Damp-proof compression-resistant environment-friendly paper bag

Abstract

The utility model is applicable to the technical field of packaging materials, and provides a moisture-proof compression-resistant environment-friendly paper bag which comprises a paper bag body, a sealing layer is arranged on the outer wall of the paper bag body, a waterproof layer is arranged on the outer wall of the sealing layer, a thin film layer is arranged on the outer wall of the waterproof layer, and a plurality of first limiting shell plates which are evenly distributed are fixedly connected to the inner wall of the paper bag body. Every two first limiting shell plates form a group, the two first limiting shell plates in the same group are symmetrical, lifting ropes are arranged on the inner walls of the first limiting shell plates in the same group, the two ends of each lifting rope stretch out of the corresponding first limiting shell plate, handle buckles are fixedly connected to the upper ends of the lifting ropes on the same side, and a bearing paperboard is further arranged in the paper bag body. And the bearing paperboard is placed on the upper side of the bottom of the lifting rope. The moisture-proof, compression-resistant and durable performance of the paper bag can be remarkably improved, and meanwhile the practicability of the paper bag and the protection performance on internal objects are improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging materials technology, and in particular to a moisture-proof, pressure-resistant, and environmentally friendly paper bag. Background Technology

[0002] Eco-friendly paper bags, as opposed to plastic bags, refer to any bag whose material contains at least some paper. Paper bags are inexpensive, easily biodegradable, and made from trees and other plants. The process involves only a few steps: logging, papermaking, and molding. This results in significantly less pollution compared to the chemical synthesis process of plastic bags (from oil and natural gas to polypropylene (PP) plastic). Paper bags are biodegradable, while plastic bags are not; and the raw material for paper bags is trees, a renewable resource.

[0003] Existing eco-friendly paper bags are prone to moisture absorption in humid environments, which can affect the preservation of the contents; when carrying heavy loads, the paper bags are not strong enough to withstand pressure and are easily damaged.

[0004] Therefore, in view of the above situation, there is an urgent need to develop a moisture-proof, pressure-resistant, and environmentally friendly paper bag to overcome the shortcomings in current practical applications. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide a moisture-proof, pressure-resistant, and environmentally friendly paper bag, aiming to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A moisture-proof and pressure-resistant environmentally friendly paper bag includes a paper bag body. The outer wall of the paper bag body is provided with a sealing layer, the outer wall of the sealing layer is provided with a waterproof layer, and the outer wall of the waterproof layer is provided with a thin film layer. Multiple evenly distributed first limiting shell plates are fixedly connected to the inner wall of the paper bag body. Every two first limiting shell plates form a group, and the two first limiting shell plates in the same group are symmetrical. Each first limiting shell plate in the same group is provided with a lifting rope on its inner wall, and both ends of the lifting rope extend out of the first limiting shell plate. A handle buckle is fixedly connected to the upper end of the lifting rope on the same side. A receiving cardboard is also provided inside the paper bag body, and the receiving cardboard is placed on the upper side of the bottom of the lifting rope.

[0008] A further technical solution involves fixing multiple evenly distributed second limiting shell plates to the bottom end face of the receiving cardboard, with each second limiting shell plate corresponding to a first limiting shell plate, and the lifting rope slidingly connected to the inner wall of the corresponding second limiting shell plate.

[0009] A further technical solution is to use heat-sealing adhesive or polyurethane coating for the sealing layer.

[0010] Further technical solutions include using waterproof wax, waterproof coating, or waterproof membrane for the waterproof layer.

[0011] A further technical solution involves using polyethylene film as the film layer.

[0012] In a further technical solution, a thin film layer is also provided on the inner wall of the paper bag.

[0013] In summary, the embodiments of this utility model have the following beneficial effects compared with the prior art:

[0014] 1. Through the ingenious combination of the first limiting shell plate, lifting rope, receiving cardboard, and second limiting shell plate, as well as the reasonable selection of materials such as sealing layer, waterproof layer, and film layer, this paper bag has achieved significant improvements in moisture resistance, pressure resistance, and durability.

[0015] 2. The thin film layer on the inner wall of the paper bag further improves the practicality of the paper bag and its protective performance for the contents.

[0016] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This utility model Figure 1 Enlarged 3D structural diagram at point A;

[0019] Figure 3 This is a three-dimensional structural diagram of the internal structure of the paper bag body of this utility model;

[0020] Figure 4 This utility model Figure 3 A schematic diagram of the three-dimensional structure from another perspective.

[0021] In the diagram: 1. Paper bag body; 2. Sealing layer; 3. Waterproof layer; 4. Film layer; 5. First limiting shell plate; 6. Lifting rope; 7. Handle buckle; 8. Receiving cardboard; 9. Second limiting shell plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0023] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0024] Example 1

[0025] like Figure 1-4 As shown, this utility model embodiment provides a moisture-proof, pressure-resistant, and environmentally friendly paper bag, including a paper bag body 1. The outer wall of the paper bag body 1 is provided with a sealing layer 2, which enhances the overall structural strength by cooperating with the paper bag body 1. The outer wall of the sealing layer 2 is provided with a waterproof layer 3, which increases the water resistance of the paper bag body 1, making it more suitable for humid environments or occasions requiring long-term storage. The outer wall of the waterproof layer 3 is provided with a thin film layer 4, which further enhances the waterproof performance. Multiple evenly distributed first limiting shell plates 5 are fixedly connected to the inner wall of the paper bag body 1. Every two first limiting shell plates 5 form a group, and the two first limiting shell plates 5 in the same group are symmetrical. Each first limiting shell plate 5 in the same group is provided with a lifting rope 6, and both ends of the lifting rope 6 extend out of the first limiting shell plate 5. A handle buckle 7 is fixedly connected to the upper end of the lifting rope 6 on the same side. The paper bag is lifted by the cooperation of two handle buckles 7. The paper bag body 1 is also provided with a receiving cardboard 8, which is placed on the upper side of the bottom of the lifting rope 6.

[0026] Furthermore, multiple evenly distributed second limiting shell plates 9 are fixedly connected to the bottom end face of the receiving cardboard 8, and the second limiting shell plates 9 correspond one-to-one with the first limiting shell plates 5, and the lifting rope 6 is slidably connected to the inner wall of the corresponding second limiting shell plate 9.

[0027] Understandably, the cardboard 8 is used to support the items and is slidably connected to the lifting rope 6 through the second limiting shell plate 9, so that the force can be distributed more evenly when the paper bag is lifted, preventing the items from being damaged due to uneven force. This design reflects the effective use of the internal space of the paper bag and the protection of the items.

[0028] Furthermore, the sealing layer 2 is made of heat-sealing adhesive or polyurethane coating. Heat-sealing adhesive is a sealing material that softens and adheres to the outer wall of the paper bag body 1 by heating, forming a tight barrier. Polyurethane coating can provide additional strength and abrasion resistance, while also having a certain degree of moisture resistance. The waterproof layer 3 is made of waterproof wax, waterproof coating, or waterproof membrane. Waterproof wax is a traditional waterproof material that can be applied to the outer wall of the paper bag by dipping or spraying. Waterproof coating is a more modern waterproof material that can provide better waterproof performance and more durable protection. Waterproof coating can be selected with different formulations and colors to meet different needs. The waterproof membrane can be made of polyester film or polyvinyl chloride film. The film layer 4 is made of polyethylene film. Polyethylene film has good moisture resistance and barrier properties, which can effectively isolate external moisture and prevent the internal items from getting damp.

[0029] Example 2

[0030] The difference between this embodiment and the paper bag body 1 in the embodiment is that the inner wall of the paper bag body 1 is also provided with a thin film layer 4, which serves as an additional protective barrier to prevent damage to the internal items due to friction, collision, or other reasons during transportation or storage. This increases the smoothness and strength of the inner wall of the paper bag body 1, making it more durable and less prone to breakage.

[0031] Specifically, through the ingenious combination of structures such as the first limiting shell plate 5, lifting rope 6, receiving cardboard 8, and second limiting shell plate 9, and the rational selection of materials such as the sealing layer 2, waterproof layer 3, and film layer 4, this paper bag achieves significant improvements in moisture resistance, pressure resistance, and durability. The paper bag body 1, as the basic structure of the paper bag, bears all other components and items. The sealing layer 2 uses high-quality materials such as heat-sealing adhesive or polyurethane coating, tightly adhering to the outer wall of the paper bag body 1, effectively enhancing the sealing performance of the paper bag, preventing external moisture and air from penetrating, and improving moisture resistance. The waterproof layer 3 uses waterproof... Highly effective waterproof materials such as wax, waterproof coatings, or waterproof membranes further enhance the water resistance of the paper bag, enabling it to keep the contents dry in humid environments or during long-term storage. The film layer 4, as an additional protective barrier, uses high-quality materials such as polyethylene film to enhance the paper bag's moisture resistance and barrier properties, effectively isolating external moisture and pollution and protecting the contents from damage. The first limiting shell plate 5 is evenly distributed on the inner wall of the paper bag, providing stable support and mounting points for the lifting rope 6, while also enhancing the overall structural strength of the paper bag. The lifting rope 6 extends from the second limiting shell plate 9, making it easy for users to lift the paper bag. Its reasonable design allows it to withstand a certain weight, ensuring the stability of the paper bag during transportation and storage. The handle buckle 7 is fixedly connected to the upper end of the lifting rope 6, making it convenient for users to grip and lift the paper bag, improving its usability. The supporting cardboard 8 is placed on the upper side of the bottom of the lifting rope 6 to support and separate the items, preventing them from being squeezed and damaged inside the paper bag. Meanwhile, the second limiting shell plate 9 is slidably connected to the lifting rope 6, which realizes the uniform distribution of force when lifting the paper bag. The second limiting shell plate 9 corresponds one-to-one with the first limiting shell plate 5, providing additional support and guidance for the lifting rope 6, ensuring that the lifting rope 6 remains stable and smooth during sliding. The thin film layer on the inner wall of the paper bag body 1 further improves the practicality of the paper bag and its protective performance for the contents.

[0032] The working principle of this utility model is as follows: After placing the item inside the paper bag body 1, lift the two handle buckles 7, and then the two handle buckles 7 drive the lifting rope 6 to slide along the inner wall of the first limiting shell plate 5. Then, the bottom of the lifting rope 6 applies an upward force to the receiving cardboard 8 through the second limiting shell plate 9, and then applies an upward force to the object inside the paper bag body 1 through the receiving cardboard 8, thereby lifting the object.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 moisture-proof, pressure-resistant, and environmentally friendly paper bag, comprising a paper bag body (1), characterized in that, The outer wall of the paper bag body (1) is provided with a sealing layer (2), the outer wall of the sealing layer (2) is provided with a waterproof layer (3), the outer wall of the waterproof layer (3) is provided with a thin film layer (4), the inner wall of the paper bag body (1) is fixedly connected with a plurality of evenly distributed first limiting shell plates (5), each pair of first limiting shell plates (5) is a group, the two first limiting shell plates (5) in the same group are symmetrical, the inner wall of the first limiting shell plates (5) in the same group is provided with a lifting rope (6), and both ends of the lifting rope (6) extend out of the first limiting shell plate (5), the upper end of the lifting rope (6) on the same side is fixedly connected with a handle buckle (7), the paper bag body (1) is also provided with a receiving cardboard (8), and the receiving cardboard (8) is placed on the upper side of the bottom of the lifting rope (6).

2. The moisture-proof, pressure-resistant, and environmentally friendly paper bag according to claim 1, characterized in that, The bottom end face of the receiving cardboard (8) is fixedly connected with multiple evenly distributed second limiting shell plates (9), and the second limiting shell plates (9) correspond one-to-one with the first limiting shell plates (5). The lifting rope (6) is slidably connected to the inner wall of the corresponding second limiting shell plate (9).

3. The moisture-proof, pressure-resistant, and environmentally friendly paper bag according to claim 1, characterized in that, The sealing layer (2) is selected from heat-sealing adhesive or polyurethane coating.

4. The moisture-proof, pressure-resistant, and environmentally friendly paper bag according to claim 1, characterized in that, Waterproof layer (3) can be made of waterproof wax, waterproof coating or waterproof membrane.

5. The moisture-proof, pressure-resistant, and environmentally friendly paper bag according to claim 1, characterized in that, The thin film layer (4) is made of polyethylene film.

6. The moisture-proof, pressure-resistant, and environmentally friendly paper bag according to claim 1, characterized in that, The inner wall of the paper bag body (1) is also provided with a thin film layer (4).

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