covering the inner surface of the bag body and the inner side of the connecting cap. The polypropylene high-strength woven fabric layer, as the inner layer, directly contacts the internal items. Its high-strength woven structure can resist scratches from hard object edges, preventing holes from appearing on the inner wall of the bag. It also has excellent tensile strength, which can withstand the tensile force of the bag body when loaded with heavy objects, preventing bag deformation and seam cracking. The polyvinyl alcohol composite insulation fabric layer is bonded between the polypropylene high-strength woven fabric layer and the bag body substrate. Its flexibility can adapt to the bending and deformation of the bag body.

[0012] 2. The magnetic block fixed to the top of the front of the bag body and the iron block fixed to one side of the connecting cover form a magnetic adsorption structure: During use, the connecting cover is closed on the top of the bag body, and the magnetic block and the iron block are magnetically adsorbed and attached. The groove design can ensure that the two are accurately aligned and avoid the connecting cover from shifting. At the same time, the magnetic adsorption force can tightly adhere to the edge of the connecting cover and the bag body to prevent the internal items from falling out. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the first functional layer structure of this utility model; Figure 3 This is a cross-sectional view of the first functional layer of this utility model; Figure 4 This is a cross-sectional view of the second functional layer of this utility model.

[0014] In the diagram: 1. Bag body; 2. Connecting cap; 3. Magnetic block; 4. Iron block; 5. Connecting strap; 6. First functional layer; 61. Polypropylene wear-resistant woven fabric layer; 62. Polyvinyl butyral reinforced fabric layer; 7. Second functional layer; 71. Polyvinyl alcohol composite insulation fabric layer; 72. Polypropylene high-strength woven fabric layer. Detailed Implementation

[0015] 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.

[0016] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0017] Example 1: Please see Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this utility model provides a reusable and structurally robust packaging bag, including a bag body 1, a connecting cap 2 fixedly connected to the top of the bag body 1, and a connecting strap 5 fixedly connected to the outer side of the bag body 1. A first functional layer 6 is provided on the outer surface of the bag body 1, the outer side of the connecting cap 2, and the surface of the connecting strap 5. The first functional layer 6 includes a polypropylene abrasion-resistant woven fabric layer 61 and a polyvinyl butyral reinforced fabric layer 62. A second functional layer 7 is provided on the inner surface of the bag body 1 and the inner side of the connecting cap 2. The second functional layer 7 includes a polyvinyl alcohol composite insulation fabric layer 71 and a polypropylene high-strength woven fabric layer 72. The thermal insulation fabric layer 71 is fixedly connected to the inner surface of the bag body 1 and the inner side of the connecting cover 2, respectively. The polypropylene high-strength woven fabric layer 72 is fixedly connected to one side of the polyvinyl alcohol composite thermal insulation fabric layer 71. The polypropylene wear-resistant woven fabric layer 61 is fixedly connected to the outer surface of the bag body 1, the outer side of the connecting cover 2 and the surface of the connecting strap 5, respectively. The polyvinyl alcohol butyral reinforced fabric layer 62 is fixedly connected to one side of the polypropylene wear-resistant woven fabric layer 61. The polypropylene wear-resistant woven fabric layer 61 and the polyvinyl alcohol butyral reinforced fabric layer 62 have the same thickness. The polyvinyl alcohol composite thermal insulation fabric layer 71 and the polypropylene high-strength woven fabric layer 72 have the same thickness.

[0018] The specific function of this technical solution is as follows: The first functional layer 6 is composed of a polypropylene wear-resistant woven fabric layer 61 and a polyvinyl butyral reinforced fabric layer 62, covering the outer surface of the bag body 1, the outer side of the connecting cover 2, and the surface of the connecting strap 5, forming double external protection: The polypropylene wear-resistant woven fabric layer 61, as the outer layer, directly contacts the outside environment. Its dense woven structure and high surface hardness can resist ground friction and scratches from hard objects, preventing the outer surface of the bag body 1 from becoming frayed or damaged, and ensuring the appearance and structural integrity of the packaging bag after long-term repeated use; The polyvinyl butyral reinforced fabric layer 62 is attached to the inner side of the polypropylene wear-resistant woven fabric layer 61. Its material has high tensile strength, which can distribute external forces and prevent the first functional layer 6 from tearing due to excessive local stress. The second functional layer 7 is composed of a polyvinyl alcohol composite insulation fabric layer 71 and a polypropylene high-strength woven fabric layer 72, which covers the inner surface of the bag body 1 and the inner side of the connecting cover 2. The polypropylene high-strength woven fabric layer 72, as the inner layer, directly contacts the internal items. Its high-strength woven structure can resist the scratches of hard objects and prevent holes from appearing on the inner wall of the bag body 1. At the same time, it has excellent tensile strength and can withstand the tensile force of the bag body 1 when loaded with heavy objects, preventing the bag body from deforming and the seams from cracking. The polyvinyl alcohol composite insulation fabric layer 71 is bonded between the polypropylene high-strength woven fabric layer 72 and the base material of the bag body 1. Its flexibility can adapt to the bending and deformation of the bag body 1.

[0019] Example 2: Based on Embodiment 1, this utility model is as follows: Figure 1As shown, a magnetic block 3 is fixedly connected to the top of the front of the bag body 1, and an iron block 4 is fixedly connected to one side of the connecting cover 2. A groove is provided on one side of the iron block 4, and the groove is adapted to the magnetic block 3.

[0020] The specific function of this technical solution is as follows: The magnetic block 3 fixed on the top front of the bag body 1 and the iron block 4 fixed on one side of the connecting cover 2 form a magnetic adsorption structure. During use, the connecting cover 2 is closed on the top of the bag body 1, and the magnetic block 3 and the iron block 4 are magnetically adsorbed and attached. The groove design can ensure that the two are accurately aligned and prevent the connecting cover 2 from shifting. At the same time, the magnetic adsorption force can tightly adhere to the edge of the connecting cover 2 and the bag body 1 to prevent the internal items from falling out.

[0021] Working principle: The first functional layer 6 is composed of a polypropylene abrasion-resistant woven fabric layer 61 and a polyvinyl butyral reinforced fabric layer 62, covering the outer surface of the bag body 1, the outer side of the connecting cap 2, and the surface of the connecting strap 5, forming double external protection: The polypropylene abrasion-resistant woven fabric layer 61, as the outer layer, directly contacts the outside environment. Its dense woven structure and high surface hardness can resist ground friction and scratches from hard objects, preventing the outer surface of the bag body 1 from becoming fuzzy or damaged, and ensuring the appearance and structural integrity of the packaging bag after long-term repeated use; The polyvinyl butyral reinforced fabric layer 62 is bonded to the inner side of the polypropylene abrasion-resistant woven fabric layer 61. Its material has high tensile strength, which can distribute external forces and prevent the first functional layer 6 from tearing due to excessive local stress. To enhance the structural uniformity of the bag body 1, connecting cover 2, and connecting strap 5 and prevent delamination, the second functional layer 7 is composed of a polyvinyl alcohol composite insulation fabric layer 71 and a polypropylene high-strength woven fabric layer 72, covering the inner surface of the bag body 1 and the inner side of the connecting cover 2. The polypropylene high-strength woven fabric layer 72, as the inner layer, directly contacts the internal items. Its high-strength woven structure can resist scratches from hard object edges, preventing holes from appearing on the inner wall of the bag body 1. At the same time, it has excellent tensile strength and can withstand the tensile force of the bag body 1 when loaded with heavy objects, preventing bag deformation and seam cracking. The polyvinyl alcohol composite insulation fabric layer 71 is bonded between the polypropylene high-strength woven fabric layer 72 and the base material of the bag body 1. Its flexibility can adapt to the bending and deformation of the bag body 1. The magnetic block 3 fixed to the top front of the bag body 1 and the iron block 4 fixed to one side of the connecting cover 2 form a magnetic adsorption structure: During use, the connecting cover 2 is closed on the top of the bag body 1, and the magnetic block 3 and the iron block 4 are magnetically adsorbed and attached. The groove design can ensure that the two are precisely aligned and prevent the connecting cover 2 from shifting. At the same time, the magnetic adsorption force can tightly adhere to the edge of the connecting cover 2 and the bag body 1 to prevent the internal items from falling out.

[0022] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0023] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A reusable, structurally robust packaging bag, comprising a bag body (1), characterized in that: The top of the bag body (1) is fixedly connected to a connecting cover (2), and the outside of the bag body (1) is fixedly connected to a connecting strap (5). The outer surface of the bag body (1), the outside of the connecting cover (2) and the surface of the connecting strap (5) are all provided with a first functional layer (6). The first functional layer (6) includes a polypropylene wear-resistant woven fabric layer (61) and a polyvinyl butyral reinforced fabric layer (62). The inner surface of the bag body (1) and the inner side of the connecting cover (2) are all provided with a second functional layer (7). The second functional layer (7) includes a polyvinyl alcohol composite insulation fabric layer (71) and a polypropylene high-strength woven fabric layer (72).

2. The reusable and structurally robust packaging bag according to claim 1, characterized in that: A magnetic block (3) is fixedly connected to the top of the front of the bag (1), and an iron block (4) is fixedly connected to one side of the connecting cover (2).

3. A reusable, structurally robust packaging bag according to claim 1, characterized in that: The polyvinyl alcohol composite insulation fabric layer (71) is fixedly connected to the inner surface of the bag body (1) and the inner side of the connecting cover (2), respectively, and the polypropylene high-strength woven fabric layer (72) is fixedly connected to one side of the polyvinyl alcohol composite insulation fabric layer (71).

4. A reusable, structurally robust packaging bag according to claim 1, characterized in that: The polypropylene abrasion-resistant woven fabric layer (61) is fixedly connected to the outer surface of the bag body (1), the outer side of the connecting cover (2) and the surface of the connecting strap (5), respectively, and the polyvinyl butyral reinforced fabric layer (62) is fixedly connected to one side of the polypropylene abrasion-resistant woven fabric layer (61).

5. A reusable, structurally robust packaging bag according to claim 1, characterized in that: The polypropylene wear-resistant woven fabric layer (61) and the polyvinyl butyral reinforced fabric layer (62) have the same thickness, and the polyvinyl alcohol composite insulation fabric layer (71) and the polypropylene high-strength woven fabric layer (72) have the same thickness.

6. A reusable, structurally robust packaging bag according to claim 2, characterized in that: The iron block (4) has a groove on one side, and the groove is adapted to the magnetic block (3).

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